摘要
多相电机由于各相之间耦合影响,即使磁场出现很小畸变,也能导致很大谐波电流。针对这个问题,首先建立六相永磁电机数学模型,分析谐波电流原因,并提出一种新的解耦矩阵。将六相永磁同步电机中基波电流与谐波电流实现解耦,将不同频率的交流电流分别转换为不同平面直流量,从而实现对多相电机谐波电流控制。采用本文提出电流解耦控制与传统将六相电机当作两个三相电机控制方法进行对比仿真分析和实验对照,结果表明本文提出方法能够有效抑制谐波电流,有利于提高控制性能。
The magnet field coupled between the phases of the multi-phase motor would result uncontrolled harmonic currents even though the magnet field distort slightly.The mathematical model of a six-phase permanent magnet synchronous motor（PMSM） is established to analysis the reason.In the paper a novel decoupled transform matrix is proposed to decouple the fundamental component and the harmonic components and transfer the different frequency alternating quantities into direct quantities to restrain the harmonic currents.The decoupled control and the conventional control are contrasted by simulation and experiment to verify that the proposed method could restrain the harmonic currents effectively and improve the performance.
出处
《电工技术学报》
EI
CSCD
北大核心
2011年第9期31-36,共6页
Transactions of China Electrotechnical Society
关键词
六相永磁同步电机
磁场畸变
数学模型
谐波电流
解耦控制
Six-phase permanent magnet synchronous motor
magnetic field distortion
mathe-matical model
harmonic current
decoupled control
