摘  要：四开关三相逆变器作为传统六开关逆变器故障后重构拓扑得到了研究重视。该文研究了四开关三相永磁同步电动机矢量控制系统，分析了四开关逆变器空间矢量脉宽调制(SVPWM)技术，并在搭建的仿真和实验平台上进行了对比研究。结果表明，四开关逆变器的采用实现了永磁同步电动机驱动系统的容错运行，同时由于使用较少的功率器件也减小了系统体积，降低了成本。
关键词：永磁同步电动机；四开关三相；矢量控制；SVPWM

Abstract: Four-switch three-phase inverter is being attached as a post-fault reconfiguration topology.Permanent synchronous magnet motor(PMSM)vector control system fed by four-switch three-phase inverter was studied in this paper.Space vector pulse width modulation(SVPWM)for four-switch inverters was analyzed and completed comparison research on the built simulation and experimental platforms.The simulation and experimental results demonstrate that fault-tolerant operation of PMSM can be achieved by means of the adoption of four-switch inverter.And also,the systemic cost and volume are reduced because of the lesser employed power components.
Key Words: Permanent magnet synchronous motor;Four-switch three-phase inverter;Vector control;SVPWM