SiC MOSFET Inverter Design, Considering Unplanned Events for Electric Aviation

In this paper, distributed electric propulsion system has been reviewed using virtual concept urban air mobility with 18 propulsion motors and inverters on each side. For distributed power, a demo inverter board with a SiC MOSFET was used and it is functionally tested with permanent magnetic synchronous motor. This board's dynamic loss was measured by double-pulse test and these measured values were used for measurement-based loss simulation. For evaluating total system redundancy, unplanned events, such as changed trajectory, accelerated voltage drop and extended flight time were reviewed. Additionally, each power-distributed inverter with increased current by failure event was simulated in a virtual profile. For maximum power loss, defined cooling condition with heat-sink were evaluated by thermal simulation. Finally, over current test by failure event was checked by silicon on insulator gate driver in the inverter.