四电平中点钳位变换器的新视角：四电平 = 二电平 + 三电平

This article proposes a new insight on the four-level neutral point clamped converters: Four-level = two-level + three-level. With the proposed idea, every four-level neutral point clamped converter topology can be regarded as a hybrid combination of a two-level converter and a three-level converter. Thus, the common and complex capacitor voltage imbalance issue of four-level neutral point clamped...