A highly efficient power block with series connection of power SiC MOSFETs?design, characterization and assessment in MV converters

Implementation of the series connection SiC MOSFETs in medium voltage (MV) high power converters faces a challenges, including electrical/thermal stress imbalance, insulation coordination design, dv/dt elimination and robustness under variable operating conditions. This paper stresses these challenges proposes comprehensive design 9.6 kV/200 A block based on MOSFETs. The has been verified continuous operation, which demonstrates highly efficient reliable operation switching current condition. Afterward, performance screening 5 kV/1 MW inverter is conducted to assess efficiency MV converters. Compared with advanced devices, proposed fast speed low loss, indicates that promising technique expand voltage/power megawatt level. can be expanded other specifications as well.