基于正负序电流检测的永磁同步电机匝间短路故障在线诊断方法

微特电机 ›› 2026, Vol. 54 ›› Issue (8): 73-78.

基于正负序电流检测的永磁同步电机匝间短路故障在线诊断方法

卢友文¹,马方潇^2,3,李培祥^3,4,何立松⁵,柯栋梁³

1. 宁德时代电机科技有限公司,宁德 352000;2. 福建农林大学机电工程学院,福州 350100;3. 中国科学院海西研究院泉州装备制造研究中心,泉州 362216;4. 福州大学电气工程与自动化学院,福州 350108;5. 同济大学电子与信息工程学院,上海 201804

出版日期:2026-08-28 发布日期:2026-08-28
通讯作者: 马方潇( 2000—) ,通信作者,男,硕士研究生,研究方向为永磁同步电机控制与故障诊断。
作者简介:卢友文(1967—) ,男,高级工程师,研究方向为永磁同步电机本体设计及驱动控制。
基金资助:
福建省自然科学基金项目 ;泉州市科技计划项目

Online Fault Diagnosis Method for Interturn Short-Circuit of Permanent Magnet Synchronous Motor Based on Positive and Negative Sequence Current Detection

LU Youwen¹,MA Fangxiao^2,3,LI Peixiang^3,4,HE Lisong⁵,KE Dongliang³

1. Ningde Contemporary Electric Technology Co. ,Ltd. ,Ningde 352000,China;2. College of Mechanical and Electrical Engineering,Fujian Agriculture and Forestry University,Fuzhou 350100,China;3. Quanzhou Institute of Equipment Manufacturing,Haixi Institute,Chinese Academy of Sciences,Quanzhou 362216,China;4.College of Electrical Engineering and Automation,Fuzhou University,Fuzhou 350108,China;5. College of Electronic and Information Engineering,Tongji University,Shanghai 201804,China

Online:2026-08-28 Published:2026-08-28

摘要/Abstract

摘要： 匝间短路属于永磁同步电机的早期故障形式之一,是引发其它电气故障的重要原因,因此,匝间短路故障诊断对提高电驱系统安全性具有重要意义。为实现匝间短路故障的准确诊断,本文提出一种基于正负序电流检测的永磁同步电机匝间短路故障在线诊断方法。建立永磁同步电机匝间短路故障数学模型,分析表明匝间短路故障将引起电机负序电流增大。根据瞬时对称分量法,通过双广义三阶积分器实现正负序电流的分离,经过坐标变换得到同步旋转坐标系下的正负序电流,再对 q 轴序电流与正序电流进行低通滤波后,计算其幅值的比值作为故障特征信号。通过实验验证了所提方法的有效性。

关键词: 永磁同步电机, 匝间短路, 故障诊断, 双广义三阶积分器

Abstract: Interturn short-circuit ( ITSC) is an incipient fault in permanent magnet synchronous motor ( PMSM) and a major cause of other electrical faults.Therefore,ITSC diagnosis is of great importance for improving the safety of electric drive systems. To achieve accurate diagnosis of ITSC faults,this paper proposes an online diagnosis method based on detection of positive and negative sequence currents. A mathematical model of a PMSM with an ITSC fault is established,and the analysis shows that this fault leads to an increase in the negative sequence current. Based on the instantaneous symmetrical components method,the positive and negative sequence currents are separated using a dual third-order generalized integrator ( DTOGI) .Through coordinate transformation, the positive and negative sequence currents in the synchronous reference frame are obtained. After low-pass filtering the q-axis negative and positive sequence currents,the ratio of their amplitudes is calculated as the fault characteristic signal. The effectiveness of the proposed method is verified by experiments.

Key words: permanent magnet synchronous motor, interturn short-circuit, fault diagnosis, dual third-order generalized integrator

中图分类号:

TM351

卢友文, 马方潇, 李培祥, 何立松, 柯栋梁. 基于正负序电流检测的永磁同步电机匝间短路故障在线诊断方法[J]. 微特电机, 2026, 54(8): 73-78.

LU Youwen, MA Fangxiao, LI Peixiang, HE Lisong, KE Dongliang. Online Fault Diagnosis Method for Interturn Short-Circuit of Permanent Magnet Synchronous Motor Based on Positive and Negative Sequence Current Detection[J]. Small & Special Electrical Machines, 2026, 54(8): 73-78.