摘要：为避免五相永磁容错电机空间矢量脉宽调制（SVPWM）推导及实现的复杂性，分析基于载波的脉宽调制(CPWM)和SVPWM算法的原理，研究SVPWM算法中两种不同零电压矢量作用时间的分配机制，提出一种零序电压谐波注入策略，实现等效于SVPWM的CPWM算法。该零序电压谐波由每个PWM周期内电机最大和最小相电压构成。理论分析表明该算法与传统SVPWM等效且实现简单。仿真和实验结果表明该算法达到了SVPWM的控制效果。

关键词：载波脉宽调制；空间矢量脉宽调制；零电压矢量；零序电压谐波
Abstract: To avoid complex deduction and realization of space vector pulse width modulation (SVPWM) for five-phase fault-tolerant permanent magnet motor drive system, a zero sequence voltage harmonic strategy was proposed to acquire carrier-based pulse width modulation (CPWM) algorithm which was equivalent to SVPWM algorithm, by analyzing the principle of CPWM and SVPWM algorithm, and by studying the distribution mechanism of the two kinds of zero voltage vectors′ operation time. The zero sequence voltage harmonic is composed of the maximum and minimum motor phase voltage in each PWM cycle. Theoretical analysis shows that the proposed algorithm is equivalent to SVPWM and simple to implement. Simulation and experimental results demonstrate that the proposed algorithm has the same control effect of the SVPWM technique.

Key words: carrier-based pulse width modulation; space vector pulse width modulation; zero voltage vectors; zero sequence voltage harmonic