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Effet du vieillissement par fatigue électrothermique sur la compatibilité électromagnétique des composants de puissance à base de SiC

Abstract : This research work focuses on the electrothermal aging effect on the electromagnetic compatibility of power components based on silicon carbide SiC. It focuses on two major parts ; an experimental part and another more oriented modelization. Experimentally, this thesis studies the aging effect of SiC transistors used in static converters on the electromagnetic interferences EMI generated by these converters. The second part deals with the modeling of these transistors in order to emulate the effect of their aging on the EMI of the modules they compose. This step made it possible to validate the methodology developed for the simulation of the conducted EMI of a healthy SiC MOFSET at first and of an aged SiC MOSFET in a second time. Overall, this innovative modeling approach developed in this work helps the designers of static converters to predict the conducted EMI before and after aging without going through the measurement. This provides additional information on the evolution of the EMC signatures of such modules during its lifetime and thus to estimate the risk associated with the aging of the components.
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https://tel.archives-ouvertes.fr/tel-02082526
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Submitted on : Thursday, March 28, 2019 - 12:07:08 PM
Last modification on : Friday, September 11, 2020 - 5:06:05 AM
Long-term archiving on: : Saturday, June 29, 2019 - 2:16:00 PM

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  • HAL Id : tel-02082526, version 1

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Chawki Douzi. Effet du vieillissement par fatigue électrothermique sur la compatibilité électromagnétique des composants de puissance à base de SiC. Energie électrique. Normandie Université; Université du Centre (Sousse, Tunisie), 2019. Français. ⟨NNT : 2019NORMR002⟩. ⟨tel-02082526⟩

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