电工技术学报  2018, Vol. 33 Issue (7): 1508-1515    DOI: 10.19595/j.cnki.1000-6753.tces.170161
电机与电器 |
一种基于电感饱和效应的电流差值检测永磁同步电机转子初始位置的方法
黄科元, 陈忠强, 黄守道
湖南大学电气与信息工程学院长沙 410082
A Initial Rotor Position Estimation Method for PMSM Based on Inductance Saturation Effect
Huang Keyuan, Chen Zhongqiang, Huang Shoudao
College of Electrical and Information Engineering Hunan University Changsha 410082 China
全文: PDF (20614 KB)  
输出: BibTeX | EndNote (RIS)      
摘要 

解决无位置传感器永磁同步电机(PMSM)控制系统起动困难的关键在于准确的转子初始位置检测。该文在分析了永磁同步电机绕组磁路饱和度与电感值以及永磁体转子位置与绕组电流的关系的基础上,设计了一种电流差值检测方法,定子三相绕组任意选通两相,另一相悬空,正反方向注入电压脉冲,得到响应电流差值,根据电流差值得到转子初始位置,同时辨识出转子NS极。为了克服注入的电压脉冲在绕组中产生的剩磁影响采样电流准确性的问题,提出了一种抵消剩磁的脉冲注入方式,从而提高转子初始位置检测的准确性。实验结果验证了该方法简单可靠,不受转子凸极结构限制,可同时适用于面贴式和内嵌式永磁同步电机,检测过程保持完全静止,具有很高的工程实用性。

服务
把本文推荐给朋友
加入我的书架
加入引用管理器
E-mail Alert
RSS
作者相关文章
黄科元
陈忠强
黄守道
关键词 永磁同步电机转子初始位置电流差值检测剩磁    
Abstract

The initial rotor position detection accuracy is the key of solving the start difficulty in PMSM sensor-less control. Based on the analysis of the relationship between the magnetic circuit saturation with inductance value of permanent magnet synchronous motor (PMSM), the relationship between the rotor position and the winding current, design a current difference detection method, Arbitrarily selected two phase winding, the other phase winding is disconnected, the voltage pulses are injected in the forward and reverse directions of the winding, the rotor position is calculated and the NS poles are distinguished. In order to eliminate the impact of the current sampling accuracy result from the residual magnetic flux generated by voltage pulse, a method of pulse injection which can eliminate the influence of residual flux is proposed in this paper. It can improve the accuracy of the initial rotor position angle detection. The experimental results verify that the method is simple and reliable, and is not limited by the salient pole structure of the rotor, and it can be applied to both surface mount and embedded motor. The detection process remains the rotor completely static and has great value of practical engineering.

Key wordsPermanent magnet synchronous motor    rotor initial position    current difference detection    residual magnetic flux   
收稿日期: 2017-02-20      出版日期: 2018-04-12
PACS: TM341  
基金资助:

湖南省重点研发计划项目(2015GK2004)、国家自然科学基金项目(51707062)和中国博士后科学基金项目(2016M602407)资助

通讯作者: 陈忠强男,1991年生,硕士研究生,研究方向为电机控制。E-mail:chenzhingqiang@qq.com   
作者简介: 黄科元男,1974年生,副教授,硕士生导师,研究方向为电力电子与电力传动、风力发电及其控制。E-mail:kyhuang@163.con
引用本文:   
黄科元, 陈忠强, 黄守道. 一种基于电感饱和效应的电流差值检测永磁同步电机转子初始位置的方法[J]. 电工技术学报, 2018, 33(7): 1508-1515. Huang Keyuan, Chen Zhongqiang, Huang Shoudao. A Initial Rotor Position Estimation Method for PMSM Based on Inductance Saturation Effect. Transactions of China Electrotechnical Society, 2018, 33(7): 1508-1515.
链接本文:  
https://dgjsxb.ces-transaction.com/CN/10.19595/j.cnki.1000-6753.tces.170161          https://dgjsxb.ces-transaction.com/CN/Y2018/V33/I7/1508