一种改进的电动汽车用异步电机参数离线辨识方法研究  

An Improved Off-Line Identification Method of Asynchronous Motor Parameters for Electric Vehicles

作　　者：史文凡 贾洪平[1] 颜建虎[2] 于杏 

机构地区：[1]江苏大学电气信息工程学院,镇江212000 [2]南京理工大学自动化学院,南京210094

出　　处：《电气工程学报》2017年第5期28-34,共7页Journal of Electrical Engineering

基　　金：国家自然科学基金(51407094);江苏省自然科学基金(BK20140785)项目

摘　　要：本文提出了一种异步电机参数离线辨识的改进算法。对传统直流实验进行改进,得到等效的控制电路来完成定子电阻的辨识。然后利用单相交流堵转实验来辨识定子漏感和转子电阻。在Vif空载实验中,采用计算无功功率来辨识电机互感的方法,避免了传统空载实验中复杂的FFT计算过程。最后,在一台额定功率为3.5kW的异步电机上进行了参数辨识的仿真与实验研究。结果表明,本文所提出的方法在工程应用中简易可行,辨识得到的电机参数具有较高的准确性。This paper presents an improved algorithm for off-line identification of asynchronous motor parameters. The traditional DC experiment is improved to obtain the equivalent control circuit to realize the stator resistance identification. And then the single- phase AC locked rotor experiment is used to identify the stator leakage inductance and rotor resistance. In the V/f no load experiment, the motor mutual inductance is identified by calculating the reactive power to avoid the complex FFT calculation in the traditional no-load experiments. Finally the simulation and experiment of parameter identification areimplementedfor a 3.5kW asynchronous motor respectively. The results show that this presented method is simple and feasible in engineering control application and has higher precision.

关 键 词：异步电机 参数离线辨识 矢量控制 无功功率 

分 类 号：TM921[电气工程—电力电子与电力传动]