基于电流测量误差补偿的感应电机参数辨识  

Parameter Identification of Induction Motor Based on Current Measurement Error Compensation

作　　者：侯文宝 李德路[1] 张刚 HOU Wen-bao;LI De-lu;ZHANG Gang((China University of Mining and Technology,Xuzhou 221008,China)

机构地区：[1]中国矿业大学电气与动力工程学院,江苏徐州221008 [2]江苏建筑职业技术学院,江苏徐州221116

出　　处：《电力电子技术》2019年第1期87-89,96,共4页Power Electronics

基　　金：江苏建筑节能与建造技术协同创新中心博士专项研究基金项目(SJXTBS1704);江苏住建厅项目(2017ZD021)~~

摘　　要：首先分析了磁链、转矩性能受电机参数影响的关系,然后研究了一种基于瞬时无功功率的模型参考自适应(MRAS)转子电阻辨识方案。在分析电流测量误差影响参数辨识精度的基础上,设计一种基于谐振观测器的电流误差补偿方案,提高了转子电阻在不同情况下的在线跟踪精度。最后,设计了Matlab仿真与样机实验,转子电阻的动、静态辨识精度可靠,为感应电机控制性能的提高提供了保障。Firstly,the relationship between flux and torque performance influenced by motor parameters is analyzed, and then a model reference adaptive system(MRAS)rotor resistance identification scheme based on instantaneous reactive power is studied.Based on the analysis of the effect of current measurement error on parameter identification accuracy,a current error compensation scheme based on resonant observer is designed to improve the online tracking accuracy of rotor resistance under different conditions.Finally,the Matlab simulation and prototype experiment are designed.The dynamic and static identification of rotor resistance accuracy is reliable,which provides a guarantee for the improvement of the control performance of the induction motor.

关 键 词：感应电机 转子电阻辨识 电流测量误差 谐振观测器 

分 类 号：TM346[电气工程—电机]