Description
This design implements a three-phase solid-state transformer (SST) based on a silicon carbide (SiC) power module. Using a modular architecture allows for stacking multiple converter submodules in series to meet medium-voltage grid requirements. Using fast switching SiC devices in the DC/AC stage and the dual active bridge (DAB) isolation reduces the size of the magnetic components and increases the overall power density. Inter-module communication provides high isolation voltage levels required in medium-voltage applications.