基于MMC-PCCF的HVDC系统直流阻抗建模与面向设计的谐波稳定性分析

A modular multilevel converter with a passive circulating current filter (MMC-PCCF) is a novel topology that can inherently suppress circulating currents and has a lower modulation index penalty than the traditional MMC. However, the harmonic stability issue of the MMC-PCCF-based HVdc system is more complex, which has not been well addressed yet. This article, for the first time, develops accurate...