一种具有嵌套整流器-逆变器组合及两个直流电源的四电平开绕组感应电机驱动器

This paper proposes a new nested rectifier-inverter circuit topology for a four-level (4-L) open-end winding induction motor drive (OEWIMD). To realize the 4-L inversion, the nested rectifier-inverter topology operates with unequal dc-link voltages, which are in the ratio of 2:1. The proposed topology has the inherent ability of avoiding the overcharging of the lower dc-link voltage capacitor by i...