一种改进定子磁链观测的三相感应电机控制系统  

Modified Stator-Flux Observer for Three-Phase Induction Motor Control System

作　　者：刘占军 LIU Zhanjun(Shanghai Ruking Intelligent Control Technologies Co.,Ltd.,Shanghai 200438,China)

机构地区：[1]上海儒竞智控技术有限公司,上海200438

出　　处：《电机与控制应用》2021年第10期41-44,共4页Electric machines & control application

摘　　要：定子磁链大多采用反电动势积分而得,反电动势的初值和偏置会导致积分结果存在严重偏差。通过分析三相感应电机定子电压、反电动势、定子磁链的幅值和相位关系,提出了一种新的定子磁链计算方法,该方法原理简单,易于实现,计算量小。通过仿真验证了该方法的可行性与有效性。Mostly stator flux linkage is obtained by integration of back electromotive force(back-EMF).The initial value and DC bias of the back-EMF can make the integral result deviation seriously.The amplitude and phase relationships of stator voltage,back-EMF and stator flux linkage in three-phase induction motor are analyzed,and a new method is proposed for the calculation of stator flux.This method is simple in theory,easy to be implemented and has small amount of calculation.The MATLAB simulation prove the feasibility and effectiveness of the proposed method.

关 键 词：感应电机 定子磁链 无速度传感器 电压模型 

分 类 号：TM301.2[电气工程—电机]