带桥式交流器的凸极同步电机的稳态特性分析

Analysis of steady state characteristics of salient-pole synchronous electric machine with a bridge converter

本文给出了利用复数坐标变量系统解带桥式变流器的凸极同步电机稳态特性的计算方法,并对一台实际电机作了具体计算。计算波形和实验波形的一致性良好。文中还利用FFT对各电压及电流进行了诸波分析,并详细讨论了等效逆序电流的计算。最后,给出了计及谐波电流后的定子磁势。

A computation method for the solution of steady state characteristics of salient-pole eiectric machine fed by a bridge converter is presented, in which a complex coordinate system is used. From the perspectives of the essential structures of the machine, this paper gives a detail analysis of the fundamental parameters and equations of the salient-pole synchronous machine. The computation is conducted on a real machine and steady state solutions are obtained. Furthermore, stator magnetomotive force taking into account harmonics currents are calculated in a detailed way and the harmonics magnetomotive force which may have large influences on the operation characterisics of the machine is pinpointed. The agreement of the computed wave forms with that of experiment validates the computational method presented in the paper.