A Microprocessor Resource-Saving Dual Active Bridge Control for Startup and Restart of Three-Stage Modular Solid-State Transformer

The three-stage modular solid-state transformer (SST) is a typical SST with a non-trivial start-up process. Specifically, special controls must be used to reduce the inrush current in the DC/DC stage during the start-up process of these SSTs. For the DC/DC stage based on the widely studied single-phase-shift dual active bridge (DAB), no inner-phase-shift control is required in its normal operation...