SiC-MOSFET Inverter in High-Performance PHEV Applications

Conference: PCIM Europe 2022 - International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management
05/10/2022 - 05/12/2022 at Nürnberg, Germany

doi:10.30420/565822027

Proceedings: PCIM Europe 2022

Pages: 10Language: englishTyp: PDF

Authors:
Hofmann, Maximilian; Sueltrop, Christian (Fraunhofer Institute for Integrated Systems and Device Technology IISB, Germany)
Hubert, Thomas; Barkow, Maximilian; Reinlein, Michael (Dr. Ing. h.c. F. Porsche AG, Germany)

Abstract:
Improving the efficiency of the traction inverter and the electric machine is a key driver for the use of new technologies in the powertrain of electrified vehicles. As efficiency becomes more of a focus and SiC-MOSFET technology costs continue to decrease, SiC-MOSFET-based traction inverters are becoming increasingly attractive for lower voltage, lower power applications. In this paper, the potential of a 650 V SiC-MOSFET-based traction inverter for high-performance PHEV vehicles with a 400 V traction battery is investigated and compared to a state-of-the-art design based on 650 V Si-IGBT technology. The calculated efficiency maps and the simulated energy consumption show that the inverter losses can be reduced by up to 40 % in the WLTP driving cycle with SiC technology compared to IGBT technology. Therefore, SiC technology should be considered in future high-performance PHEV powertrain designs.