电流型逆变器六相感应电动机驱动系统的分析

Analysis of CIS Drive System with 6-phase Induction Motor

本文以十二脉冲电流型逆变器驱动的六相感应电动机拖动系统为研究对象,利用坐标变换,在考虑电流型逆变器换流过程的情况下,推导出该系统的d-q模型,用已建立的d-q方程分析了系统的稳态特性,同时采用小位移原理进一步分析了系统参数以及电机参数对系统稳定性的影响,且编制了计算机程序,为该类系统的优化设计提供了有力的手段。

In this paper, a six-phase induction motor system driven by a dual six-phase current source inverter is studied. A d-q modle of such a system taking into account the commutation period is derived from the change of variables. The steady state perfomances for this system are analyzed by means of this established d-q equations. Finally, the influence of parameters, including this system and induction motor, for the stability is discussed. It is shown that a six-phase motor drive system appears greater in advantage than a three-phase motor drive system.