摘要
对三相脉宽调制 ( PWM)逆变器近似电流波形进行了计算机辅助研究 .结果表明 ,逆变器电流的平均值和有效值是负载功率因数和调制系数乘积的简单函数 ,这些函数可以用标幺值表示 .
This paper makes a computeraided investigation of approximate inverter current waveforms for three\|phase PWM inverters. The investigation indicates that the average and rms inverter currents are simple fuctions of a single factor eqnal to the product of the power factor and the modulation index. These fuctions have been expressed as per\|unit equations making the design of new inverters simple and precise.
