An 800V End to End SiC Powertrain to Accommodate Extremely Fast Charging

Abstract

Widespread adoption of electric vehicles has presented the challenges of short range and prolonged charging time. Going forward, extremely fast charging is the only solution to these problems. However, the typical Silicon power electronics supported 400 V electric vehicle powertrain cannot live up to this challenge. Limitations include the huge cable size, heating of equipment due to high current and user safety, to name a few. In this paper, we have analyzed an 800 V EV powertrain using power electronics based on silicon carbide. In order to implement 800 V powertrain, the complete reconsideration of the electrical system is imperative. In this paper we have presented the implementation of Silicon Carbide based Power electronics to operate an 800 V powertrain and evaluate it against the 800 V Si powertrain. Details of drivetrain, inverter, and auxiliary power units in high voltage charging (Megawatt Level) system are presented in this research.