Influence of Inductances and Asymmetries on Short-Circuit Behavior for SiC-Based Traction Inverters

Conference: PCIM Conference 2025 - International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management
05/06/2025 - 05/08/2025 at Nürnberg, Germany

doi:10.30420/566541348

Proceedings: PCIM Conference 2025

Pages: Language: englishTyp: PDF

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Authors:
Horvath, Manuel; Hackel, Jonathan; Beushausen, Steffen; Araujo, Samuel; Afewerki, Hermon; Oberdieck, Karl

Abstract:
This paper investigates the impact of system characteristics on power semiconductor switch performance during short-circuit events. It demonstrates that slower turn-on caused by higher stray inductance (LCC), drain current, and DC-link voltage (VDC) results in longer required short-circuit withstand time (tscwt). The paper also highlights the influence of asymmetric module design on short circuit events. The results are based on 2nd generation of Bosch SiC MOSFETs in power module generation 6 (PM6). Understanding these effects is crucial for short circuit robustness and controllability of the system.