基于最小二乘法的永磁同步电机最大转矩电流比控制

微特电机 ›› 2021, Vol. 49 ›› Issue (7): 32-37.

基于最小二乘法的永磁同步电机最大转矩电流比控制

黄济文¹, 王淑红¹, 许连丙³, 刘旭², 任俊杰¹, 张根嘉¹

1.太原理工大学电气与动力工程学院,太原 030024;
2.国网大同供电公司,大同 037006;
3.中煤科工集团太原研究院,太原 030006

收稿日期:2021-03-29 出版日期:2021-07-28 发布日期:2021-07-22
作者简介:黄济文(1995—),男,硕士研究生,从事新型电机理论及其控制技术研究。E-mail:18777981882@163.com。王淑红(1965—),女,硕士生导师,教授,从事新型电机理论及其控制技术研究。许连丙(1983—),男,助理研究员,从事电力电子及电气传动及煤矿设备电控系统的设计工作。任俊杰(1984—),男,博士,讲师,从事先进电机控制技术研究。
基金资助:
国家自然科学基金资助项目(52077147);山西省面上青年基金项目(201901D211043)

Maximum Torque Per Ampere Current Control of Permanent Magnet Synchronous Motor Based on Least Square

HUANG Ji-wen¹, WANG Shu-hong¹, XU Lian-bing³, LIU Xu², REN Jun-jie¹, ZHANG Gen-jia¹

1. College of Electrical and Power Engineering, Taiyuan University of Technology, Taiyuan 030024, China;
2. State Grid Datong Power Supply Company, Datong 037006, China;
3. CCTEG Taiyuan Research Institute Co., Ltd., Taiyuan 030006, China

Received:2021-03-29 Online:2021-07-28 Published:2021-07-22

摘要/Abstract

摘要： 针对内置式永磁同步电机(IPMSM)采用最大转矩电流比(MTPA)控制策略,对电机参数较为敏感的问题,在线利用基于最小二乘法的电感辨识方法得到d,q轴电感,并拟合得到电感与d,q轴电流的三维曲面,以实现电机不同转速、不同负载多种工况下的变参数MTPA控制。控制过程中根据测量电流拟合出该时刻对应的电感值,将该电感值代入MTPA算法中迭代出电流的给定值,控制电机工作在实际MTPA曲线上。仿真和实验结果对比,该参数辨识方法提高了MTPA运行点计算精度。

关键词: 内置式永磁同步电机, 最小二乘法, 最大转矩电流比(MTPA), 参数在线辨识

Abstract: Aiming at the problem that interior permanent magnet synchronous motor (IPMSM) is sensitive to motor parameters when maximum torque per Ampere (MTPA) current control strategy is adopted. The inductance identification method based on least square method was used to obtain the inductance of d,q axis online, and the three-dimensional surface of inductance and d,q axis current was fitted to realize the variable parameter MTPA control under different speeds and loads of the motor. In the control process, the corresponding inductance value was fitted according to the measured current, and the inductance value was put into the MTPA algorithm to iterate the given value of the current, so as to control the motor working on the actual MTPA curve. The comparison between simulation and experimental results showed that the proposed parameter identification method improved the calculation accuracy of MTPA points.

Key words: interior permanent magnet synchronous motor(IPMSM), least square method, maximum torque per Ampere current control(MTPA), on-line identification of parameters

中图分类号:

TM351
TM464

黄济文, 王淑红, 许连丙, 刘旭, 任俊杰, 张根嘉. 基于最小二乘法的永磁同步电机最大转矩电流比控制[J]. 微特电机, 2021, 49(7): 32-37.

HUANG Ji-wen, WANG Shu-hong, XU Lian-bing, LIU Xu, REN Jun-jie, ZHANG Gen-jia. Maximum Torque Per Ampere Current Control of Permanent Magnet Synchronous Motor Based on Least Square[J]. Small & Special Electrical Machines, 2021, 49(7): 32-37.

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