六相感应电动机谐波转矩脉动研究

Research of harmonic torque ripple of six-phase induction motor

为了研究梯形波相电流控制下六相感应电动机的运行性能,对六相梯形波相电流进行了傅里叶分解,将其分解为基波电流和一系列谐波电流,然后分别计算各次谐波电流产生的不同谐波磁势。有限元分析结果表明,六相感应电动机消除了一般电动机中最明显的由5次和7次谐波电流所产生的转矩脉动。

In order to study operating performance of six-phase induction motor under control of trapezoidal wave phase current,six-phase trapezoidal wave phase current was decomposed into fundamental current and a series of harmonic current by Fourier decomposition,and then different harmonic magnetic produced by each subharmonic current was calculated.Finite element analysis results show that the six-phase induction motor eliminates the most obvious torque ripple in general motor generated by the fifth and seventh harmonic current.