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The embedded energy conversion systems onboard vehicles impose strong constraints on power density (low weight and volume) and robustness. Several solutions can be used to achieve these objectives which consist in acting either on the design of the static converter or on the electric machine. In this paper, we propose to act on the two systems together. Thus, the increase in the power density of the converter will be achieved by using wide band-gap semiconductor power devices like the SiC or GaN. These components are very small and able to operate at high frequency, thus reducing the dimensions of passive components and of the cooling system used. To increase the reliability of the electric machine, a multiphase PMSM is used. In this paper, the proposed design method of the integrated GaN inverter into a machine is presented. It will be used for the realization of an integrated GaN inverter into a multiphase PMSM.

ElectroMagnetic Interference ( EMI) simulation of power converters helps engineers in the design process. In this paper, we describe a frequency - domain simulation method based on the Multi-Topology Equivalent Sources (MTES) model. The aim is to reproduce the non-linear behavior of power switches for a fast evaluation of the conducted EMI. The method performance is validated on a DC-DC converter.

This paper presents a design method of a power converter that will be used to realize integrated adjustable speed drives. In order to reduce the dimensions of the static converter to integrate it to the machine, a converter based on gallium nitride (GaN) transistor is being developed. Indeed, GaN transistors packages are small and can operate at high switching frequencies which lead to the reduction of the passive component dimensions. To design this GaN-converter, the determination of parasitical elements of the gate and power circuits is necessary. In fact, these elements have a direct influence on transient behaviour, on the transistor losses and therefore on the cooling system. This work is achieved within the project CE2I (Intelligent Integrated Energy Converter).

Les systèmes électriques embarqués dans les véhicules doivent satisfaire aux exigences normatives de compatibilité électromagnétique. Afin de s'en assurer, l'émission des interférences électromagnétiques est caractérisée par des méthodes de mesure normalisées. Les paramètres du récepteur de mesure, tels que la bande passante de résolution et le mode de détection, influent directement sur les résultats. De ce fait, pour réaliser des confrontations entre mesure et simulation, la réponse du récepteur de mesure doit être prise en compte. La méthode proposée permet de modéliser cette réponse. Le principe utilisé repose sur la transformée de Fourier à court terme et fournit des résultats en détection crête, quasi-crête et moyenne.