The Impact of SiC Traction Converter Switching on EV DC Bus and Battery
Conference: PCIM Europe 2023 - International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management
05/09/2023 - 05/11/2023 at Nürnberg, Germany
doi:10.30420/566091061
Proceedings: PCIM Europe 2023
Pages: 8Language: englishTyp: PDF
Authors:
Schlueter, Michael; Gentejohann, Marius; Dieckerhoff, Sibylle (Technische Universität Berlin, Power Electronics Group, Germany)
Goldammer, Erik; Kowal, Julia (Technische Universität Berlin, Electrical Energy Storage Technology Group, Germany)
Hepp, Maximilian; Wondrak, Wolfgang (Mercedes-Benz AG, Power Electronics Advanced Engineering, Germany)
Abstract:
The research project “SiCWell”, funded by the German BMBF, investigates the impact of fast-switching SiC power semiconductors on vehicle battery lifetime. The current harmonics generated by the main inverter are studied in detail to investigate the spectral components of the generated current ripple in the battery. Simulation results are compared to laboratory measurements to define the current ripple relevant for cell cycling. Furthermore, the current harmonics distribution on the dc bus is analyzed, which has an important impact on the battery current ripple. The research results show an impact of the current harmonics on vehicle battery lifetime, and a simulation model is developed that enables a sensitivity analysis of powertrain parameters like switching frequency, dc link capacitance or modulation scheme.