一种用于三电平逆变器中点电压平衡的谐振开关电容变换器

Neutral-point voltage unbalancing is a common problem in three-level inverters. The original neutral-point voltage balancing circuit is the buck–boost converter. Since the inductor carries low frequency components, the power density is limited. At the same time, the efficiency is low because the soft switching cannot be realized. In this article, a neutral-point voltage balance circuit based on re...