关键词: 双逆变器, 空间电压矢量解耦, 最近四矢量空间矢量脉宽调制, 共模电压

Abstract: When a five-phase open-winding motor driven by a dual inverter which is powered by a single DC voltage source, the PWM vector modulation strategy will inevitably generate common mode voltage in the inverter system. A method to eliminate the common mode voltage of the five-phase dual inverter system was studied. The method used the principle of nearest four vector space vector pulse width modulation and space voltage vector decoupling to decompose a given reference voltage vector into two equivalent reference voltage vectors of equal size and 144° in direction. It was separately generated by two five-phase inverter to eliminate the common mode voltage of the dual inverter system. Simulations verified the correctness and effectiveness of the method.