基于电流型串联谐振变换器和15kV SiC MOSFET的7.2kV单级固态变压器

This paper proposes a novel two-level single-stage direct ac-ac converter for realizing a 7.2-kV medium-voltage (MV) solid-state transformer (SST) based on 15-kV SiC mosfets. A new current-fed series resonant converter (CFSRC) topology is proposed to address major challenges in MV ac-ac converters such as achieving zero-voltage switching (ZVS) for the MV mosfets across wide voltage and load ranges...