A SiC MOSFET propulsion inverter design with power redundancy, considering unwanted events, for electrical aircrafts

This paper discusses a distributed electric propulsion (DEP) system for virtual aviation systems. The DEP system includes six propulsion inverters with SiC MOSFET modules. Through three different virtual flight profiles – normal planed one, another with changed trajectory, and the other with changed trajectory and failure mode – power and current sharing between these modules was investigated. Measurement-based loss simulations and thermal simulations, with defined cooling conditions, were performed to test power redundancy and loss in each propulsion inverter for all the three virtual profiles.