优化反馈补偿闭环定子磁链观测器  

Optimal Feedback Compensation Closed-loop Stator flux Observer

作　　者：王淑玉 罗振鹏[1] 张思清 韩越 王小龙 WANG Shuyu;LUO Zhenpeng;ZHANG Siqing;HAN Yue;WANG Xiaolong(Inner Mongolia University of Technology,Inner Mongolia Key Laboratory of Electromechanical Control,Hohhot 010080,China)

机构地区：[1]内蒙古工业大学内蒙古自治区机电控制重点实验室,呼和浩特010080

出　　处：《微电机》2022年第8期80-84,共5页Micromotors

基　　金：国家自然科学基金资助项目(61763037);内蒙古自治区高等学校科学技术研究项目(NJZY19077);内蒙古工业大学科学研究项目(ZD201718)。

摘　　要：针对纯积分定子磁链观测器存在的直流偏置与积分漂移问题,对反馈闭环磁链观测器进行了优化,设计了一种改进的反馈补偿闭环磁链观测器。该观测器先利用磁链与反电动势两矢量的正交关系,控制二者的夹角余弦值为零,再通过简单的乘法运算,实现对磁链的动态补偿,从而得到正确的积分结果。理论分析显示,积分结果中的直流分量能够得到完全消除,同时仿真结果证明了,改进观测器的良好性能以及理论分析的正确性。Aiming at the DC bias and integral drift of pure integral stator flux observer,the feedback closed-loop flux observer was optimized and an improved flux observer was designed based on feedback compensation closed loop flux observer.Firstly,the orthogonal relationship between the flux linkage and the back electromotive force(EMF)was used to control the cosine of the angle between them to zero.Then through simple multiplication operation,the dynamic compensation of flux linkage was realized,and the correct integration result was obtained.Theoretical analysis shows that the DC component in the integration result can be completely eliminated.At the same time,the simulation results prove the good performance of the improved observer and the correctness of the theoretical analysis.Theoretical analysis shows that,the DC component in the integration result can be completely eliminated.The simulation results verify the good performance of the improved observer and the correctness of the theoretical analysis.

关 键 词：磁链观测 定子磁链观测器 异步电机 直接转矩控制 

分 类 号：TM343[电气工程—电机]