四开关三相逆变器的空间矢量控制

Research on Four Switch Three Phase Inverter Based on SVPWM

主要研究四开关的三相逆变器电路,该电路由两组开关桥臂和一组电容桥臂组成。它采用了四个基本矢量构成的空间矢量控制方案,并且引入了双环解耦的控制策略。仿真表明了系统设计的可行性,以及解耦控制对系统性能的优化作用。

This paper studies on the circuit of the four switch three phase inverter. The circuit consists of two bridges of switch and a bridge of capacitor, which is controlled by the SVPWM based on the four-basic sector instead of six. And the control strategy adopts the decoupled voltage-current doubel loop method. The simulation result indicates that the theory a nalysis and system design are correct. And the decoupled double loop control optimizes the performance of the system.