九相逆变器SVPWM实现方法的研究

Study on Implementation Method of SVPWM for Nine-Phase Inverters

针对一种为九相集中整距绕组感应电机供电的九相逆变器进行研究。为了提高感应电机输出转矩和直流母线电压利用率,在多相空间矢量理论的基础上提出一种九相逆变器空间矢量脉宽调制的实现方法。对工作状态作用时间、扇区判断、功率开关切换顺序等关键部分进行了推导演算。仿真结果证实了该方法的有效性。

A kind of nine-phase inverter which supply nine-phase concentrated winding with a full-pitch induction machines was researched. In order to achieve the goal of enhancing torque production and DC bus utilization , an implementation method of space vector pulse width modulation that develops from the multi-phase space vector theory was proposed. Some critical parts like the application times of configurations, sector judgment and the switch sequence of power modules were deduced. The simulation results verify the method was effective.