Individual information
Loïc CHEVALLIER | ![]() | |
Titre | Ingénieur d'étude | |
Equipe | Outils et Méthodes Numériques | |
Adresse | Université de LILLE Avenue Paul langevin 59655 VILLENEUVE-D'ASCQ | |
Téléphone | +33 (0)3-62-26-82-17 | |
loic.chevallier@univ-lille.fr | ||
Site personnel | http://pro.univ-lille.fr/loic-chevallier | |
Réseau scientifique | https://orcid.org/0000-0002-3064-7978 | |
Publications |
International Journals |
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[1] An Improved Newton Method Based on Choosing Initial Guess Applied to Scalar Formulation in Nonlinear Magnetostatics IEEE Transactions on Magnetics, Vol. 55, N°. 6, pages. 1-4, 06/2019, URL, Abstract CHERIF Riheb, TANG Zuqi, GUYOMARCH Frédéric, CHEVALLIER Loïc, LE MENACH Yvonnick |
An improved starting point Newton method applied to 3-D scalar formulation in magnetostatics is proposed in this paper. Compared with the classical Newton method, the inexact-Newton and quasi-Newton methods are reported by testing on a benchmark problem as well as an industrial example. Remarkable convergence acceleration using the proposed strategy is observed, and thus, it significantly
reduces the computational time. |
[2] 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 |
[3] EPE’13 ECCE Europe, a carbon neutral conference! EPE Journal, Vol. 28, N°. 1, pages. 43-48, 01/2018 BOUSCAYROL Alain, CHEVALLIER Loïc, CIMETIERE Xavier, CLENET Stéphane, LEMAIRE-SEMAIL Betty |
[4] End-Region Leakage Fluxes and Losses Analysis of Cage Induction Motors Using 3-D Finite-Element 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 non-negligible 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 end-region leakage fluxes and losses, is investigated and considered for the case of a high-power cage induction motor. The study is performed at locked rotor, no-load, and rated load conditions using a 3-D finite-element modeling approach. The influence of the leakage flux on the end-region 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 112-method B test. |
[5] Influence of uncertainties on the B(H) curves on the flux linkage of a turboalternator International Journal of Numerical Modelling: Electronic Networks, Devices and Fields, Vol. 27, N°. 3, pages. 385-399, 01/2014, URL, Abstract MAC Duy Hung, CLENET Stéphane, BEDDEK Karim, CHEVALLIER Loïc, KORECKI Julien |
In this paper, we analyze the influence of the uncertainties on the behavior constitutive laws of ferromagnetic materials on the behavior of a turboalternator. A simple stochastic model of anhysteretic nonlinear B(H) curve is proposed for the ferromagnetic yokes of the stator and the rotor. The B(H) curve is defined by five random parameters. We quantify the influence of the variability of these five parameters on the flux linkage of one phase of the stator winding depending on the excitation current I. The influence of each parameter is analyzed via the Sobol indices. With this analysis, we can determine the most influential parameters for each state of magnetization (according to the level of I) and investigate where the characterization process of the B(H) curve should focus to
improve the accuracy of the computed flux linkage. |
[6] Test Harness on a Preconditioned Conjugate Gradient Solver on GPUs: An Efficiency Analysis IEEE Trans. Mag, Vol. 49, N°. 5, pages. 1729-1732, 05/2013 RODRIGUES A. Wendell de O., CHEVALLIER Loïc, LE MENACH Yvonnick, GUYOMARCH Frédéric |
International Conferences and Symposiums |
[1] An Improved Newton Method Based on choosing Initial Guess Applied to Scalar Potential Formulation in Nonlinear Magnetostatics CEFC 2018, Hangzhou, China, 10/2018 CHERIF Riheb, TANG Zuqi, GUYOMARCH Frédéric, CHEVALLIER Loïc, LE MENACH Yvonnick |
[2] An improved starting point for Newton’s method solving 3D nonlinear magnetostatic problems EPNC 2018, Arras, France, 06/2018 CHERIF Riheb, TANG Zuqi, GUYOMARCH Frédéric, CHEVALLIER Loïc, LE MENACH Yvonnick |
[3] Topology Optimisation of a 3D Electromagnetic Device using the SIMP Density-Based 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 density-based 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 non-linear B(H) curve is also taken into account.
Index Terms—gradient-based algorithm, relaxation of variables, SIMP density method, weighted objective sum |
[4] Carbon care action of IEEE-VPPC’14 Vehicle Power and Propulsion Conference (VPPC), 2015 IEEE, pages. 1-6, 10/2015, Abstract JOKELA Tommi, CATTIAU Valentin, TAVARES Paulo, CHEVALLIER Loïc, BOUSCAYROL Alain, PEREIRINHA Paulo, SILVA Luis, TROVAO Joao |
Organizing international conferences leads to significant amounts of emitted greenhouse gases (GHG’s). This is mainly due to the transport of the attendees to the conference venue. At IEEE-VPPC’14, actions were taken to reduce and to compensate the conference GHG emissions as well as to raise public awareness. This paper describes these actions and presents a quantitative estimation of the GHG sources related to the conference. |
[5] Experiences on carbon care conferences Vehicle Power and Propulsion Conference (VPPC), 2014 IEEE, pages. 1-6, 10/2014, URL, Abstract ALLEGRE Anne-Laure, ASTIER S., BOUSCAYROL Alain, CHEVALLIER Loïc, CIMETIERE Xavier, CLENET Stéphane, LEMAIRE-SEMAIL Betty, MAUSSION Pascal, SERGENT Jean-François |
Organizing international conferences leads to emission of greenhouse gases (GHG). Even though, some conferences are devoted to “greener” systems (e.g. IEEE VPPC), the transport of attendees and the local organization of the conference are not “carbon free”. Consequently, some experiences are reported in this paper in order to reduce the ecological footprint of the conference itself and also to mitigate the emitted GHG for international congresses. |
[6] Test Harness on a Preconditioned Conjugate Gradient Solver on GPUs: An Efficiency Analysis CEFC 2012 International Conference on Electromagnetic Field Computation, Oita, Japan, 11/2012, Abstract RODRIGUES A. Wendell de O., CHEVALLIER Loïc, LE MENACH Yvonnick, GUYOMARCH Frédéric |
The parallelization of numerical simulation algorithms, i.e., their adaptation to parallel processing architectures, is an aim to reach in order to hinder exorbitant execution times. The parallelism has been imposed at the level of processor architectures and graphics cards are now used for general-purpose calculation, also known as “General-Purpose computation on Graphics Processing Unit (GPGPU)”. The clear benefit is the excellent performance over price ratio. Besides hiding the low level programming, software engineering leads to a faster and more secure application development. This paper presents the real interest of using GPU processors to increase performance of larger problems which concern electrical machines simulation. Indeed, we show that our auto-generated code applied to several models allows achieving speedups of the order of 10x. |
National Conferences and Symposiums |
[1] Technique de génération de maillage par intersection de lignes équipotentielles numelec,Paris, 11/2017 DEBUSSCHÈRE Lydéric, LE MENACH Yvonnick, CLENET Stéphane, CHEVALLIER Loïc, GOURSAUD Benjamin, DUCREUX Jean-Pierre |
[2] Imposition d’un courant uniforme dans un conducteur Numelec 2012, Marseille, France, 07/2012, Abstract PIERQUIN Antoine, LE MENACH Yvonnick, ROGER Jean-Yves, CHEVALLIER Loïc |
Cette communication présente une méthode pour discrétiser
la densité de courant, en imposant une divergence nulle et en minimisant
l’erreur par rapport à la densité de courant exacte et uniforme. |
Dernières actualités
- Séminaire doctorants, 28 Janv. 2021
- Journée des doctorants de 3ème année, 12 Fév. 2021
- Assemblée générale du laboratoire, 22 Janv. 2021
- Soutenance de thèse, Raphaël PILE, 20 Janv. 2021
- Soutenance de thèse, Jérome MARAULT, 20 Janv. 2021
- Soutenance de thèse, Racha AYDOUN, 17 Déc. 2020
- Soutenance de thèse, Abdelhak MEKAHLIA, 17 Déc. 2020
- lauréat du Force Award, Emile Devillers
- Soutenance de Thèse, Xin WEN, 7 Déc. 2020
- Soutenance de thèse, Adham KALOUN, 4 Déc. 2020