单向电流MMC在桥臂电流单向性被破坏时的穿越能力分析

Unidirectional-current full-bridge submodule (UC-FBSM) based modular multilevel converter (UC-FB-MMC) has high power-density, dc fault-clearing capability and dynamic dc voltage adjustability, and is therefore suitable for many new dc applications. The normal operation of UC-FB-MMC requires the arm currents being always positive. This requirement can be met in steady states by designing a sufficie...