Fiche individuelle
Abdelmounaïm TOUNZI  
Titre  PR  
Equipe  Outils et Méthodes Numériques  
Adresse  L2EP Bâtiment ESPRIT Avenue Henri Poincaré 59650 Villeneuve d'Ascq  
Téléphone  +33 (0)3 622 68 231  
abdelmounaim.tounzi@univlille.fr  
Publications 
ACLI Revue internationale avec comité de lecture 

[1] Enhancing Magnetoelastic Coupling in Shear Surface Acoustic Waveguide Based on STCut Quartz Substrate and Ni Thin Films With Uniaxial Magnetic Anisotropy Induced by Thermal Annealing IEEE Sensors Letters, Vol. 7, N°. 12, 12/2023, URL MARBOUH Othmane, MAZZAMURRO Aurélien, BOU MATAR Olivier, TIERCELIN Nicolas, DUSCH Yannick, LALOY Daniel, ETTIHIR Khalid, TOUNZI Abdelmounaïm, BENABOU Abdelkader, TALBI Karim 
[2] Load cell based on binocular test body and SAW strain sensor with a RadioFrequency Reflectometry ReadOut System. IEEE Sensors Journal, 11/2023, URL MARBOUH Othmane, BOUSSATOUR GHIZLANE, DUSCH Yannick, MAZZAMURRO Aurélien, LALOY Daniel, ETTIHIR Khalid, MAURICE Vincent, BOU MATAR Olivier, VIARD Romain, TOUNZI Abdelmounaïm, BENABOU Abdelkader, TALBI Karim 
[3] Effect of crosssaturation on the performance of synchronous reluctance machine operating as autonomous generator IEEE Transactions on Magnetics, 10/2023 DJOUADI Yamina, TOUNZI Abdelmounaïm, IDJDARENE Kassa 
[4] Detection of incipient faults in ninephase machines: impact of the star winding configuration Mathematics and Computers in Simulation Mathematics and Computers in Simulation, 07/2023, URL, Abstract EL HAJJ Anthony, SEMAIL Eric, TOUNZI Abdelmounaïm, VIZIREANU Darius, CHEAYTANI Jalal 
Two approaches are commonly used for modelling and control of ninephase (triple star) faulttolerant machines with symmetrical and asymmetrical star winding configurations: The Vector Space Decomposition (VSD) and the decentralized dq modelling. In this paper, it will be shown how the VSD approach used for machines with an Asymmetrical Star Winding Configuration (ASWC), unlike the decentralized dq one used for machines with a Symmetrical Star Winding Configuration (SSWC), can be helpful for nonintrusive Fault Detection and Diagnosis (FDD) purposes. Supporting MATLAB/Simulink simulations are discussed. 
[5] Design of QuasiHalbach permanent magnet Vernier machine for direct drive urban vehicle application Machines, Vol. 11, N°. 2, 02/2023, URL GUENDOUZ Walid, TOUNZI Abdelmounaïm, REKIOUA Toufik 
[6] Analysis of magnetic properties degradation following industrial impregnation process of electrical steel laminations Journal of Magnetism and Magnetic Materials (JMMM), Vol. 563, pages. 170008, 12/2022, URL, Abstract HELBLING Hugo, VAN GORP Adrien, BENABOU Abdelkader, TOUNZI Abdelmounaïm, BOUGHANMI Walid, LALOY Daniel 
This paper deals with the analysis of the magnetic properties degradation following an industrial impregnation process of electrical steels employed in stators of large generators. First, the impregnation process is studied directly on industrial stators to emphasize the significance of the process effect. Then, to have a controlled approach of the impregnation conditions, laminated ring cores were subjected to the same process but for different configurations. The ring cores were magnetically characterized to highlight the influence of the resin on the magnetic properties. Also, in order to distinguish the effect of the resin from potential other phenomena during the curing phase (i.e. the ageing effect), an experimental protocol is proposed: the results allow to emphasize the impact of such process on the magnetic properties. 
[7] Investigation of the compaction process of electrical machines magnetic circuits and its detrimental effect on magnetic performances Scientific Reports, Vol. 12, pages. 18983, 11/2022, URL, Abstract HELBLING Hugo, VAN GORP Adrien, BENABOU Abdelkader, COOREVITS Thierry, TOUNZI Abdelmounaïm, BOUGHANMI Walid, LALOY Daniel 
The manufacturing processes of electrical machines may lead to significant degradation of the magnetic properties of their magnetic core (stator, rotor) performances and, as a consequence, to a decrease of their energy efficiency. While the effects of some processes (cutting, welding …) are widely discussed in the literature, this is not the case with the compaction process although it is systematically used to maintain the assembly of electrical steel sheets that compose the magnetic circuits. In addition to the conventional one, a specific compaction process exists for highpower electrical machines. After an introduction, the paper firstly deals with the two studied processes (conventional, specific). Then, an experimental mockup to study the impact of the two configurations on the magnetic properties (iron losses, normal magnetization curve) is presented. This mockup is the first, in the literature, that allows to study the effect of a controlled compaction mechanical stress on magnetic properties. Obtained results in both configurations highlight a magnetomechanical effect that is not reported in the literature where these effects are commonly considered following inplane mechanical stresses. This paper presents a magnetomechanical model, taking into account the compaction stress effect, as well as a modelling protocol to model the effect of 3D mechanical stress on magnetic properties, which has never been done in the literature. 
[8] Study of the Influence of the Armature Number of Phases on the Electromagnetic Torque Quality in PM Vernier VRM Electric Power Components and Systems, Vol. 49, N°. 45, pages. 395406, 10/2021, URL SENNI Nabil, TAÏBI Soufiane, TOUNZI Abdelmounaïm 
[9] Effect of Industrial Impregnation Process on the Magnetic Properties of Electrical Steels Journal of Magnetism and Magnetic Materials (JMMM), Vol. 531, 08/2021, URL, Abstract HELBLING Hugo, BENABOU Abdelkader, VAN GORP Adrien, TOUNZI Abdelmounaïm, EL YOUSSEF Mohamad, BOUGHANMI Walid, LALOY Daniel 
This paper deals with the experimental investigation of the effect of impregnation process on the normal magnetization curve and iron losses of electrical steels. To address this issue, several laminated toroidal magnetic circuits have been designed to characterize the magnetic properties with the flux metric method. The first configuration considers magnetic circuits wrapped with adhesive tape so that the dielectric resin will be deposited only on the outer surface of the magnetic circuit. In the second configuration, the magnetic circuits are unwrapped, which will allow the resin to diffuse within the interlaminar spaces of the magnetic circuit. The obtained experimental results show significant effects on the magnetic properties in both cases. However, depending on the considered configuration, the resin diffusion also has an influence on the changes in magnetic properties. 
[10] Detection of magnetization loss in a PMSM with Hilbert Huang transform applied to noninvasive search coil voltage Mathematics and Computers in Simulation, Vol. 184, 06/2021, URL, Abstract ZHANG Jian, TOUNZI Abdelmounaïm, BENABOU Abdelkader, LE MENACH Yvonnick 
This paper presents a novel method for demagnetization fault detection in permanent magnet synchronous machine (PMSM). Demagnetization fault is a common problem existing in PMSM which deteriorates the machine performance and can lead to serious subsequential machine damages. Unlike the most popular method based on the analysis of the machine currents for detecting this type of fault, the approach proposed in this paper analyzes the voltage signal of a noninvasive search coil by means of Hilbert Huang transform. Simulations are carried out with a two dimensional finite element analysis (FEA) for different demagnetization levels to test the capability of the proposed method to detect PM demagnetization faults. 
[11] Influence of the load angle on magnetic radial forces and torque ripple of a low power permanent magnet synchronous machine Mathematics and Computers in Simulation, Vol. 184, pages. 153164, 06/2021, URL, Abstract UYGUN Emre, HECQUET Michel, TOUNZI Abdelmounaïm, DEPERNET Daniel, LANFRANCHI Vincent, BRUNO Serge, TOLLANCE Thierry 
This paper shows the influence of the shift phase angle ψ between phase currents and backelectromotive forces on magnetic radial forces and torque ripple for a specific low power permanent magnet synchronous machine. This influence is firstly demonstrated through analytical development considering only the first harmonic values. Then, magnetic pressure harmonics versus space and frequency as well as torque ripple are evaluated on the studied motor for different angles using finite element approach. The aim is to establish a good compromise between consumed current, torque and radial force harmonics at the origin of the electromagnetic noise. Experimental measurements with a sensorless fieldoriented control are detailed. 
[12] Efficient Approach Based on Equivalent Electric Circuit Model to Determine Rotor Bar Currents of Squirrel Cage Induction Machines IEEE Transactions on Magnetics, 02/2021 MARAULT Jérôme, TOUNZI Abdelmounaïm, GILLON Frédéric, HECQUET Michel 
[13] Performance analysis of a selfexcited induction generator mathematical dynamic model with magnetic saturation, cross saturation effect and iron losses Mathematical Modelling of Engineering Problems, Vol. 7, N°. 4, pages. 527538, 12/2020 ABERBOUR A., IDJDARENE Kassa, TOUNZI Abdelmounaïm 
[14] Modelling and identification of switched reluctance machine inductance Australian Journal of Electrical and Electronics Engineering, 12/2020, URL BROURI Adil, KADI Laila, TOUNZI Abdelmounaïm, OUANNOU Abdelmalek, BOUCHNAIF Jamal 
[15] Performance comparison of axialflux switched reluctance machines with nonoriented and grainoriented electrical steel rotors Open Physics, Vol. 18, N°. 1, 12/2020 AYDOUN Racha, PARENT Guillaume, TOUNZI Abdelmounaïm, LECOINTE JeanPhilippe 
[16] Use of current sheet coupled to an analytical tool to analyze by FEM the harmonic content of armature winding distributions The International Journal for Computation and Mathematics in Electrical and Electronic Engineering (COMPEL), 11/2020 MARAULT Jérôme, TOUNZI Abdelmounaïm, GILLON Frédéric, HECQUET Michel 
[17] Impact of the load angle on magnetic radial pressure and torque ripple of a low power PMSM with trapezoidal control The International Journal for Computation and Mathematics in Electrical and Electronic Engineering (COMPEL), Vol. 39, N°. 5, pages. 12551270, 11/2020, URL, Abstract UYGUN Emre, HECQUET Michel, TOUNZI Abdelmounaïm, DEPERNET Daniel, LANFRANCHI Vincent, BRUNO Serge, TOLLANCE Thierry 
Purpose
This paper deals with the study of the influence of the phase shift between currents and backelectromotive forces (backEMF) on torque ripple and radial magnetic forces for a low power synchronous machine supplied with 120 degrees squarewave currents. This paper aims to establish a good compromise between efficiency, harmonics of torque and harmonics of radial forces at the origin of the electromagnetic noise.
Design/methodology/approach
Based on a finite element approach, torque and magnetic pressure harmonics versus space and frequency are evaluated for different angle values. The evolutions of the different harmonics against the load angle are analyzed and compared to those of experimental measurements.
Findings
Depending on the load torque, fieldweakening or fieldboosting can be used to reduce current harmonics contributing the most to the radial magnetic forces responsible for the noise. Besides, a compromise can be found to avoid deteriorating too much the performances of the machine, thus being suitable with an industrial application.
Research limitations/implications
This study concerns low power permanent magnet synchronous machines with concentrated windings and driven with a trapezoidal control, while having sinusoidal backEMF.
Originality/value
The use of a simple mean and suitable with a largescale manufacturing industry to reduce the identified electromagneticborne noise of a specific electric drive makes the originality. 
[18] Optimization of the MMF spatial harmonic content to design electrical machine winding International Journal of Applied Electromagnetics and Mechanics (IJAEM), 10/2020 MARAULT Jérôme, GILLON Frédéric, HECQUET Michel, TOUNZI Abdelmounaïm 
[19] Rotor head shape optimization in a salient pole synchronous machine International Journal of Applied Electromagnetics and Mechanics (IJAEM), Vol. 64, N°. 1, 10/2020 MOHAMODHOSEN Bilquis, TOUNZI Abdelmounaïm, GILLON Frédéric 
[20] Effect of end windings on the shaft voltage of a high power alternator using FE analysis International Journal of Applied Electromagnetics and Mechanics (IJAEM), Vol. 63, N°. 4, pages. 661671, 07/2020 DARQUES Kévin, TOUNZI Abdelmounaïm, LE MENACH Yvonnick, KORECKI Julien, BEDDEK Karim 
[21] Investigating the use of grainoriented electrical steel in axialflux switched reluctance machines International Journal of Applied Electromagnetics and Mechanics (IJAEM), Vol. 63, N°. 4, pages. 691703, 07/2020 AYDOUN Racha, PARENT Guillaume, LECOINTE JeanPhilippe, TOUNZI Abdelmounaïm 
[22] Investigation on the shaft voltage generation of large synchronous turboalternators The International Journal for Computation and Mathematics in Electrical and Electronic Engineering (COMPEL), 05/2020 DARQUES Kévin, TOUNZI Abdelmounaïm, LE MENACH Yvonnick, BEDDEK Karim 
[23] Effect on magnetic properties of inhomogeneous compressive stress in thickness direction of an electrical steel stack Journal of Magnetism and Magnetic Materials (JMMM), Vol. 500, 04/2020, URL, Abstract HELBLING Hugo, BENABOU Abdelkader, VAN GORP Adrien, EL YOUSSEF Mohamad, TOUNZI Abdelmounaïm, BOUGHANMI Walid, LALOY Daniel 
The manufacturing processes of electrical machines may lead to significant degradation of magnetic core
properties and therefore of the machine performance. Laminations are usually stacked and pressed which affects
the magnetic properties and the iron losses. However, the influence of this step must be still investigated when
large generators are considered. Indeed, in that case, the stator and rotor stacking process consists in assembling
several stacks of electrical steel sheets separated by airvents. The surface of the airvent spacers represents about
ten percent of the lamination surface of the magnetic circuit, implying, during the compaction process, an
inhomogeneous stress distribution with significant local stresses. The present work deals with the experimental
characterization of a lamination stack, including airvents, under compressive stress in the thickness direction. A
mockup has been designed and builtup to study magnetic properties of lamination stacks under pressing
conditions corresponding to the industrial process. 
[24] Comparison of 8/6 radial and axial flux switched reluctance machines The International Journal for Computation and Mathematics in Electrical and Electronic Engineering (COMPEL), Vol. 38, N°. 6, 10/2019, URL AYDOUN Racha, PARENT Guillaume, TOUNZI Abdelmounaïm, LECOINTE JeanPhilippe, KOMEZA Krzysztof 
[25] Study of shaft voltage of a simplified synchronous generator International Journal of Applied Electromagnetics and Mechanics (IJAEM), Vol. 59, N°. 2, pages. 737744, 08/2019 DARQUES Kévin, TOUNZI Abdelmounaïm, LE MENACH Yvonnick, BEDDEK Karim 
[26] Dummy Slots Effect on the Torque Ripple and Electromagnetic Forces for Small Permanent Magnet Brushed DC Motors Journal of Electrical & Electronic Systems, Vol. 8, N°. 2, 07/2019 BEN HAMED Mohamed ali, TOLLANCE Thierry, HECQUET Michel, GILLON Frédéric, TOUNZI Abdelmounaïm 
[27] Topology Optimisation using Nonlinear Behaviour of Ferromagnetic Materials The International Journal for Computation and Mathematics in Electrical and Electronic Engineering (COMPEL), 09/2018, URL MOHAMODHOSEN Bilquis, GILLON Frédéric, TOUNZI Abdelmounaïm, CHEVALLIER Loïc 
[28] Canal Lock Variable Speed Hydropower Turbine Design and Control IET Renewable Energy Generation, 08/2018, URL ZHANG Jian, LEONTIDIS Vlasios, DAZIN Antoine, TOUNZI Abdelmounaïm, DELARUE Philippe, CAIGNAERT Guy, PIRIOU Francis, LIBAUX Antoine 
[29] Quantitative Design of a High Performance Permanent Magnet
Vernier Generator IEEE Transactions on Magnetics, Vol. 53, N°. 11, 11/2017 ZHANG Jian, TOUNZI Abdelmounaïm, DELARUE Philippe, PIRIOU Francis, LEONTIDIS Vlasios, DAZIN Antoine, CAIGNAERT Guy, LIBAUX Antoine 
[30] Iron Loss Calculation in a Synchronous Generator Using Finite Element Analysis IEEE Transactions on Energy Conversion, Vol. 32, N°. 2, pages. 640  648, 06/2017, URL, Abstract FRATILA Mircea, BENABOU Abdelkader, TOUNZI Abdelmounaïm, DESSOUDE Maxime 
This paper deals with the calculation of iron losses in a turgenerator using a magnetodynamic Finite Element (F.E.) Analysis accounting for the eddy currents in the damper bars. Two iron loss models, based on the Berttoti’s decomposition approach, are compared in the postprocessing step of a F.E. calculation. The numerical model of the studied system is validated by comparing the calculation and the experiment for noload conditions. 
[31] Stray load losses analysis of cage induction motor using 3D finite element method with external circuit coupling IEEE Transactions on Magnetics, Vol. 53, N°. 6, pages. 8202104, 06/2017, URL, Abstract CHEAYTANI Jalal, BENABOU Abdelkader, TOUNZI Abdelmounaïm, DESSOUDE Maxime 
The stray load losses in electrical machines represent a nonnegligible contribution of the total losses and are a key point for an accurate evaluation of the energy efficiency of the considered device. In this paper, a methodology using the 3D finiteelement (FE) modeling approach and a posteriori loss calculation is presented for the estimation of the stray load losses. The case of a cage induction motor is investigated, and results are compared with the experiment. The simulation is performed at different load conditions using a 3D FE model with external circuit coupling. 
[32] Robust nonlinear predictive control of permanent magnet synchronous generator turbine using Dspace hardware International Journal of Hydrogen Energy, Vol. 41, N°. 45, pages. 2104721056, 12/2016 AISSOU Riad, REKIOUA Toufik, REKIOUA Djamila, TOUNZI Abdelmounaïm 
[33] Application of nonlinear predictive control for charging the battery using wind energy with permanent magnet synchronous generator International Journal of Hydrogen Energy, Vol. 41, N°. 45, pages. 2096420973, 12/2016 AISSOU Riad, REKIOUA Toufik, REKIOUA Djamila, TOUNZI Abdelmounaïm 
[34] Estimation of FEM Model Parameters Using Data Assimilation and Its Application to an Electrical Machine IEEE Transactions on Magnetics, Vol. 52, N°. 3, 05/2016, URL BACCHUS Alexandre, TOUNZI Abdelmounaïm, ARGAUD JeanPhilippe, BOURIQUET Bertrand, BIET Mélisande, MACAIRE Ludovic, LE MENACH Yvonnick 
[35] Maximum Power Point Tracking Based Hybrid Hill Climb Search Method Applied to Wind Energy Conversion System Electric Power Components and Systems, Vol. 43, N°. 810, pages. 10281038, 06/2015, URL LALOUNI S., REKIOUA Djamila, IDJDARENE Kassa, TOUNZI Abdelmounaïm 
[36] EndRegion Leakage Fluxes and Losses Analysis of Cage Induction Motors Using 3D FiniteElement Method IEEE Transactions on Magnetics, Vol. 51, N°. 3, 04/2015, URL, Abstract CHEAYTANI Jalal, BENABOU Abdelkader, TOUNZI Abdelmounaïm, DESSOUDE Maxime, CHEVALLIER Loïc, HENNERON Thomas 
The stray load losses (SLLs) in electrical machines represent a nonnegligible contribution of the total losses and a key point for an accurate evaluation of the energy efficiency of considered device. In this paper, one aspect of these SLLs, the endregion leakage fluxes and losses, is investigated and considered for the case of a highpower cage induction motor. The study is performed at locked rotor, noload, and rated load conditions using a 3D finiteelement modeling approach. The influence of the leakage flux on the endregion conductive parts of the motor is analyzed together with the eddy current loss calculation. Finally, the SLLs are calculated and compared with the experimental measurements based on the IEEE standard 112method B test. 
[37] An improved MPPT algorithm for wind energy conversion system’ J. Electrical Systems, Vol. 10, N°. 4, pages. 484494, 12/2014 LALOUNI S., REKIOUA Djamila, IDJDARENE Kassa, TOUNZI Abdelmounaïm 
[38] Improved Analytical Determination of Eddy Current Losses in Surface Mounted Permanent Magnets of Synchronous Machine IEEE Trans Mag., Vol. 50, N°. 6, 06/2014 MARTIN Floran, ZAÏM Mohamed El Hadi, TOUNZI Abdelmounaïm, BERNARD Nicolas 
[39] A Combined Experimental and Finite Element Analysis Method for the Estimation of EddyCurrent Loss in NdFeB Magnets Sensors, Vol. 14, N°. 5, pages. 85058512, 05/2014, URL, Abstract FRATILA Radu, BENABOU Abdelkader, MIPO JeanClaude, TOUNZI Abdelmounaïm 
NdFeB permanent magnets (PMs) are widely used in high performance electrical machines, but their relatively high conductivity subjects them to eddy current losses that can lead to magnetization loss. The Finite Element (FE) method is generally used to quantify the eddy current loss of PMs, but it remains quite difficult to validate the accuracy of the results with complex devices. In this paper, an experimental test device is used in order to extract the eddy current losses that are then compared with those of a 3D FE model. 
[40] Calculation of iron loss in Solid Rotor Induction Machine using FEM IEEE Transactions on Magnetics, Vol. 50, N°. 2, 02/2014 FRATILA Mircea, BENABOU Abdelkader, TOUNZI Abdelmounaïm, DESSOUDE Maxime 
[41] Improved direct torque control of an induction generator in a wind conversion system connected to the grid ISA Transactions, Vol. 52, N°. 4, pages. 525538, 07/2013 ABDELLI Radia, REKIOUA Djamila, REKIOUA Toufik, TOUNZI Abdelmounaïm 
[42] Improved iron loss calculation for noncentered minor loops The International Journal for Computation and Mathematics in Electrical and Electronic Engineering (COMPEL), Vol. 32, N°. 4, 07/2013 FRATILA Mircea, BENABOU Abdelkader, TOUNZI Abdelmounaïm, DESSOUDE Maxime 
[43] Stochastic post processing calculation of iron losses Application to a PMSM The International Journal for Computation and Mathematics in Electrical and Electronic Engineering (COMPEL), Vol. 32, N°. 4, 07/2013 FRATILA Mircea, RAMAROTAFIKA Rindra, BENABOU Abdelkader, CLENET Stéphane, TOUNZI Abdelmounaïm 
[44] Nonlinear Modeling of Magnetization Loss in Permanent Magnets IEEE Transactions on Magnetics, Vol. 48, N°. 11, pages. 4, 11/2012, URL, Abstract FRATILA Radu, BENABOU Abdelkader, TOUNZI Abdelmounaïm, MIPO JeanClaude 
Permanent magnets are commonly used in electromechanical energy conversion devices, especially in permanent magnet synchronous machines (PMSM). When designing such devices, it is necessary to take account for the operating conditions of the permanent magnets. Ideally, the operating point of the magnet lies on a linear reversible demagnetization characteristic. Nevertheless, the operating conditions (temperature, demagnetization field, etc.) may have great influence on the magnetic characteristic that becomes strongly nonlinear and may lead to magnetization loss in the magnet. Consequently, the impact is also observed on the electrical machine performances. This paper presents a nonlinear model accounting for magnetization loss of permanent magnets which magnetic characteristic presents knee points in the demagnetization curve. The presented model is applied to analyze the local magnetization loss in magnets of a PMSM. 
[45] Wind energy conversion system associated to a flywheel energy storage system Analog Integrated Circuits and Signal Processing, Vol. 69, N°. 1, pages. 6773, 09/2011 IDJDARENE Kassa, REKIOUA Djamila, REKIOUA Toufik, TOUNZI Abdelmounaïm 
[46] Stochastic Modeling of the PullIn Voltage in a MEMS Beam Structure IEEE Transactions on Magnetics, Vol. 47, N°. 5, pages. 974977, 05/2011, URL, Abstract BOLONI Francisc, BENABOU Abdelkader, TOUNZI Abdelmounaïm 
This paper deals with a stochastic approach to model the pullin voltage in a microelectromechanical system (MEMS) beam structure. Two nonintrusive stochastic techniques are used: a sampling method, based on MonteCarlo simulations and a polynomial chaos expansion (PCE) approach. The deterministic model solves an electromechanical problem using a coupled 2D finite element (FE) electrostatic and Euler–Bernoulli beam equation mechanical model. The influence on the pullin voltage of three parameters subjected to uncertainty (material properties and shape) was investigated. Also, the advantage of the PCE method, compared to MonteCarlo sampling method, was emphasized. 
[47] Evaluation of the Perturbation Method for Iterative Calculations in 2D Finite Element Analysis Studies in Applied Electromagnetics and Mechanics : Computer Field Models of Electromagnetic Devices, Vol. 34, pages. 285291, 11/2010, URL, Abstract DAUSSY Benoit, LAVAL Damien, BENABOU Abdelkader, TOUNZI Abdelmounaïm 
The perturbation method is a simple way to study local details while avoiding a fine mesh of the whole system. In this paper, we present the influence of the extracted region size, i.e. the region including the perturbation, when performing iterative calculations with the perturbation technique. This influence is illustrated using a simple example. 
[48] Study and experimentation of a rotor current excited Vernier
reluctance machine aimed to directdriven applications EPJAP, Vol. 52, 10/2010 TOUNZI Abdelmounaïm, RAMDANE Brahim, ZAÏM Mohamed El Hadi 
[49] Study of Static and Dynamic Eccentricities of a Synchronous Generator Using 3D FEM IEEE Transactions on Magnetics, Vol. 46, N°. 8, 08/2010, Abstract TANNOIAMAMURA Bruno, LE MENACH Yvonnick, TOUNZI Abdelmounaïm, SADOWSKI Nelson, GUILLOT Eilin 
This paper deals with the study of static and dynamic rotor eccentricities of a synchronous generator using 3D FEM. First, both eccentricity cases are introduced as well as the used approach. Then the models of the structure, based on the magnetic scalar potential formulation and on the magnetic vector potential formulation, are presented. Two eccentricity modeling methods are introduced, the 2D eccentricity and the 3D eccentricity. Results obtained for magnetostatic and magnetodynamic cases related to both defects and their combination are presented and discussed. 
[50] Performance of an Isolated Induction Generator Under Unbalanced Loads IEEE Transactions on Energy Conversion, Vol. 25, N°. 2, pages. 303311, 06/2010 IDJDARENE Kassa, REKIOUA Djamila, REKIOUA Toufik, TOUNZI Abdelmounaïm 
[51] Comparison of pullin voltage in MEMS using 3D FEM and analytical approach International Journal for Computation and Mathematics in Electrical Engineering (COMPEL), Vol. 29, N°. 6, 05/2010, Abstract BOLONI Francisc, BENABOU Abdelkader, TOUNZI Abdelmounaïm 
Closed form expressions for the computation of the pullin voltage, can provide fast results within reliable accuracy, except when treating cases of extreme fringing fields. Finite Element based models come handy when high accuracy is needed. In the first model presented in this paper the FEM is used to solve the electrostatic problem, while the mechanical problem is solved using a simplified EulerBernoulli beam equation. The second model is a pure FEM model coupling the electrostatic and mechanical problems iteratively through the electrical force. Results for both scalar potential and vector potential formulations for the FEM models are presented. 
[52] Modeling and control of a 2Dof PM synchronous actuator
using Hall effect sensors Mechatronics, Vol. 20, N°. 1, pages. 153161, 02/2010 KREBS Guillaume, TOUNZI Abdelmounaïm, PAUWELS Brecht, WILLEMOT Dirk 
[53] Analysis of the force ripples of a current loaded PMLSM COMPEL: The International Journal for Computation and Mathematics in Electrical and Electronic Engineering, Vol. 28, N°. 3, pages. 750  761, 06/2009, URL, Abstract REMY Ghislain, GOMAND Julien, TOUNZI Abdelmounaïm, BARRE PierreJean 
Purpose – The purpose of this paper is to present an analysis of the force ripples of an open slot permanent magnet linear synchronous motor (PMLSM). A calculation procedure using 2D finite elements method (2DFEM) is then evaluated with experimentations.
Design/methodology/approach – First, the studied PMLSM and its main features are introduced. Then, the 2DFEM model used to study the motor is presented. The methods used to calculate the force and the meshing procedures are also highlighted. The calculated noload force is compared to measurements. Lastly, the validated model is used to study the influence of the current magnitude on the force ripples at load.
Findings – In addition to the noload case, the influence of the current magnitude on these forces is presented.
Originality/value – The paper is orientated with a sound industrial background. For that reason, the impact of the current saturation on the thrust generation is presented via the evolution of the thrust coefficient, which is the force to the RMS currents ratio. 
[54] Analytical Calculation of Interaction Force Between Orthogonally Magnetized Permanent Magnets Sensor Letters, Vol. 7, N°. 3, pages. 442445, 06/2009, Abstract JANSSEN J.L.G., PAULIDES J.J.H., LOMONOVA Elena, BOLONI Francisc, TOUNZI Abdelmounaïm 
In an advanced microlithographic system, it is of critical importance that components are resiliently isolated from external vibrations. In this paper, a passive/active electromagnetic
solution is discussed, where passive permanent magnets (PM) provide the gravity compensation and active electromagnets accurate positioning. Focus is on PM modelling, as an accurate model is inevitable to achieve the high accuracy required for such application.
This paper describes a study on interaction force along three degrees of freedom (DoF),
between permanent magnets (PMs) having an unaligned magnetization direction for use in a PMbased suspension application. Feasibility of finite element modeling (FEM) and analytical modelling for such structures is discussed, implemented and verified with
experimental measurements. 
[55] SourceField Method for 3D Magnetostatics: Influence of the Potential Created by the Exciting Currents JOURNAL OF MICROWAVES, OPTOELECTRONICS AND ELECTROMAGNETIC APPLICATIONS, Vol. 8, N°. 1, pages. 135142, 06/2009 HENNERON Thomas, PIRIOU Francis, TOUNZI Abdelmounaïm, CLENET Stéphane, BASTOS João Pedro Assumpção 
[56] Analytical Design of a Vernier Variable Reluctance Machine Journal of Electrical Engineering, Vol. 9, N°. 2, pages. 5867, 06/2009 DEKHINET A., TAÏBI Soufiane, TOUNZI Abdelmounaïm 
[57] Detent Force Calculations of a PMLSM using the Finite Element Method IEE Japan  Transactions on Industry Apllications, Vol. 129D, N°. 5, pages. 462469, 05/2009 GHISLAIN Rémy, KREBS Guillaume, TOUNZI Abdelmounaïm, BARRE PierreJean 
[58] Vector control of autonomous induction generator taking saturation effect into account Energy Conversion and Management, 11/2008 IDJDARENE Kassa, REKIOUA Djamila, REKIOUA Toufik, TOUNZI Abdelmounaïm 
[59] Study of an electromagnetic gearbox involving two permanent magnet synchronous machines using 3DFEM IEEE Trans Mag, Vol. 44, N°. 11, pages. 4381  4384, 10/2008 AUBERTIN Mathieu, TOUNZI Abdelmounaïm, LE MENACH Yvonnick 
[60] Modeling of a linear and rotary permanent magnet actuator, IEEE Transactions on Magnetics, 10/2008, Abstract KREBS Guillaume, TOUNZI Abdelmounaïm, PAUWELS Brecht, WILLEMOT Dirk 
In this paper, we propose to study an electromagnetic actuator which involves linear and /or rotary movements. The studied device is constituted of permanent magnets, iron teethed armature and concentrated coils with a simplified design. The aim of this paper is to study the main electromagnetic features of the actuator using 3D finite element method. First, the actuator is described and the design choices are given and discussed. Then, the electric and magnetic behaviors (fluxes, forces,…) are studied thanks to 3DFEM analyses. The formulation used is introduced. Finally, results are given and compared to measurements. 
[61] Design of a permanent magnet actuator for linear and rotary movements European Physical Journal ("Applied physics"), 04/2008, Abstract KREBS Guillaume, TOUNZI Abdelmounaïm, PAUWELS Brecht, WILLEMOT Dirk, PIRIOU Francis 
We describe in this paper the design of a permanent magnet actuator for linear and rotary movement. The actuator can make linear and rotary movements and special attention has been placed on the simplicity and the swiftness behavior. At first, we compare the different approaches to perform a linked movement and a structure is adopted. Then, we detail the adopted magnetic conversion through a rotary machine and a linear actuator. In a last part, the studied actuator is presented and results concerning the flux linkages and forces are given using 3D finite element simulations. 
[62] Design and study of a linear actuator using an analytical approach and the 3D FEM
COMPEL, Vol. 26, N°. 4, pages. 102116, 01/2007, Abstract KREBS Guillaume, TOUNZI Abdelmounaïm, PAUWELS Brecht, WILLEMOT Dirk, PIRIOU Francis 
Nowadays, the electromagnetic actuators for industrial processes have to present very specific features which can not always be obtained by classical machines. Hence, to reach the wanted features, one has to design the actuator and to quantify its performance with a good accuracy and reasonable computation time. The purpose of this paper is to present the design and the study of a linear actuator. First, we present the design of the chosen actuator structure. The second part is devoted to describe the approaches used (permeance network model and the 3D Finite element model) to study the behaviour of the actuator. Lastly, we give the results of the study, obtained by both models, and we compare them to experimental data obtained from the prototype build up.

[63] Study of a stator current excited vernier reluctance machine IEEE Energy Conversion, Vol. 21, N°. 4, pages. 823831, 12/2006 TAÏBI Soufiane, TOUNZI Abdelmounaïm, PIRIOU Francis 
[64] Application of FiniteElement Method to a PMLSM with NonSinusoidal Electromotive Force Transactions on Industrial Application of IEE, Japan, Vol. 126, N°. 10, pages. 13571362, 10/2006, URL, Abstract REMY Ghislain, TOUNZI Abdelmounaïm, BARRE PierreJean, PIRIOU Francis, HAUTIER JeanPaul 
An accurate thrust control of permanent magnet linear synchronous motors (PMLSM) is more efficient with a fine knowledge
of the harmonics value of the electromotive force (EMF). This is often difficult to obtain experimentally for a PMLSM. As a
consequence, this paper deals with the study of the nonsinusoidal EMF of a PMLSM using the 3D FiniteElement Method
(FEM). Two potential formulations are used to consider several cases. Afterwards, for the same accuracy, the computation times
are examined. The results of the FEM are compared to those given by the measurements from a test bench composed of a
Siemens LIMES400/120 linear motor and a dSPACE DS1005 realtime controller board. Finally, the advantages and the
limitations of the FE Analysis will be discussed. 
[65] Determination of magnetic characteristics of a variable reluctance machine excited by DC and AC currents COMPEL, Vol. 25, N°. 1, pages. 102116, 03/2006 TAÏBI Soufiane, TOUNZI Abdelmounaïm, PIRIOU Francis 
[66] An approach for the modelling of an autonomous induction generator taking into account the saturation effect IJEEPS, Vol. 4, N°. 1, pages. 123, 11/2005 REKIOUA Djamila, REKIOUA Toufik, IDJDARENE Kassa, TOUNZI Abdelmounaïm 
[67] Comparaison de structures électromagnétiques pour des applications à faible vitesse et fort couple RIGE, Vol. 8, N°. 2, pages. 259286, 01/2005 MACHMOUM M., MOREAU L., ZAÏM Mohamed El Hadi, AZZOUZI J., TOUNZI Abdelmounaïm 
[68] 3D approaches to determine the end winding inductances of a PMLSM IEEE Trans. Mag, Vol. 38, N°. 2, pages. 989992, 03/2004 TOUNZI Abdelmounaïm, HENNERON Thomas, LE MENACH Yvonnick, ASKOUR Rachid, DUMETZ Eric 
[69] Machines à réluctance Vernier : Conditions de fonctionnement RIGE, Vol. 6, N°. 56, pages. 637664, 10/2003 TAÏBI Soufiane, TOUNZI Abdelmounaïm, PIRIOU Francis 
[70] Modelling, control and simulation of an overall wind energy conversion system Renewable Energy, Vol. 28, N°. 8, pages. 11561324, 07/2003, Abstract DELARUE Philippe, BOUSCAYROL Alain, TOUNZI Abdelmounaïm, LANCIGU G 
The control of a wind energy conversion system can be decomposed in two parts: a local control depending on the power structure and a global control (strategy) deduced from global considerations. The local part ensures an efficient energy management of each component of the system. The local control structure can be deduced from the Energetic Macroscopic Representation, which is a graphical description of the system according to action and reaction principle. Using inversion rules, the deduced control structure is composed of a maximum of control operations and measurements. The global control part is independent of the power structure. This strategy part leads to achieve power objectives (active and reactive power targets) and system constraints (machine efficiency and DC bus limitation). Several strategies can be defined for the same system. These control decomposition is applied to a wind generation system composed of a permanent magnet synchronous generator and two threephase converters. Simulation results are provided for a 600 kW wind energy conversion system. 
[71] A non linear analytical model of switched reluctance machines European Physical Journal  Applied Physics, pages. 163172, 07/2002 SOFIANE Yamina, TOUNZI Abdelmounaïm, PIRIOU Francis 
[72] Study of Head Winding Effects in a Switched Reluctance Machine IEEE Trans Mag, Vol. 38, N°. 2, pages. 989992, 03/2002 SOFIANE Yamina, TOUNZI Abdelmounaïm, PIRIOU Francis, LIESE Manfred 
[73] Design and study of a double air gap Excited Vernier Reluctance Machine Studies in Applied Electromagnetics and Mechanics, Vol. 22, pages. 305310, 01/2002 TAÏBI Soufiane, TOUNZI Abdelmounaïm, CLENET Stéphane, PIRIOU Francis 
[74] The use of Genetic Algorithm to reduce the torque ripples of a Vernier Reluctance Machine Studies in Applied Electromagnetics and Mechanics, Vol. 22, pages. 311316, 01/2002 TAÏBI Soufiane, TOUNZI Abdelmounaïm, PIRIOU Francis 
[75] Numerical Modelling of an Unbalanced Short Shunt Induction Generator using Finite Element Method COMPEL, Vol. 19, N°. 3, pages. 787804, 01/2000 BRULE Stéphane, TOUNZI Abdelmounaïm, PIRIOU Francis 
[76] Design and optimisation of an excited reluctance generator using field computation IEEE Trans Mag, pages. 34943497, 09/1998 HAOUARA Ilhem, TOUNZI Abdelmounaïm, PIRIOU Francis 
[77] Commande vectorielle de la machine à réluctance variable à stator lisse. Prise en compte de la saturation et de l’amortissement Journal de Physique III, N°. 909926, 04/1997 TOUNZI Abdelmounaïm, MEIBODYTABAR Farid, SARGOS FrançoisMichel 
ACLN Revue nationale avec comité de lecture 
[1] Modélisation ForwardBackward des machines synchrones à pôles saillants en régime stationnaire EJEE, Vol. 15/4, pages. 297331, 01/2012 M. SARGOS F, TOUNZI Abdelmounaïm 
[2] Production d’énergie décentralisée par un système Machine à Réluctance VariableConvertisseurs statiques REE, pages. 4955, 07/1998 HAOUARA Ilhem, TOUNZI Abdelmounaïm, PIRIOU Francis 
ACT Conférence internationale avec acte 
[1] Effect of crosssaturation on the performance of synchronous reluctance machine operating as autonomous generator Intermag2023  Sendai  Japon, 05/2023 DJOUADI Yamina, TOUNZI Abdelmounaïm, IDJDARENE Kassa 
[2] Influence of Thickness on Eddy Current Losses in Materials Used as Clamping Structures in HighPower Electrical Machines Intermag 2023  Sendai  Japon, 05/2023 MOHAND OUSSAID Walid, TOUNZI Abdelmounaïm, ROMARY Raphaël, BENABOU Abdelkader, LALOY Daniel, BOUGHANMI Walid 
[3] Design of a PM Vernier machine with concentrated winding aimed at a direct drive in Wheel operating for Electric bus SMART 2022 Italie, 11/2022 GUENDOUZ Walid, TOUNZI Abdelmounaïm, REKIOUA Toufik 
[4] Analysis of PM Vernier machine prototypes aimed at a direct drive operating of EV IECON2022  Bruxelles  Belgique, 10/2022 GUENDOUZ Walid, TOUNZI Abdelmounaïm, REKIOUA Toufik 
[5] DTC of a synchronous reluctance machine for an autonomous generator operating CISTEM2022  Tunis  Tunisie, 10/2022 DJOUADI Yamina, TOUNZI Abdelmounaïm, IDJDARENE Kassa, REKIOUA Toufik, REKIOUA Djamila 
[6] Investigation of InterTurn ShortCircuit on a 9Phase PermanentMagnet Synchronous Machine ICEM2022 Valencia  Espagne, 09/2022 EL HAJJ Anthony, SEMAIL Eric, TOUNZI Abdelmounaïm, VIZIREANU Darius, CHEAYTANI Jalal 
[7] Investigation of Losses in Fingers and Clamping Plates of HighPower Electrical Machines ICEM2022 Valencia  Espagne, 09/2022 MOHAND OUSSAID Walid, TOUNZI Abdelmounaïm, ROMARY Raphaël, BENABOU Abdelkader, LALOY Daniel, BOUGHANMI Walid 
[8] Effect of dielectric resin impregnation process on the magnetic properties of electrical steels 2dm 2022, Cardiff  Royaume Uni, 09/2022, Abstract HELBLING Hugo, BENABOU Abdelkader, VAN GORP Adrien, TOUNZI Abdelmounaïm, BOUGHANMI Walid, LALOY Daniel 
For some specific industrial applications, such as large generators, once the magnetic circuits are built and wound, they are usually impregnated with a dielectric resin, which is polymerized under heat treatment, to ensure insulation, thermal and mechanical properties. This talk is about the experimental study of the effect of such impregnation process on the magnetic properties of electrical steels used for the manufacture large generator stators. 
[9] Analysis of magnetic properties degradation following industrial impregnation process 25th Soft Magnetic Materials Conference, Grenoble, France, 05/2022, Abstract HELBLING Hugo, BENABOU Abdelkader, VAN GORP Adrien, TOUNZI Abdelmounaïm, BOUGHANMI Walid, LALOY Daniel 
In this work, we propose to characterize and analyze the phenomena involved by an industrial impregnation process that degrades the magnetic properties (BH curve, iron losses) of electrical steels. Two main aspects are considered: the thermal effect as well as the dielectric resin deposition and diffusion within the magnetic circuit. 
[10] Determination of the magnetic degradation profile on the cuttingedge of punched electrical steels 25th Soft Magnetic Materials Conference, Grenoble, France, 05/2022, Abstract HELBLING Hugo, BEKIR Wissem, VAN GORP Adrien, BENABOU Abdelkader, MONTAGNE Alex, MESSAL Oualid, TOUNZI Abdelmounaïm, BOUGHANMI Walid, LALOY Daniel 
This paper presents a combined experimental/numerical approach to identify the degradation profile of the magnetic characteristics regarding the distance from the cut edge of punched electrical steels. Using a dedicated magnetic measurement device and mechanical hardness measurements, the impacted cuttingedge (I.CE) distance has been experimentally identified. In association with a magnetoplastic model, the numerical model allows to determine the I.CE distance and its associated degradation profile by an inverse optimization method. 
[11] Ninephase machines with symmetrical and asymmetrical star winding configurations: comparison for detection of incipient faults Electrimacs 2022  Nancy, 05/2022 EL HAJJ Anthony, SEMAIL Eric, TOUNZI Abdelmounaïm, CHEAYTANI Jalal, VIZIREANU Darius 
[12] Identification of magnetizing inductance of squirrel cage induction machine using FEM Intermag 2022, 01/2022 DJOUADI Yamina, TOUNZI Abdelmounaïm, TAÏBI Soufiane, IDJDARENE Kassa 
[13] A general analytical expression to model the air gap permeance of electrical machines Intermag 2021, 04/2021 MARAULT Jérôme, TOUNZI Abdelmounaïm, GILLON Frédéric, HECQUET Michel 
[14] Design of a quasiHalbach permanent magnet Vernier machine Intermag 2021, 04/2021 GUENDOUZ Walid, TOUNZI Abdelmounaïm, REKIOUA Toufik 
[15] Detection of Rotor Faults in Salient Pole Generator Using Flux Density Monitoring ICEM 2020, 08/2020 PLOYARD Maxime, FASQUELLE Aurélie, TOUNZI Abdelmounaïm, GILLON Frédéric 
[16] Performance comparison of axialflux switched reluctance machines with nonoriented and grain oriented electrical steel rotors Intermag2020, 05/2020 AYDOUN Racha, PARENT Guillaume, LECOINTE JeanPhilippe, TOUNZI Abdelmounaïm 
[17] Accurate analytical model to determine rotor bar currents of squirrel cage induction machines INTERMAG2020, 05/2020, Abstract MARAULT Jérôme, TOUNZI Abdelmounaïm, GILLON Frédéric, HECQUET Michel 
To design and study an electrical machine, Finite Element Model (FEM) is nowadays the most accurate approach as it takes into account different phenomenon. However, it is also timeconsuming which does not always make it suitable for an optimization process. Analytical model can then be used but it has to be as accurate as possible in order to obtain valid and relevant results. In case of squirrel cage induction machines, several analytical models have been proposed under different simplifying hypothesis [1]–[3] The well adapted one is the approach involving winding function to determine the armature Magneto Motive Forces (MMF) along with the air gap permeance. These two quantities can be expressed in a relatively accurate way [4]. The problem then remains in taking into account the rotor part in order to determine the currents which circulate in the bars of the squirrel cage. Indeed, in addition to the well estimate of the magnetic flux through the rotor surfaces, the determining of the elements of the equivalent electrical circuit which makes it possible to precisely calculate the currents of the bars in the most accurate way is required.
In the present paper, an analytical model of the squirrel cage based on an equivalent electrical circuit along with the approach to accurately identify its parameters is proposed. This model that enables to determine the rotor bar currents can be generalized to any structure and thus be used either for design or optimization purposes. Results obtained in the case of an induction machine prototype are compared to the ones given by FEM. 
[18] Effect on magnetic properties of inhomogeneous compressive stress in thickness direction of an electrical steel stack SMM 2019, Poznan, Poland, 09/2019 HELBLING Hugo, BENABOU Abdelkader, VAN GORP Adrien, EL YOUSSEF Mohamad, TOUNZI Abdelmounaïm, BOUGHANMI Walid, LALOY Daniel 
[19] Winding Design Method by Optimization of MMF harmonic content ISEF 2019, 08/2019, Abstract MARAULT Jérôme, GILLON Frédéric, HECQUET Michel, TOUNZI Abdelmounaïm 
Magneto Motive Force is an important quantity to analyze electrical machine performances. Indeed, the latter is directly linked to that of the air gap magnetic flux density and thus to the torque ripples, vibration and then noise. This paper proposes to reduce the MMF harmonic content by means of optimization process using monoobjective or multiobjective algorithms with discrete and continuous variables. For this aim, optimization algorithm is coupled with an analytical tool which enables calculating quickly the MMF harmonic content from winding parameters. A winding optimization of three different windings with the same number of pole pairs is proposed to show the suitability of this process. 
[20] Analysis of Shaft Voltage of Large Turbogenerators for rotor defect detection purposes ISEF 2019, 08/2019 DARQUES Kévin, TOUNZI Abdelmounaïm, LE MENACH Yvonnick, BEDDEK Karim 
[21] Topology Optimisation of a Salient Pole Synchronous Generator ISEF2019, 08/2019 MOHAMODHOSEN Bilquis, TOUNZI Abdelmounaïm, GILLON Frédéric 
[22] Effect of the load angle on radial forces and torque ripple of a PMSM with trapezoidal supply ISEF 2019  19th International Symposium on Electromagnetic Fields in Mechatronics, Electrical and Electronic Engineering, Nancy  FRANCE, 08/2019, Abstract UYGUN Emre, HECQUET Michel, TOUNZI Abdelmounaïm, DEPERNET Daniel, LANFRANCHI Vincent, BRUNO Serge, TOLLANCE Thierry 
This paper deals with the study of the influence of the phase shift between currents and backelectromotive forces on torque ripple and radial magnetic forces for a low power synchronous machine supplied with 120 degrees squarewave currents. Based on a finite element approach, torque and magnetic pressure harmonics versus space and frequency are evaluated for different angle values. The aim is to establish a good compromise between efficiency, harmonics of torque and harmonics of radial forces at the origin of the electromagnetic noise. The evolutions of the different harmonics against the load angle are analyzed and compared to those of experimental measurements. 
[23] Coupling between an Analytical Tool and Stator Current Sheet to Test the Inherent Impact of Armature Winding Distribution using FEM COMPUMAG 2019, 07/2019, Abstract MARAULT Jérôme, TOUNZI Abdelmounaïm, GILLON Frédéric, HECQUET Michel 
Study of the impact of stator MMF from different winding distributions using FEM can be tedious when taking into account the stator slots as it introduces mesh constraint and reluctance variation of the air gap. To avoid this fact, a current sheet spread all around the inner stator surface is used. In the proposed approach, the MMF is modelled by the equivalent current sheet of the real stator MMF in the air gap. This current sheet is coupled with an analytical tool that allows obtaining the spatiotemporal stator MMF of any winding considered. Compared to an analytical model, the proposed approach enables taking into account the non linear behaviour of magnetic material in the yoke and thus testing different combinations of stator windings in more realistic conditions. 
[24] Performances Analysis of a MicroGrid System Composed of Renewable Energies Sources with Hybrid Energy Storage System’ Electrimacs2019, 05/2019 TAMALOUZT Salah, BENYAHIA N., TOUNZI Abdelmounaïm, IDJDARENE Kassa 
[25] Influence of the load angle on magnetic radial forces and torque ripple for different control strategies ELECTRIMACS 2019 Salerno, Italy, 05/2019, Abstract UYGUN Emre, HECQUET Michel, TOUNZI Abdelmounaïm, DEPERNET Daniel, LANFRANCHI Vincent, BRUNO Serge, TOLLANCE Thierry 
This paper shows the impact of the shift phase angle ψ between phase currents and backelectromotive forces (backEMFs) on torque and radial forces for a low power synchronous machine (20 W). Pressure harmonics versus space and frequency on our motor and torque are evaluated with different angles with finite element approach. The aim is to establish a good compromise between consumed current, harmonics of torque and harmonics of radial forces linked to the electromagnetic noise for two strategies: maximum torque per ampere (MTPA) control and field weakening (FW) control. The evolution of each harmonic versus ψ are compared for both strategies. Experimental measurements in sinusoidal case are detailed. 
[26] Dummy slots effect on the torque ripple and electromagnetic forces for small permanent magnet brushed DC motors. 2019 Fourteenth International Conference on Ecological Vehicles and Renewable Energies (EVER), Monaco,, 05/2019, Abstract BEN HAMED Mohamed ali, TOLLANCE Thierry, HECQUET Michel, GILLON Frédéric, TOUNZI Abdelmounaïm 
Permanent magnet brushed DC motors are used in several applications such as home automation or automotive industry. This is mainly due to their lightweight, low cost and compact structure. Thus, the importance to study the sources of noise and vibration in these motors, which is often complicated and can be attributed to many factors. In this paper, the cogging torque and electromagnetic forces are studied in the case of a small permanent magnet brushed DC motor with 2 poles and 3 slots. Addition of dummy slots on the rotor side is described with its effect on the evolution of both aspects. The aim of this study is to give the quantitative effect about torque ripple and radial forces for each harmonic in relation with these dummy slots. 
[27] Detection of magnetization loss in a PMSM with Hilbert Huang transform applied to noninvasive search coil voltage ELECTRIMACS 2019, Salerno, Italy, 05/2019, Abstract ZHANG Jian, TOUNZI Abdelmounaïm, BENABOU Abdelkader, LE MENACH Yvonnick 
This paper presents a novel method for demagnetization fault detection of permanent magnet synchronous machine (PMSM). Demagnetization fault is a common problem existing in PMSM which deteriorates the machine performance and can lead to serious secondary machine damages. Unlike the most popular method for detecting this fault which is based on the analysis of the machine current, the approach proposed in this paper analyses the voltage signal of a noninvasive search coil by means of Hilbert Huang transform. Simulations are carried out with a two dimensional finite element analysis (FEA) for different demagnetization levels to verify the proposed method. 
[28] Topology Optimisation of the Rotor Pole Shape in a Synchronous Power Generator Conférence IEEE, 10/2018 MOHAMODHOSEN Bilquis, GILLON Frederic, TOUNZI Abdelmounaïm 
[29] Detection of short circuits in the rotor field winding in large hydro generator ICEM 2018, 09/2018 KOKOKO Olivier, MERKHOUF A., TOUNZI Abdelmounaïm, ESSALHI Mounir, GUILLOT Eilin, KEDJAR Bachir, ALHADDAD K. 
[30] Optimization of machine winding to mitigate the magneto motive force harmonic content OIPE 2018, 09/2018, Abstract MARAULT Jérôme, LA DELFA Patricio, GILLON Frédéric, HECQUET Michel, TOUNZI Abdelmounaïm 
The magneto motive force is an important physical quantity for electrical machines. Indeed its harmonic content leads to that of the air gap flux density. This paper presents an optimisation of the winding distribution for three phase fractional slot concentrated winding (FSCW) and distributed winding (DW) in order to reduce the magneto motive force harmonic content. This have an important effect on torque ripples, vibration and then noise. The optimization will be done on continue and discrete variables linked to the winding distribution. 
[31] A fast and accurate analytical tool to study the winding function ICEM 2018, 09/2018, Abstract MARAULT Jérôme, TOUNZI Abdelmounaïm, HECQUET Michel, GILLON Frédéric 
Magneto motive force is a key quantity of the energy conversion in the electrical machines. Its harmonic content is important as it leads to the one of the magnetic flux density in the air gap. To analyze it, a first step consists to study the winding function. Many tools already exist to tackle this point but generally they use some methods like Star of slots or matrix representation and the harmonic content is obtained by a Fast Fourier Transform of the total winding function. In the present paper, we propose to build up the winding function using elementary patterns whose harmonic contents are used to reach the one of the whole function using a geometrical construction. This approach is quite fast and allows easy analyzing in order to reduce or cancel a magnetic harmonic. 
[32] Design of low power motors with a good compromise between ripple torque and radial forces. XXIIIrd International Conference on Electrical Machines (ICEM'2018) Ramada Plaza Thraki Alexandroupoli  Greece September 36, 2018, 09/2018, Abstract TOLLANCE Thierry, HECQUET Michel, TOUNZI Abdelmounaïm, GILLON Frédéric 
The aim of this paper concerns the design with these targets for low power motors that offer a good compromise in terms of performance: speed, torque, current, and noise linked to the radial forces. Different low power machines and topologies are studied with the same constraints in term of volume for the same value of the torque. The study is carried out on a PMSM with surface permanent magnet ‘SPM’ and with insert permanent magnet ‘IPM’. In order to reduce the cost, a synchronous reluctance machine ‘SynRM’ is also designed and studied. 2D and 3D Finite Element modeling are used to compare the performance of the three different topologies. In addition, the best solutions are realized and tested. 
[33] Investigating the use of grainoriented electrical steel in axialflux switched reluctance machines EPNC2018, 06/2018 AYDOUN Racha, PARENT Guillaume, LECOINTE JeanPhilippe, TOUNZI Abdelmounaïm 
[34] Effect of the end winding on the shaft voltage of a high power alternator EPNC 2018, 06/2018, Abstract DARQUES Kévin, TOUNZI Abdelmounaïm, LE MENACH Yvonnick, BEDDEK Karim 
Shaft voltage is present in all electrical machines and can be useful as a diagnosis variable but first, it is important to quantify the effect of some defects. 2D numerical models have already been used to tackle this point. However, 3D effects due to end windings can have a significant influence on this voltage. This paper deals with the study of a turbogenerator using a 3D finite element model in order to investigate this task. 
[35] Low power electrical motors design with a good compromise between ripple torque and radial forces. EVER'18, Ecological Vehicles and Renewable Energies, 10 au 12 avril 2018, Monaco, 04/2018, Abstract TOLLANCE Thierry, HECQUET Michel, GILLON Frédéric, TOUNZI Abdelmounaïm 
This paper studies different low power machines and topologies with the same constraints in term of volume for the same value of the torque. The aim of this paper concerns the design with these targets for low power motors that offer a good compromise in terms of performance: speed, torque, current, and noise linked to the radial forces. The study is carried out on a PMSM with surface permanent magnet ‘SPM’ and with insert permanent magnet ‘IPM’. In order to reduce the cost, a synchronous reluctance machine ‘SynRM’ is also designed and studied. 2D and 3D Finite Element modeling are used to compare the performance of the three different topologies. 
[36] Control of the grideside converter in wind conversion systems with flywheel energy storage and constant switching frequency IRSEC2017, 12/2017 ABDELLI Radia, BOUZIDA A., REKIOUA Djamila, REKIOUA Toufik, TOUNZI Abdelmounaïm 
[37] Vector Control of Autonomous Induction Generator with Battery Storage System IRSEC2017, 12/2017 IDJDARENE Kassa, REKIOUA Djamila, REKIOUA Toufik, TOUNZI Abdelmounaïm 
[38] Finite element based quantitative and qualitative impact assessment of field winding turns short circuits in large hydro generators CIGRE2017, 10/2017 KOKOKO Olivier, MERKHOUF A., KEDJAR Bachir, TOUNZI Abdelmounaïm, ALHADDAD K., GUILLOT Eilin 
[39] Canal Lock Variable Speed Hydropower Turbine Energy Conversion System EVER 2017, 04/2017 ZHANG Jian, TOUNZI Abdelmounaïm, DELARUE Philippe, PIRIOU Francis, LEONTIDIS Vlasios, DAZIN Antoine, CAIGNAERT Guy, LIBAUX Antoine 
[40] Quantitative design of a high performance permanent magnet vernier generator Intermag 2017, 04/2017 ZHANG Jian, TOUNZI Abdelmounaïm, LEONTIDIS Vlasios, DELARUE Philippe, PIRIOU Francis, CAIGNAERT Guy, LIBAUX Antoine, DAZIN Antoine 
[41] Study of shaft voltage of a simplified synchronous generator ISEM 2017, pages. 2, 03/2017, Abstract DARQUES Kévin, TOUNZI Abdelmounaïm, LE MENACH Yvonnick, BEDDEK Karim 
In large turbogenerators, the analysis of the shaft voltage can be useful to diagnose some defects such as eccentricities or rotor short circuit. To do that, the first step is to quantify the inherent effect of each defect on that voltage. This paper deals with the study of a simplified synchronous generator with a smooth slotless stator using a numerical model in order to well understand the effect of each defect. 
[42] Lock hydroelectrical power generation feasability study ViennaHydro, Vienne, 11/2016 LEONTIDIS Vlasios, ZHANG Jian, CAIGNAERT Guy, DELARUE Philippe, TOUNZI Abdelmounaïm, PIRIOU Francis, LIBAUX Antoine, DAZIN Antoine 
[43] Stray load losses analysis of cage induction motor using 3D finite element method with external circuit coupling CEFC 2016, Miami  EtatsUnis, 11/2016, Abstract CHEAYTANI Jalal, BENABOU Abdelkader, TOUNZI Abdelmounaïm, DESSOUDE Maxime 
The stray load losses in electrical machines represent a nonnegligible contribution of the total losses and are a key point for an accurate evaluation of the energy efficiency of the considered device. In this paper, a methodology using the 3D finite element (FE) modeling approach and a posteriori loss calculation is presented for the estimation of the stray load losses. The case of a cage induction motor is investigated and results are compared with the experiment. The simulation is performed at different load conditions using a 3D FE model with external circuit coupling. 
[44] Topology Optimisation of a 3D Electromagnetic Device using the SIMP DensityBased Method CEFC 2016, 11/2016, Abstract MOHAMODHOSEN Bilquis, GILLON Frédéric, TOUNZI Abdelmounaïm, CHEVALLIER Loïc, KORECKI Julien 
Abstract—The presented paper proposes a topology optimisation methodology based on the densitybased method SIMP, and applied to a numerical example to validate the former. The approach and methodology are detailed, and the results for a 3D basic electromagnetic example are presented. The nonlinear B(H) curve is also taken into account.
Index Terms—gradientbased algorithm, relaxation of variables, SIMP density method, weighted objective sum 
[45] Numerical study of two synchronous machines aimed to be used in an offshore wind power application’ CISTEM2016, 11/2016 KORECKI Julien, TOUNZI Abdelmounaïm, AMMAR Aymen, BENDALI Sofiane, LALOY Daniel 
[46] Combined Fuzzy Logic and Sliding Mode Control of an Autonomous Induction Generator’ CISTEM2016, 11/2016 ABERBOUR A., IDJDARENE Kassa, TOUNZI Abdelmounaïm 
[47] analysing the effect of different approaches with simp density method for topology optimisation of an electromagnetic device OIPE 2016, 09/2016, Abstract MOHAMODHOSEN Bilquis, GILLON Frédéric, TOUNZI Abdelmounaïm, DELHAYE Florent 
Abstract. This paper presents different approaches while using the SIMP densitybased method for the Topology Optimisation (TO) of a 3D electromagnetic device. The methodology used for TO is also detailed in this paper. The initial model and the formulation of the problem are presented, and the results for two approaches are analysed. A Finite Element calculation code is coupled with a gradientbased algorithm to numerically execute the proposed methodology for TO.
Keywords: 3D Finite Element Model, gradientbased fmincon SQP algorithm, SIMP densitybased method, Topology Optimisation 
[48] Characterization and Validation of a Large Hydrogenerator Under Dynamic Conditions ICEM2016, 09/2016 KOKOKO Olivier, TOUNZI Abdelmounaïm, MERKHOUF A., GUILLOT Eilin, ALHADDAD K. 
[49] An approach to model shaft voltage of wound rotor synchronous machines CEFC 2016, pages. 1, 08/2016, Abstract DARQUES Kévin, TOUNZI Abdelmounaïm, LE MENACH Yvonnick, BEDDEK Karim, BIET Mélisande 
In the case of high power synchronous machines, shaft voltage can induce high currents yielding to bearing damages but it can also constitutes a variable to be used to diagnosis some machine defects. Therefore, it is important to well model the phenomenon in order to use it in further diagnosis tool. 
[50] Alternator Rotor Interturn ShortCircuit Identification using FEM Based Learning 9th IFAC SAFEPROCESS 2015 Symposium, 09/2015, Abstract BACCHUS Alexandre, BIET Mélisande, MACAIRE Ludovic, TOUNZI Abdelmounaïm, LE MENACH Yvonnick 
The goal of this paper is to identify rotor interturn shortcircuits of an alternator.
The detection method is based on the analysis of a ux probe signal located in the air gap
of the machine. Previous works have shown that pattern recognition can be applied to detect
such a fault by using the experimental data as prototypes. A new method is developed here by
considering a learning step based on simulation. Therefore the machine is modeled and validated.
A feature selection is made by considering feature correlation and disparity. Finally, k nearest
neighbors is used to classied experimental test data. 
[51] Loss analysis of surfacemounted permanent magnet synchronous motor due to carrier harmonics using 3D FEM International symposium on electromagnetic fields (ISEF), 09/2015, Abstract CHEAYTANI Jalal, BENABOU Abdelkader, TOUNZI Abdelmounaïm, DESSOUDE Maxime 
Electromagnetic losses in permanent magnet synchronous motors (PMSM) occur in the laminated core as well as in the permanent magnets (PM). These losses can lead to an overheating of the PMs that are subject to magnetization loss. Due to the difficulty of distinguishing experimentally the iron losses in the laminations from the eddy current losses in the PM, it is necessary to resort to the simulation. In this work, the losses of a PMSM, fed by a PWM inverter, are investigated using the 3D FEM. The PWM measured signal is imposed, using a linear interpolation and respecting the harmonic content, as an input of the simulation. 
[52] ANALYSING THE EFFECT OF SIMP METHOD IN TOPOLOGY OPTIMISATION USING FLEXIBLE 3D ELECTROMAGNETIC MODEL Conférence ISEF 2015, 09/2015, Abstract MOHAMODHOSEN Bilquis, GILLON Frédéric, TOUNZI Abdelmounaïm 
This paper presents a methodology to optimise the topology of a 3D electromagnetic model to maximise Energy while constraining the Material Quantity. Variants of the material distribution method SIMP (Solid Isotropic Material with Penalisation) are discussed to enhance convergence of variables. The aim is to improve the results by analysing the behaviour of the design variables w.r.t the objectives. This allows correct parameter tweaking and finding the best variant for the SIMP Method respective to our methodology. This would help reduce the time consumed to find the best solution and therefore enhance the accuracy of the results. 
[53] Eddy current computation in 2DFEM for permanent magnet loss calculation Compumag 2015, Montreal, Canada, 07/2015 BOUGHANMI Walid, HENNERON Thomas, BENABOU Abdelkader, TOUNZI Abdelmounaïm, ZAÏM Mohamed El Hadi 
[54] Estimation of FEM model parameters using data assimilation 
Application to an electrical machine COMPUMAG 2015 Montréal, Canada, 06/2015, Abstract BACCHUS Alexandre, ARGAUD JeanPhilippe, BOURIQUET Bertrand, BIET Mélisande, TOUNZI Abdelmounaïm 
The goal of this paper is to identify the real parameter set of a given machine. The identification method is based on data assimilation coupled with a FEM model. Data assimilation method is an optimization approach that limit the space of candidate parameter sets by centering it to the ideal machine. An application to an electrical machine is presented based on the analysis of flux probe signals. 
[55] Free Vibration Analysis of a Large Hydroelectric Generator and Computation of Radial Electromagnetic Exciting Forces IEMDC2015, Coeur d’Alène, Idaho, USA, 05/2015 DIRANI H.C., CUPILLARD S., MERKHOUF A., BÉLANGER S., TOUNZI Abdelmounaïm 
[56] Analysis of AirGap Influence on a Large Hydro Generator’s Parameters Using Sudden Symmetrical ShortCircuit Test IEMDC2015, 05/2015 KOKOKO Olivier, MERKHOUF A., TOUNZI Abdelmounaïm, ALHADDAD K., GUILLOT Eilin 
[57] FiniteElement Investigation on ZigZag Flux in Squirrel Cage Induction Machines International Conference on Electrical Machines (ICEM2014), 09/2014, Abstract CHEAYTANI Jalal, BENABOU Abdelkader, TOUNZI Abdelmounaïm, DESSOUDE Maxime 
The stray load losses represent a nonnegligible contribution to the total losses in electrical machines. This paper investigates a contribution to these losses in the case of a nonskewed squirrel cage induction motor, namely the zigzag flux. The study is performed at noload, lockedrotor and load conditions for an induction machine with different rotor slot openings, using a time stepping 3D finite element modeling approach. The discrete Fourier transform is used to analyze the magnetic flux density waveforms in the air gap and deduce the main harmonics related to the zigzag flux. The influence of the rotor slot opening on the zigzag flux and core losses, in both rotor and stator, are discussed. 
[58] Effect of magnetic material nonlinearities on the acoustic behavior of 4phase SRMs International Conference on Electrical Machines (ICEM2014), 09/2014 MECHMECHE Haifa 
[59] Vibration and acoustic noise estimation for switched reluctance motors with quasiaxisymmetry hypothesis ISMA 2014, International Conference on Noise and Vibration Engineering  Leuven, Belgium, 09/2014, Abstract MECHMECHE Haifa 
Vibration and acoustic noise can constitute a serious problem for Switched Reluctance Motors (SRMs). They are mainly caused by the deformation of the stator lamination stack due to its magnetic attraction to the rotor. This paper presents a 2D multiphysic methodology which permits to predict electromagnetic acoustic noise generated by SRMs, since the early design phase. In order to achieve the best compromise between accuracy and computational time, a hybrid methodology was adopted. It is based on a Finite Element (FE) magnetic model to take into account magnetic nonlinearities, especially for SRMs which are usually highly saturated. The vibration and acoustic models are based on analytic approaches and are integrated in an inhouse tool we developed: GRIMM (Generic Ring Model for Magnetic Noise). This tool has been validated by a full FE approach for an 8/6 SRM at each step and good agreements are obtained. Its accuracy was improved by taking into account the stator teeth effect in terms of mass correction and by means of quasiaxisymmetry hypothesis. 
[60] Effect of magnetic material nonlinearities on the acoustic behavior of 4phase SRMs International Conference on Electrical Machines (ICEM2014), 09/2014 HECQUET Michel, TOUNZI Abdelmounaïm, GILLON Frédéric, FRITZ Guillaume 
[61] Vibration and acoustic noise estimation for switched reluctance motors with quasiaxisymmetry hypothesis ISMA 2014, International Conference on Noise and Vibration Engineering  Leuven, Belgium, 09/2014, Abstract HECQUET Michel, TOUNZI Abdelmounaïm, GILLON Frédéric, FRITZ Guillaume 
Vibration and acoustic noise can constitute a serious problem for Switched Reluctance Motors (SRMs). They are mainly caused by the deformation of the stator lamination stack due to its magnetic attraction to the rotor. This paper presents a 2D multiphysic methodology which permits to predict electromagnetic acoustic noise generated by SRMs, since the early design phase. In order to achieve the best compromise between accuracy and computational time, a hybrid methodology was adopted. It is based on a Finite Element (FE) magnetic model to take into account magnetic nonlinearities, especially for SRMs which are usually highly saturated. The vibration and acoustic models are based on analytic approaches and are integrated in an inhouse tool we developed: GRIMM (Generic Ring Model for Magnetic Noise). This tool has been validated by a full FE approach for an 8/6 SRM at each step and good agreements are obtained. Its accuracy was improved by taking into account the stator teeth effect in terms of mass correction and by means of quasiaxisymmetry hypothesis. 
[62] Endregion leakage fluxes and losses analysis of cage induction motors using 3D finite element method Conference on Electromagnetic field computation (CEFC 2014), 05/2014, Abstract CHEAYTANI Jalal, BENABOU Abdelkader, TOUNZI Abdelmounaïm, DESSOUDE Maxime 
The stray load losses in electrical machines represent a nonnegligible contribution of the total losses and are a key point for an accurate evaluation of the energy efficiency of the considered device. In this paper, one aspect of these stray load losses, the endregion leakage fluxes and losses, is investigated for the case of a high power cage induction motor. The study is performed at locked rotor condition using a 3D finite element (FE) modeling approach. The influence of the leakage flux on the endregion conductive parts of the motor is analyzed together with the eddy current loss calculation. 
[63] Calculation and measurement of eddycurrent loss in NdFeB Magnet ISEF, Ohrid, Macedonia, 09/2013, Abstract FRATILA Radu, BENABOU Abdelkader, TOUNZI Abdelmounaïm, MIPO JeanClaude 
NdFeB permanent magnets (PM) are widely used in high performance electrical machines but their relatively high conductivity subjects them to eddy current losses that can lead to magnetization loss. Finite Element (FE) method is generally used to quantify the eddy current loss of PM but it remains quite difficult to validate the accuracy of the results with complex devices. In this paper, an experimental test device is used in order to extract the eddy current losses that are compared with those of a 3D FE model. 
[64] Vibration And Acoustic Noise Prediction in an 8/6 SRM Using Coupled Analytical MultiPhysic Models ISEF 2013  XVI International Symposium on Electromagnetic Fields in Mechatronics, Electrical and Electronic Engineering  Ohrid, Macedonia, 09/2013, Abstract MECHMECHE Haifa, HECQUET Michel, TOUNZI Abdelmounaïm, GILLON Frédéric, FRITZ Guillaume 
The main advantages of the Switched Reluctance Motor (SRM) are its robust construction and its low cost which makes this technology an attractive solution for traction applications. However, one of its major drawbacks is the high mechanical vibrations and acoustic noise. These vibrations and acoustic noise are mainly caused by the deformation of the stator lamination stack due to its magnetic attraction to the rotor. The aim of this study is to build a complete coupled multiphysic tool allowing the prediction of electromagnetic acoustic noise in an 8/6 SRM. The goal of such a tool is to be integrated in an optimization process. This tool is based on 2D electromagnetic, vibration and acoustic models which are calculated through analytical approaches. The vibroacoustic analytical results are compared to those of a FE approach and good agreements are obtained. 
[65] Calculation of Iron loss in Solid Rotor Induction Machine using FEM Compumag 2013, Budapest, Hungary, 07/2013, Abstract FRATILA Mircea, BENABOU Abdelkader, TOUNZI Abdelmounaïm, DESSOUDE Maxime 
This paper presents a study on iron loss estimation for a solid rotor induction motor fed by Pulse Width Modulated (PWM) supply. The iron losses are often determined using an a posteriori method that can lead to more or less important deviations, compared with measurements, depending on the used models and implementation techniques. The methodology proposed here consists in computing the iron loss with an analytical method implemented in a postprocessing of a 2D finiteelement analysis. Different implementation techniques are used in order to investigate the impact of the model on the total iron loss. 
[66] Nonlinear magnetization loss in sintered NdFeB magnet due to eddy current heat dissipation Compumag 2013, Budapest, Hungary, 07/2013, Abstract FRATILA Radu, BENABOU Abdelkader, TOUNZI Abdelmounaïm, MIPO JeanClaude 
NdFeB permanent magnets are widely used in electromechanical energy conversion devices, especially in high performance electrical machines. When designing such devices, it is necessary to take account of the operating conditions of the permanent magnets. Ideally, the operating point of the magnet lies on a linear reversible demagnetization characteristic. Nevertheless, the operating conditions (temperature, demagnetization field …) may have great influence on the magnetic characteristic that becomes strongly nonlinear and lead to irreversible magnetization loss. To study such effect, the Finite Element (FE) method can be used in order to describe with accuracy the local demagnetization loss of a permanent magnet (PM). Therefore, the present work deals with the nonlinear modeling of a PM implemented in a 3D FE model that takes into account the partial demagnetization effects with temperature dependencies. 
[67] A Fast and Accurate MultiPhysic Approach to Predict Acoustic Noise: Application to SRMs COMPUMAG 2013, Budapest, Hungary, 07/2013, Abstract MECHMECHE Haifa, HECQUET Michel, TOUNZI Abdelmounaïm, GILLON Frédéric, FRITZ Guillaume 
Vibration and acoustic noise can constitute a serious problem in electric machines. They are mainly caused by the deformation of the stator lamination stack due to its magnetic attraction to the rotor. This paper presents a 2D multiphysic tool which permits to predict electromagnetic acoustic noise generated by electric motors, since the early design phase. This tool is based on 2D magnetic, vibration and acoustic models and the final goal is to find the best compromise between accuracy and calculation time. The magnetic model is based on the Finite Element (FE) method in order to take into account nonlinearities, especially for SRMs which are usually highly saturated. The vibration and acoustic models are calculated through analytic approaches. The analytical results are then compared to those of a full FE approach for an 8/6 SRM and good agreements are obtained. 
[68] Comparison of supervised classification algorithms combined with feature extraction and selection: Application to a turbogenerator rotor fault detection Diagnostics for Electric Machines, Power electronics and Drives (SDEMPED), 2013 9th IEEE International Symposium on, pages. 558  565, 01/2013, Abstract BACCHUS Alexandre, BIET Mélisande, MACAIRE Ludovic, TOUNZI Abdelmounaïm, LE MENACH Yvonnick 
The goal of this paper consists in applying pattern recognition methods to turbogenerators. Previous works have shown that a monitor, thanks to pattern recognition, is practical on asynchronous machines. This procedure has rarely taken advantage of these methods for turbogenerator. The statistical model has been obtained from harmonics extracted from flux probes and from stator current and voltage. For this purpose, the main way is to build a learning matrix to predict the functional state of a new measurement. Finally, three classifiers have been compared: k Nearest Neighbors, Linear Discriminant Analysis and Support Vector Machines. The best classification result is obtained by Linear Discriminant Analysis combined with Factorial Discriminant Analysis achieving a score of 84.6%. 
[69] Impact of the material and geometry uncertainties on the pullin voltage in a MEMS beam structure OIPE 2012, Ghant, 09/2012, Abstract BENABOU Abdelkader, BOLONI Francisc, TOUNZI Abdelmounaïm, CLENET Stéphane 
This communication addresses the modelling of the parameter known as the pullin voltage in electrostatic MEMS (Micro Electro Mechanical System). As this parameter is sensitive to the physical parameters of the MEMS device, a stochastic modelling approach may be required. Two nonintrusive stochastic techniques are used: a sampling method based on MonteCarlo simulations and a Polynomial Chaos Expansion (PCE) approach. The electromechanical problem is solved using the coupling between a 2D Finite Element (2DFE) electrostatic model and the EulerBernoulli beam equation for the mechanical model. The influence on the pullin voltage of three parameters subjected to uncertainty (material property and geometry) is investigated. 
[70] Damper bars influence on the synchronous machine steady state operating Proc., Momag, Joao PessoaParaiba, 08/2012 TANNOIAMAMURA Bruno, LE MENACH Yvonnick, TOUNZI Abdelmounaïm, SADOWSKI Nelson, GUILLOT Eilin 
[71] Stochastic post processing calculation of iron losses Application to a PMSM EPNC 2012, Croatie, Pula, 06/2012, Abstract FRATILA Mircea, RAMAROTAFIKA Rindra, BENABOU Abdelkader, CLENET Stéphane, TOUNZI Abdelmounaïm 
This paper investigates the stochastic postprocessing calculation of iron losses. Twenty eight slinky stator samples are investigated in term of iron losses variability, and stochastic model is then developed to take account of this variability. The Multivariate Gaussian distribution (MG) of the iron losses parameters is thereafter used for stochastic postprocessing calculation of the density of iron losses of a PMSM, with Monte Carlo simulation method. This approach allows one to take in consideration the magnetic core variability from the iron loss point of view, for the design of electrical machine. 
[72] Improved iron loss calculation for noncentered minor loops EPNC 2012, Croatie, Pula, 06/2012, Abstract FRATILA Mircea, BENABOU Abdelkader, TOUNZI Abdelmounaïm 
Pulse width modulated (PWM) inverters are widely used to feed induction motors for variable speed applications. The use of PWM power supplies induces additional magnetic losses in the magnetic circuit of the electrical machine. In this paper a novel analytical approach is presented to account for these losses. The methodology proposed here consists in identifying the analytical method with a static Preisach hysteresis model. The Preisach model was validated by comparing it with measurements obtained from an Epstein frame. Then, the results obtained with this approach were compared with a basic analytical method that is widely used. 
[73] Nonlinear modeling of magnetization loss in permanent magnets Intermag 2012, Vancouver, Canada, 05/2012, Abstract FRATILA Radu, BENABOU Abdelkader, TOUNZI Abdelmounaïm, MIPO JeanClaude 
Permanent magnets (PM) are widely used in various types of electrical machines and devices. However, they can be subjected to magnetization loss depending on the operating conditions. Therefore, when modeling devices involving PM, it can be useful to use an accurate description of the magnetic behavior law of the PM in order to predict any demagnetization that will impact their performances. Usually, the Finite Elements (FE) approach is used in order to describe with accuracy the magnetic operational conditions of the PM devices. These conditions depend of the magnet temperature and also of the spatial and temporal harmonics of the magnetic field developed in the PM [1].
The magnetic behavior law of PM is generally assumed to be linear. The real demagnetization curve can also be taken into account by implementing a nonlinear behavior law. Nevertheless, the magnetization loss is not always taken into account, especially when the operating point of the PM reaches the knee point. Therefore, in this communication, a model describing the modification of the behavior law of a PM is described in this condition. The model is implemented in a FE calculation code with an example of application.

[74] Numerical modeling of an electromagnetic micromotor using 3DFEM ICEM 2012, Marseille, 01/2012 MOENECLAEY J, TOUNZI Abdelmounaïm 
[75] Study of Synchronous Generator Static Eccentricities – FEM Results and Measurements ICEM 2012, Marseille, FRANCE, 01/2012 TANNOIAMAMURA Bruno, LE MENACH Yvonnick, TOUNZI Abdelmounaïm, SADOWSKI Nelson, GUILLOT Eilin 
[76] Investigation of the Numerical Error Influence in a 3D FE PostProcessing Iron Loss Calculation Procedure ISEM2011 Napoli, Italy, pages. 229230, 09/2011, Abstract FRATILA Mircea, BENABOU Abdelkader, TOUNZI Abdelmounaïm, RAMAROTAFIKA Rindra, DESSOUDE Maxime 
Iron losses during electromechanical energy conversion devices are crucial in electrical machine design. They are often determined using an a posteriori method that can lead to more or less important deviations with regard to the experiment. These deviations can be explained both by the lack of accuracy of the iron loss model but also by the numerical modeling procedure and hypothesis. This paper investigates the impact of the numerical error on the evaluation of iron losses in an electrical machine stator. 
[77] Eddy current effects on the steady state operating of a nonsalient pole synchronous machine The 15th International Symposium on Applied Electromagnetics and Mechanics, 09/2011, Abstract TANNOIAMAMURA Bruno, LE MENACH Yvonnick, TOUNZI Abdelmounaïm, SADOWSKI Nelson, GUILLOT Eilin 
This paper deals with the study of the effects of the eddy current induced in the
damper bars of a synchronous machine at steady state. A nonsalient pole synchronous
machine, with damper bars, is modelled in magnetostatic and magnetodynamic cases taking
into account the end rings. The time variation of the no load back emf is calculated in both
cases and the results are compared to measurements to highlight the effects of the induced
currents. 
[78] Investigation of the impact of rotational losses in a threephase transformer ISEF 2011 Madeira, Portugal, 09/2011, Abstract FRATILA Mircea, BENABOU Abdelkader, TOUNZI Abdelmounaïm, DESSOUDE Maxime 
When ferromagnetic materials are subject to a time varying magnetic flux, energy dissipation, known as iron loss, occurs within the material. These losses are often determined using an a posteriori method that can lead to more or less important deviations depending on the used method. In electrical machines, one has to take into account the vectorial behavior of the magnetic field that can lead to additional losses. In this work, two iron loss calculation approaches, implemented in a post processing of a 3D finiteelement analysis, are used in order to investigate the impact of rotational losses in a threephase transformer. 
[79] Eddy current Losses in Permanent Magnets of High Speed Synchronous Generators Electromotion2011, Istamboul, Turquie, 01/2011 MARTIN Floran, BERNARD Nicolas, ZAÏM Mohamed El Hadi, TOUNZI Abdelmounaïm, FRATILA Radu 
[80] Study of Synchronous Generator eccentricities
using analytical approach and FEM ICEM 2010  International Conference on Electrical Machines, Rome, Italy, 09/2010, Abstract TANNOIAMAMURA Bruno, LE MENACH Yvonnick, TOUNZI Abdelmounaïm, SADOWSKI Nelson, GUILLOT Eilin 
This paper deals with the study of rotor turbogenerator
eccentricities using an analytical approach and FEM.
First, we present the cases of eccentricities and the method,
based on the measure of the flux density in the airgap, used to
detect the faults. Both models, the analytical approach and the
numerical one are then introduced. Using these models, static,
dynamic and combined eccentricities are studied at no load. The
results obtained by both approaches are compared and the
limits of the analytical model are underlined relatively to the
effect of the non linearity of the magnetic material
characteristic and the induced eddy currents. 
[81] Reduction of force ripples in PM planar actuator ICEM 2010  International Conference on Electrical Machines, Rome, Italy, 92010, 09/2010 KREBS Guillaume, TOUNZI Abdelmounaïm, PIRIOU Francis, PAUWELS Brecht, WILLEMOT Dirk 
[82] Evaluation of the overlapping finite element method for taking into account very small displacements IGTE, 09/2010 KREBS Guillaume, TOUNZI Abdelmounaïm, HENNERON Thomas 
[83] Study of Interturn Short Circuit in Rotor Windings of a
Synchronous Generator Using FEM CEFC 2010  Conference on Electromagnetic Field Computation, Chicago, USA, 05/2010, Abstract TANNOIAMAMURA Bruno, LE MENACH Yvonnick, TOUNZI Abdelmounaïm, SADOWSKI Nelson, GUILLOT Eilin 
This paper deals with the study of interturn short
circuits in rotor windings of a synchronous generator using FEM.
Results obtained for magnetostatic and magnetodynamic cases
are presented and discussed. 
[84] Stochastic Modeling of the PullIn Voltage in a MEMS Beam Structure CEFC 2010, Chicago, USA, 01/2010 BOLONI Francisc, BENABOU Abdelkader, TOUNZI Abdelmounaïm 
[85] Study of Static and Dynamic Eccentricities of a Synchronous Generator Using 3D FEM Compumag 2009, Florianopolis, Brésil, 11/2009, Abstract TANNOIAMAMURA Bruno, LE MENACH Yvonnick, TOUNZI Abdelmounaïm, SADOWSKI Nelson, GUILLOT Eilin 
The paper deals with the study of static and dynamic rotor eccentricities of a synchronous generator using 3D FEM. First, both eccentricity cases are introduced as well as the used approach. Then, the model of the structure, based on the vector potential formulation is presented. Results obtained for magnetostatic case related to both defects and their combination are presented and discussed. The saturation effect is highlighted. 
[86] Force Computation in a MEMS Structure Using Adaptive Mesh Refinement Compumag 2009, Florianopolis, Brésil, 11/2009 BOLONI Francisc, BENABOU Abdelkader, KREBS Guillaume, TOUNZI Abdelmounaïm 
[87] Evaluation of the perturbation method for iterative calculations in 2D finite
element analysis Conférence ISEF 2009, Arras, France, 09/2009, Abstract DAUSSY Benoit, LAVAL Damien, BENABOU Abdelkader, TOUNZI Abdelmounaïm 
The perturbation method is a simple way to study local details while avoiding a fine mesh of the whole system. In this paper, we present the influence of the extracted region size, i.e. the region including the perturbation, when performing iterative calculations with the perturbation technique. This influence is illustrated using a simple example. 
[88] Direct Torque Control Strategy for a Variable Speed Wind Energy Conversion System Associated to a Flywheel Energy Storage System Second International Conference on Developments in eSystems Engineering (DESE), Abu Dhabi, UAE, 01/2009 IDJDARENE Kassa, REKIOUA Djamila, REKIOUA Toufik, TOUNZI Abdelmounaïm 
[89] General Overview of Integrated Linear Rotary Actuators accepted to be presented at ICEM 2008, 09/2008, Abstract KREBS Guillaume, TOUNZI Abdelmounaïm, PAUWELS Brecht, WILLEMOT Dirk 
Specific electromagnetic actuators are now widely used. Several designs exist and depend on the aimed application. The goal of this paper is to present a general overview of the integrated linear and rotary actuators (called also ZTheta actuators). First, the different ways to achieve this movement are given. Then, we present the design of the actuators actually studied or constructed. At last, a summary table of the actuators is drawn up. 
[90] Study of a current excited vernier reluctance machine ICEM 2008, 09/2008 TOUNZI Abdelmounaïm, RAMDANE Brahim, ZAÏM Mohamed El Hadi 
[91] DESIGN OF A LINEAR ELECTROMAGNETIC MICROACTUATOR EMSA 2008, European Magnetic Sensors & Actuators Conference, 07/2008, Abstract REMY Ghislain, TIERCELIN Nicolas, TOUNZI Abdelmounaïm, PERNOD Philippe 
This paper focuses on the design of a new type of linear electromagnetic MEMS. High thrust density is generated using the current/magnet/iron interaction. The proposed innovation is based on flexible beams, serving as a guidance system and as a closing magnetic circuit. The fabrication process is defined and 2DFinite Element Analysis is performed in order to maximize the thrust generation under low current values and small actuator sizes. 
[92] Analytical Calculation of Interaction Forces Between Unaligned Permanent Magnets EMSA (European Magnetic Sensors and Actuators Conference), Caen, pages. 88, 07/2008 JANSSEN J.L.G., PAULIDES J.J.H., LOMONOVA Elena, BOLONI Francisc, TOUNZI Abdelmounaïm 
[93] Accounting for linear movement in 3D FEM using the overlapping method accepted to be presented at EPNC 2008, 07/2008, Abstract KREBS Guillaume, CLENET Stéphane, ABAKAR Ali, TOUNZI Abdelmounaïm, PIRIOU Francis 
In this paper, movement strategy, using the overlapping method, is studied. Nonconforming tetrahedral meshes and planar displacements are considered. The first part of this paper is devoted to the presentation of the FEM formulation. In the second part, the overlapping method is described in the case of planar movements. At last, results are given and discussed. 
[94] Impact of currents on the detent force of a PMSLM EPNC 2008, 20th Symposium on Electromagnetic Phenomena in Nonlinear Circuits, 07/2008, Abstract REMY Ghislain, GOMAND Julien, TOUNZI Abdelmounaïm, BARRE PierreJean 
This paper presents an analysis of the force ripples of a permanent magnet linear synchronous motor (PMLSM) with regards to the current magnitude. This approach takes into account the influence of the currents in the generation of the force ripples. A 2DFinite Element Analysis is developed, and experimental results on a test bench validate the proposed model. 
[95] 3D Study of an Electrostatic MEMS
device taking account of the active part displacement CEFC 2008, 05/2008, Abstract BOLONI Francisc, KREBS Guillaume, HENNERON Thomas, TOUNZI Abdelmounaïm 
The analysis of microelectromechanical systems (MEMS) requires to take into account both electric and mechanical phenomena. An iterative FEM approach, which involves the computation of the electrostatic field and the displacement of the moving part, is presented. The maximum displacement allows computing the pullin voltage. 
[96] Study of an electromagnetic gearbox involving two PM synchronous machines using 3DFEM Intermag’08, Madrid, Espagne, 05/2008, Abstract AUBERTIN Mathieu, TOUNZI Abdelmounaïm, LE MENACH Yvonnick 
Recently, magnetic gearboxes know a real interest and have been the subject of many studies due to their high performances. However, their principle is often issue from the mechanical gearbox one and then they do not offer any degree of freedom. In this paper, we propose a magnetic gearbox constituted of two electromagnetic structures. This introduces two degrees of freedom and then the system can also insure clutch operating. First, the operating of the system is described. Then,
its behavior is studied using a numerical model based on 3DFEM.
Different results given by 3D analysis are presented. 
[97] Design of a linear electromagnetic microactuator EMSA 2008, Caen, France, 01/2008 REMY Ghislain, TIERCELIN Nicolas, TOUNZI Abdelmounaïm, PERNOD Philippe 
[98] Modeling of a linear and rotative permanent magnet actuator Intermag 2008, Madrid, Espagne, 01/2008 KREBS Guillaume, TOUNZI Abdelmounaïm, PAUWELS Brecht, WILLEMOT Dirk, PIRIOU Francis 
[99] Control of a PM linear actuator using Hall effect sensors LDIA 2007, 6th International Symposium on Linear Drives for Industrial Applications, 09/2007, Abstract KREBS Guillaume, TOUNZI Abdelmounaïm, PAUWELS Brecht, WILLEMOT Dirk, PIRIOU Francis 
Due to industrial needs, small stroke actuators present a growing interest. Generally, high acceleration, robustness and low manufacturing costs are frequently required. Today, improvements in the magnetic material as rare earth magnets or iron powder permit to design very compact actuators.
To reach high performances, the actuator has to be controlled. This can be achieved using the last control capabilities (dsp, fpga...).However, this often needs sensors which increase the costs.
In this paper, we deal with the simulation of the control of a PM linear small stroke actuator with non mechanical sensors. First, we present the actuator features. Then we introduce the simulation model based on the reluctance network model. To reach the information related to the position of the moving part, we use Hall effect sensors. In a third part, we show the placements of the sensors. Lastly, we introduce the control strategy and give some simulation results.

[100] Impact of Permanent Magnet Field on Inductance Variation of a PMLSM EPE 2007, 12th European Conference on Power Electronics and Applications, Aalborg, Denmark, 09/2007, URL, Abstract GOMAND Julien, REMY Ghislain, TOUNZI Abdelmounaïm, BARRE PierreJean, HAUTIER JeanPaul 
Analytical models of Surface Mounted Permanent Magnet Linear Synchronous Motors are generally
presented with constant inductances. However, the impact of powerful rareearth PMs in the saturation
phenomena cannot be neglected anymore. In this paper, a new nonlinear model of PMLSM
inductances is suggested. This model is defined as a function of the current value as well as of the
magnet position. So, an analytical study, a finiteelement analysis and experimental results are
presented and confronted. 
[101] Finite Element Analysis of a PMLSM (part 1)  Meshing techniques and thrust computations LDIA 2007, 6th International Symposium on Linear Drives for Industrial Applications, 09/2007, Abstract REMY Ghislain, KREBS Guillaume, TOUNZI Abdelmounaïm, BARRE PierreJean 
Nowadays, numerical approaches are widely used to model electrical machines. Among them, the 2Dfiniteelement method (2DFEM) is the most frequently encountered to study the behaviour of electromagnetic devices. Indeed, it takes into account both the geometry of the system and the non linearity ofthe magnetic material. Then, it offers accurate results with regard to the real system. To obtain fast optimizations of electric machine designs, a low number of mesh elements is required in order to limit the computation time.
However, this generally undermines the accuracy of the results. In the case of global electrical characteristics such as fluxes or electromotive forces, the quality of the mesh does not affect the result greatly. This is not the case of the noload torque or force. Indeed, accurate calculations are highly dependent on the method used to perform them and on the mesh quality of the modelled part of the device.
Hence, one has to take care of these parameters to reach useful results, especially given that the noload torque or force are generally very difficult to obtain from measurements. These difficulties are increased in the case
of the permanent magnet linear synchronous machines (PMLSM) as the no load force is composed of two parts, the cogging and the extremity ones.
In this paper, in order to accurately calculate the noload force using the FEM, we propose a meshing procedure of a PMLSM and a comparison of force formulations.
In the first part, we introduce the formulations that are generally used to calculate the forces in the FEM codes.
The problem of the force accuracy calculation induced by the meshing size is considered.
The second part of the paper is devoted to the mesh design of a PMLSM. We define an elementary part of the
PMLSM to be modelled and the main geometrical characteristics are explained. The results obtained from different meshes are analyzed. Some comparisons are carried out on the effectiveness of force formulations, the accuracy of the results and the time calculations.
In the last part, the simulation results are compared to those obtained on an experimental bench 
[102] Finite Element Analysis of a PMLSM (part 2)  Cogging force and endeffect force calculations LDIA 2007, 6th International Symposium on Linear Drives for Industrial Applications, 09/2007, Abstract REMY Ghislain, KREBS Guillaume, TOUNZI Abdelmounaïm, BARRE PierreJean 
Linear machines are more and more studied and used in industry applications. Nowadays, such machines are available with synchronous, asynchronous and variable reluctance electromechanical conversion. Following the aimed application, Permanent Magnet Linear Synchronous Motors (ironcore PMLSM) are widely used in applications which need very high performances in terms of dynamics, high speed and accurate positioning. This is especially due to the utilisation of rare earth permanent magnets. Hence, these structures have a high power to weight ratio, which makes them attractive in the case of embarked applications. However, as for their rotary counterparts, the use of permanent magnets, and even more rare earth ones, induces drawbacks. Indeed, they suffer from cogging forces due to the presence of slots in the primary. Furthermore, the extremities of the short primary induce endeffect forces. Both forces compose the detent force and lead to vibrations and issues in achieving efficient control at low speeds without specific compensations.
Today, the finiteelement method (FEM) is widely used to design electrical machines. This numerical approach takes account of the real geometry and the non linearity of the magnetic material, which leads to accurate results with regard to the real system. It can be helpful to shape the noload PMSLM forces and then to constitute a prevailing tool to optimize such PMSLM design.
The studies of the cogging force for electrical machines (rotary and linear) are numerous. But the investigations on the study and the minimization of the endeffect forces are limited. Besides, their physical origin is not well known and the solutions given to limit it are often issued from experimental tests.
In this paper, we propose to use the finiteelement method to study the cogging forces and the endeffect forces that compose the noload detent forces. Influent geometrical parameters of a particular PMLSM are considered. Hence, once the geometrical parameters inducing the endeffect force are well known, it would be easier to adapt them to reduce it.
In the first part, we present the studied PMLSM and introduce the geometries utilised to reach both forces. A special meshing technique is introduced.
The second part is devoted to analyse the noload forces. As a consequence, the ripple force due only to the reluctance variation of the airgap is studied first. Then, identically, we analyse the force introduced by the extremities. These results are compared to measurements on an experimental bench.
In the last part, the influence of geometrical variables on both forces is presented and discussed. 
[103] Two cogging force minimization applied to a linear actuator ICEM06, 09/2006, Abstract KREBS Guillaume, TOUNZI Abdelmounaïm, PAUWELS Brecht, WILLEMOT Dirk, PIRIOU Francis 
Permanent magnet actuators, widely used, often suffer from torque or force ripples. In this paper, we intend to reduce the cogging
force of a PM linear actuator using two approaches. The first one consists on an optimisation of the teeth and magnet sizes. The
second deals with the use of a supplementary steel piece in order create an opposite cogging force. The first calculations are achieved
using 2DFEM. Then 3DFEM is used to validate the results. 
[104] Design and study of a linear actuator using the 3D FEM EPNC06, 06/2006, Abstract KREBS Guillaume, TOUNZI Abdelmounaïm, PAUWELS Brecht, WILLEMOT Dirk, PIRIOU Francis 
The electromagnetic actuators for industrial processes have nowadays to present very specific features. To lead to a
prototype and to study it with high accuracy, we use today partially or completely numerical methods. The purpose of
this paper is to present the design and the study of a linear actuator. First, we present the structure of the actuator
and its characteristics. The second part is devoted to describe the numerical approach. Lastly, we give the main results
of the study and compare them to experimental data obtained from a prototype. 
[105] A locked step procedure to take into account two different movements in the 3DFEM EMF06, 06/2006, Abstract KREBS Guillaume, TOUNZI Abdelmounaïm, PAUWELS Brecht, WILLEMOT Dirk, PIRIOU Francis 
In the field of numerical modeling, applications with complex displacements are more and more met. The present paper deals
with a procedure which permits to take into account two movements in the finite element method. Using the locked step method,
it is possible perform both XY and Xq displacements. The procedure developed is explained and a 3D simple example is studied,
both in magnetostatic and magnetodynamic, to show the validity of the proposed method. 
[106] Vector control of an induction generator used in an autonomous variable speed windmill ICMS05, 11/2005 REKIOUA Djamila, IDJDARENE Kassa, REKIOUA Toufik, TOUNZI Abdelmounaïm 
[107] FiniteElement Analysis of NonSinusoidal Electromotive Force in a Permanent Magnet Linear Synchronous Motor LDIA 2005, The 5th International Symposium on Linear Drives for Industry Applications, Awaji Yumebutai, Hyogo, Japan, 09/2005, Abstract REMY Ghislain, TOUNZI Abdelmounaïm 
In the case of permanent magnet linear synchronous motors (PMLSM), knowledge of the electromotive force (emf) is necessary to achieve accurate control. However, it is often difficult to obtain it experimentally. As a consequence, this paper deals with the study of the nonsinusoidal emf of a PMLSM using the FiniteElement Method (FEM). Two potential formulations are used to consider several cases. Then, for the same accuracy, the computation times are compared. The results of the FEM are compared to those given by the measurements from a test bench composed of a Siemens LIMES400/120 linear motor and of a dSPACE DS1005 realtime controller board. Finally, the effectiveness and the limits of the FE Analysis will be discussed. 
[108] Study of a PM planar actuator using a permeance network model and the 3DFEM COMPUMAG05, 09/2005, Abstract KREBS Guillaume 
Specific actuators are now widely used. The design and study of such a converter must be carried out using specific
models. This paper deals with the study of a permanent magnet planar actuator with Multiple Degrees of Freedom (MdoF).
A 3D permeance network model is used to design the actuator and study its performance. The 3DFEM is also used to
investigate more accurately the prototype behavior. A prototype of the actuator has been built. Results, given by
both models are shown and compared with those obtained experimentally. 
[109] FiniteElement Analysis of NonSinusoidal Electromotive Force in a Permanent Magnet Linear Synchronous Motor LDIA 2005, The 5th International Symposium on Linear Drives for Industry Applications, Awaji Yumebutai, Hyogo, Japan, 09/2005, Abstract BARRE PierreJean, PIRIOU Francis, HAUTIER JeanPaul 
In the case of permanent magnet linear synchronous motors (PMLSM), knowledge of the electromotive force (emf) is necessary to achieve accurate control. However, it is often difficult to obtain it experimentally. As a consequence, this paper deals with the study of the nonsinusoidal emf of a PMLSM using the FiniteElement Method (FEM). Two potential formulations are used to consider several cases. Then, for the same accuracy, the computation times are compared. The results of the FEM are compared to those given by the measurements from a test bench composed of a Siemens LIMES400/120 linear motor and of a dSPACE DS1005 realtime controller board. Finally, the effectiveness and the limits of the FE Analysis will be discussed. 
[110] Study of a PM planar actuator using a permeance network model and the 3DFEM COMPUMAG05, 09/2005, Abstract HENNERON Thomas, TOUNZI Abdelmounaïm, PAUWELS Brecht, WILLEMOT Dirk 
Specific actuators are now widely used. The design and study of such a converter must be carried out using specific
models. This paper deals with the study of a permanent magnet planar actuator with Multiple Degrees of Freedom (MdoF).
A 3D permeance network model is used to design the actuator and study its performance. The 3DFEM is also used to
investigate more accurately the prototype behavior. A prototype of the actuator has been built. Results, given by
both models are shown and compared with those obtained experimentally. 
[111] Determination of magnetic characteristics of a variable reluctance machine excited by DC and AC currents EPNC2004, 06/2004 TAÏBI Soufiane, TOUNZI Abdelmounaïm, PIRIOU Francis 
[112] Identification numérique des paramètres d’un MSLAP Numelec2003, 10/2003 TOUNZI Abdelmounaïm, ASKOUR Rachid, DUMETZ Eric, PIRIOU Francis 
[113] Analysis of supplementary conditions for a smooth torque running of heteropolar excited Vernier Reluctance Machines ISEF 2003, 01/2003 TAÏBI Soufiane, HENNERON Thomas, TOUNZI Abdelmounaïm 
[114] Diphase modeling of a current excited Vernier Reluctance Machine ICEM2002, 08/2002 EL AIMANI Salma, TAÏBI Soufiane, TOUNZI Abdelmounaïm 
[115] Simulation of an induction machine wind generation system based on an energetic macroscopic representation ICEM2002, 08/2002 TOUNZI Abdelmounaïm, BOUSCAYROL Alain, DELARUE Philippe, BROCART Charles, TRITSH JeanBernard 
[116] Study of Head Winding Effects in a Switched Reluctance Machine Compumag2001, 07/2001 SOFIANE Yamina, TOUNZI Abdelmounaïm, PIRIOU Francis, LIESE Manfred 
[117] Modelling and Study of a Saturated PM Variable Reluctance Generator associated to a PWM Rectifier EPNC2000, pages. 7780, 09/2000 HAOUARA Ilhem, TOUNZI Abdelmounaïm, PIRIOU Francis 
[118] Design and study of a variable reluctance machine excited by a three phase current in the stator ICEM2000, Vol. 3, pages. 13941398, 08/2000 TAÏBI Soufiane, TOUNZI Abdelmounaïm, PIRIOU Francis 
[119] Comparison between FEM and Park’s model to study the control of an induction machine ICEM2000, Vol. 1, pages. 548552, 08/2000 BRULE Stéphane, TOUNZI Abdelmounaïm 
[120] Direct Torque Control of a wind driven induction generator connected to the grid through converters Electrimacs99, pages. 319324, 09/1999 BRULE Stéphane, TOUNZI Abdelmounaïm, PIRIOU Francis 
[121] Comparison of induction machine Park’s models using parameters issue from FEM and from experimental tests ICEM98, Vol. 1, pages. 308313, 09/1998 BRULE Stéphane, TOUNZI Abdelmounaïm, PIRIOU Francis 
[122] Study and vector control of a doubly slotted reluctance machine fed by a PWMVSI ICEM98, Vol. 3, pages. 21372142, 09/1998 HAOUARA Ilhem, TOUNZI Abdelmounaïm, PIRIOU Francis 
[123] Numerical modeling to study the vector control of an excited reluctance machine CEFC98, pages. 228, 06/1998 HAOUARA Ilhem, TOUNZI Abdelmounaïm, PIRIOU Francis 
[124] Design and optimisation of an excited reluctance generator using field computation COMPUMAG97, pages. 117118, 11/1997 HAOUARA Ilhem, TOUNZI Abdelmounaïm, PIRIOU Francis 
[125] Study of a variable reluctance generator for wind power conversion EPE97, Vol. 2, pages. 631636, 09/1997 HAOUARA Ilhem, TOUNZI Abdelmounaïm, PIRIOU Francis 
[126] Vector control of an autonomous induction generator connected to a PWM rectifier EPE97, Vol. 2, pages. 711716, 09/1997 COLLIEZ Claire, TOUNZI Abdelmounaïm, PIRIOU Francis 
[127] Study of an induction machine using Park’s model and Finite Element Method ICEM96, Vol. 2, pages. 2429, 09/1996 LEPLAT PierreMarie, TOUNZI Abdelmounaïm, CLENET Stéphane, PIRIOU Francis 
[128] Study of an autonomous induction generator connected to a PWM rectifier Electrimacs, Vol. 3, pages. 10891094, 09/1996 LEPLAT PierreMarie, TOUNZI Abdelmounaïm, CLENET Stéphane, PIRIOU Francis 
[129] Numerical modelling of an induction generator connected to a PWM voltage source inverter EPNC96, pages. 4348, 06/1996 LEPLAT PierreMarie, CLENET Stéphane, TOUNZI Abdelmounaïm, PIRIOU Francis 
[130] Field oriented control of a smooth stator VRM. Comparison between two models: with and without dampers IMACSTC1, pages. 507512, 09/1993 TOUNZI Abdelmounaïm, MEIBODYTABAR Farid, SARGOS FrançoisMichel 
[131] ’Modelling and digital simulation of the field oriented control of a Reluctance Machine supplied by a PWMVSI ICEM92, Vol. 2, pages. 677681, 09/1992 TOUNZI Abdelmounaïm, MEIBODYTABAR Farid, RABIH Amine, SARGOS FrançoisMichel 
[132] Commande vectorielle d’une machine à réluctance variable à stator lisse alimentée par un onduleur à MLI’ 7ème colloque international sur les moteurs pas à pas, pages. 7886, 07/1992 TOUNZI Abdelmounaïm, MEIBODYTABAR Farid, SARGOS FrançoisMichel 
ACN Conférence nationale avec acte 
[1] Investigation des pertes dans les plateaux et doigts de serrage dans les machines de fortes puissances SGE 2023, Lille, France, 07/2023, URL MOHAND OUSSAID Walid, TOUNZI Abdelmounaïm, ROMARY Raphaël, BENABOU Abdelkader, BOUGHANMI Walid, LALOY Daniel 
[2] Détermination du profil de dégradation magnétique sur le bord d’un acier électrique poinçonné SGE 2023, Lille, France, 07/2023, URL HELBLING Hugo, BEKIR Wissem, VAN GORP Adrien, BENABOU Abdelkader, MONTAGNE Alex, MESSAL Oualid, TOUNZI Abdelmounaïm, BOUGHANMI Walid, LALOY Daniel 
[3] Etude expérimentale de l’effet du compactage hétérogène sur les propriétés d’un circuit magnétique SGE 2021, Nantes, France, 07/2021 HELBLING Hugo, BENABOU Abdelkader, VAN GORP Adrien, EL YOUSSEF Mohamad, TOUNZI Abdelmounaïm, BOUGHANMI Walid, LALOY Daniel 
[4] Influence de l’angle de charge sur les forces radiales et le couple avec un bon compromis couple  bruit sur un moteur brushless de faible puissance SGE2021, 07/2021 UYGUN Emre, HECQUET Michel, DEPERNET Daniel, LANFRANCHI Vincent, BRUNO Serge, TOLLANCE Thierry, TOUNZI Abdelmounaïm 
[5] Impact d’encoches fictives sur les harmoniques de forces radiales et le couple de MSRel assistées d’aimants de faible puissance. SGE2021, 07/2021 TOLLANCE Thierry, HECQUET Michel, TOUNZI Abdelmounaïm, GILLON Frédéric 
[6] Etude comparative des harmoniques de forces radiales et du couple de machines synchrones et synchroréluctantes assistées d'aimants Symposium de Génie Electrique 2018 (SGE'18), 13 Juillet 2018, Nancy, 07/2018, Abstract TOLLANCE Thierry, HECQUET Michel, GILLON Frédéric, TOUNZI Abdelmounaïm 
L’objectif de ce papier concerne la problématique de dimensionnement de machines synchrones de faible puissance sous contraintes de diamètre extérieur, de couple et vitesse, de courant et de bruit émis. Une machine synchrone à aimants en surface avec un bobinage sur dents est comparée à deux machines synchroréluctantes avec ou sans assistance d’aimants avec le même type de bobinage. L’objectif visé est de réduire le cout en essayant de conserver les mêmes performances sous contraintes. Des simulations éléments finis 3D permettent d’évaluer et de comparer les différentes structures proposées ainsi que des résultats expérimentaux.
Motsclefs : machine synchrone à aimants, machine synchroréluctante, harmoniques de couple, harmoniques de forces radiales. 
[7] Comparaison des performances de machines à réluctance variable 8/6 à flux radial et axial SGE2018, 07/2018 AYDOUN Racha, PARENT Guillaume, TOUNZI Abdelmounaïm, LECOINTE JeanPhilippe 
[8] Plateforme d'Optimisation Topologique pour Dispositifs Electromagnétiques Numelec2017, 11/2017 DELHAYE Florent, MOHAMODHOSEN Bilquis, GILLON Frédéric, TOUNZI Abdelmounaïm 
[9] Caractérisation d’un alternateur synchrone avec aimants de compensation de fuite magnétique SGE2016, 06/2016, Abstract KORECKI Julien, BENDALI Sofiane, AMMAR Aymen, TOUNZI Abdelmounaïm, LALOY Daniel 
L’ajout d’aimants de compensation dans les espaces interpolaires de machines synchrones à pôles saillants permet d’atténuer les flux de fuites inducteur. Un prototype utilisant cette technique, dimensionné et construit, est étudié dans cette communication. L’effet de la compensation est d’abord illustré. Ensuite, le prototype est étudié en utilisant un modèle numérique. Différents points de fonctionnements sont simulés et les résultats sont comparés a des mesures expérimentales tant en grandeurs globales que locales. 
[10] Détermination des pertes harmoniques dans les aimants permanents. Cas des machines synchrones à aimants déposés Numelec 2015, SaintNazaire, France, 06/2015 ZAÏM Mohamed El Hadi, BOUGHANMI Walid, BENABOU Abdelkader, TOUNZI Abdelmounaïm, DANG T.N.L. 
[11] Direct Torque Control optimization with loss minimization of induction motor CISTEM2014, 11/2014 TAZERART Farid, TAIB N, REKIOUA Toufik, REKIOUA Djamila, TOUNZI Abdelmounaïm 
[12] Commande vectorielle d'une génératrice asynchrone en fonctionnement autonome avec batteries de stockage CIER2013, 07/2013 IDJDARENE Kassa, REKIOUA Djamila, REKIOUA Toufik, TOUNZI Abdelmounaïm 
[13] Une procédure pour simuler deux rotations indépendantes par la méthode Eléments Finis en 3D EF 2009 Compiègne, 09/2009 AUBERTIN Mathieu, HENNERON Thomas, TOUNZI Abdelmounaïm 
[14] Analyse du Fonctionnement d’une Eolienne Basée sur une Génératrice Asynchrone en Fonctionnent Autonome ICEL2005, 11/2005 IDJDARENE Kassa, REKIOUA Djamila, TOUNZI Abdelmounaïm 
[15] Etude en génératrice d’une Machine à Réluctance Variable à Double Saillance excitée EF 2005, 09/2005 TOUNZI Abdelmounaïm, PIRIOU Francis 
[16] Dimensionnement et caractérisation d’une machine à réluctance variable vernier excitée par un système triphasé au rotor EF2005, 09/2005 TOUNZI Abdelmounaïm, PIRIOU Francis 
[17] Etude en génératrice d’une Machine à Réluctance Variable à Double Saillance excitée EF2003, 11/2003 TOUNZI Abdelmounaïm, PIRIOU Francis 
[18] Modèles simplifiés des effets électromagnétiques, thermiques et mécaniques dus à la fréquence Journée GDR SDSE  Lyon, 12/2001 LEFEVRE Y., TOUNZI Abdelmounaïm, BIDAN P., LAGONOTTE P., HECQUET Michel 
[19] Utilisation d’une procédure analytique associée à un modèle numérique pour la détermination des pertes fer d’une MRVDS (SRM) EF2001, pages. 379384, 11/2001 SOFIANE Yamina, TOUNZI Abdelmounaïm, PIRIOU Francis 
[20] Etude de générateurs électriques pour la conversion de l’énergie électrique Journées francophones sur l’énergie éolienne, pages. 3543, 11/1999 TOUNZI Abdelmounaïm 
[21] Etude de la machine asynchrone avec un modèle diphasé tenant compte de la saturation et des effets croisés EF99, pages. 309314, 03/1999 BRULE Stéphane, TOUNZI Abdelmounaïm, PIRIOU Francis 
[22] Etude de MRV excitées pour des applications en entraînement direct CEMD99, pages. 8388, 02/1999 TAÏBI Soufiane, HAOUARA Ilhem, TOUNZI Abdelmounaïm, PIRIOU Francis 
[23] Utilisation de l’éolien dans la production de l’énergie électrique Journées Electrotechniques du Club EEA, 01/1999 TOUNZI Abdelmounaïm 
[24] Production d’énergie décentralisée par un système Machine à Réluctance Variable  Convertisseurs statiques SEE, 03/1998 HAOUARA Ilhem, TOUNZI Abdelmounaïm, PIRIOU Francis 
[25] Etude d’une génératrice non conventionnelle pour une application en éolienne Congrès International en IEEA, pages. 7074, 12/1997 HAOUARA Ilhem, TOUNZI Abdelmounaïm, PIRIOU Francis 
AP Autre publication 
[1] Utilisation de l’éolien dans la production de l’énergie électrique Revue 3EI, pages. 2438, 03/2000 TOUNZI Abdelmounaïm 
BV Brevet 
[1] ROTOR POUR MOTEUR ASYNCHRONE A CAGES MULTIPLES Brevet européen, N° de Brevet. EP4020777, 09/2023 TOLLANCE Thierry, GEORGEAULT Ronan, MATEOS Raphaël, BRION Pierre, MARAULT Jérôme, GILLON Frédéric, HECQUET Michel, TOUNZI Abdelmounaïm 
HDR Habilitation à diriger des recherches 
[1] Contribution à la conception et à la modélisation de machines électriques. Application aux machines à réluctance variable à deux circuits HDR, 12/2004 TOUNZI Abdelmounaïm 
INV Conférence invité 
[1] Accounting of different movements in the study of electomechanical devices using 3D FEM MOMAG 2008, 09/2008 TOUNZI Abdelmounaïm, LE MENACH Yvonnick, HENNERON Thomas, KREBS Guillaume, CLENET Stéphane 
OP Ouvrage pédagogique 
[1] CAO en génie électrique Techniques de l'Ingénieur, N°. D3585 v2, 08/2021, URL, Abstract TOUNZI Abdelmounaïm, BENABOU Abdelkader, GILLON Frédéric 
Cet article brosse un panorama de la CAO en génie électrique. Une vision globale de la conception est d’abord introduite avant de présenter le processus itératif du prototypage virtuel avec quelquesunes des approches de modélisation classiquement utilisées pour évaluer les performances des convertisseurs électriques. L’accent est mis sur la nécessité de tenir compte de l’environnement d’utilisation du dispositif à concevoir et des différentes physiques mises en jeu ainsi que sur les stratégies d’optimisation types dans le processus de conception. Un éclairage est apporté sur les effets des procédés de fabrication, notamment pour distinguer le prototype virtuel du prototype réel. Enfin, la présentation de quelques axes de développements futurs dans le domaine de la CAO clôture l’article. 
[2] Variable Reluctance Machines: Modeling and Control Control of Nonconventional Synchronous Motors,  sous la direction de JeanPaul Louis (Wiley), 06/2012 HILAIRET M, LUBIN T, TOUNZI Abdelmounaïm 
[3] Machines à réluctance variable. Modélisation et commande Commandes d’actionneurs électriques synchrones et spéciaux,Traité EGEM. Génie Electrique. Editions Hermes. Lavoisier, pages. 193240, 11/2011 HILAIRET M, LUBIN T, TOUNZI Abdelmounaïm 
[4] Low speed teeth coupling machines Non conventional electrical machines, ISTE Wiley, 11/2011 MATT D, TOUNZI Abdelmounaïm, ZAÏM Mohamed El Hadi 
[5] Machines lentes à couplage dentaire Machines électriques non conventionnelles, Traité EGEM. Génie Electrique. Editions Hermés, 04/2011 MATT D, TOUNZI Abdelmounaïm, ZAÏM Mohamed El Hadi 
TH Thèse 
[1] Contribution à la commande vectorielle de machines à réluctance variable. Prise en compte de l’amortissement et de la saturation 02/1993 TOUNZI Abdelmounaïm 
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