混合级联变换器在电网应用中的控制方案设计与评估

Compared with the well-known modular multilevel cascaded converter with single-star bridge-cells (MMCC-SSBC), the hybrid cascaded converter (HCC) has the advantage of the lower component count of power transistors and dc capacitors. Thereby, this paper explores the HCC in grid applications and proposes a hierarchical control scheme, which allows the HCC to operate under unbalanced grid conditions ...