基于混合隔离模块化多电平变换器的固态变压器拓扑及其简化功率转换与不均匀电压比

This article proposes a novel triple-port solid-state transformer (SST) topology based on a hybrid isolated modular multilevel converter (MMC), which overcomes the limitation of voltage ratio R(pu) in the conventional MMC-based SST. By integrating a high-frequency link into the MMC structure and applying various types of isolated submodule (ISM), the proposed SST can function as a step-down rectif...