两电平电压型逆变器共模电压抑制策略

Research on Common Mode Voltage Suppression Strategy for Two-Level Voltage Inverter

主要介绍了几种抑制逆变器共模电压（CMV）的方法，其中一类是基于空间矢量调制策略优化的方案，主要包括零矢量替代（AZSPWM）、最近非零矢量合成（NSPWM）、虚拟空间矢量调制（VSVM）等策略；另一类是改变硬件电路的拓扑结构抑制共模电压，主要是通过利用三相四桥臂拓扑结构完成对共模电压的抑制。对上述两类方法进行相关的仿真与分析，为共模电压抑制方案的研究提供参考。

In this paper, several methods are introduced, which are mainly divided into two categories of programs, to suppress the common mode voltage （CMV） of inverter. One kind is based on space vector modulation strategy optimization, mainly including the active zero state PWM （AZSPWM）, near state PWM （NSPWM）, virtual space vector modulation （VSVM） and so on. The other is to change the topology of the hardware circuit to suppress the common mode voltage, which mainly used the three-phase four-leg topology to complete the common mode voltage suppression. In this paper, the simulation and analysis of the above schemes are carried out.