双三相永磁同步电机绕组开路故障诊断方法  

Winding open circuit fault diagnosis method for dual three-phase permanent magnet synchronous motor

作　　者：王爽[1] 谢圣宝 张秦一 WANG Shuang;XIE Shengbao;ZHANG Qinyi(School of Mechatronic Engineering and Automation,Shanghai University,Shanghai 200444,China)

机构地区：[1]上海大学机电工程与自动化学院,上海200444

出　　处：《电机与控制学报》2023年第5期108-116,共9页Electric Machines and Control

基　　金：上海市自然科学基金(19ZR1418600)。

摘　　要：为了实现对双三相永磁同步电机绕组开路故障的快速诊断与定位,利用双三相永磁同步电机所特有的谐波子平面,提出采用谐波子平面电流矢量并结合归一化处理方案的双三相永磁同步电机绕组开路故障诊断策略。首先,根据故障前后谐波子平面电流矢量幅值大小的变化进行绕组开路故障的检测,其次,依据绕组开路故障后不同的电流矢量相角,准确定位出发生开路故障的绕组。为消除负载发生突变时可能造成的误诊断现象,进一步设计了针对谐波子平面电流矢量的归一化处理方案,提升对双三相永磁同步电机绕组开路故障诊断的鲁棒性。仿真和实验结果表明,所提策略能够快速地诊断并定位出绕组的开路故障,在负载发生突变时也可以表现出良好的可靠性和鲁棒性。In order to achieve rapid diagnosis and localization of open circuit faults in winding of dual three-phase permanent magnet synchronous motor,based on the unique harmonic subspace of dual threephase permanent magnet synchronous motor,with the harmonic subspace current vector and the normalization scheme combined,a winding open circuit fault diagnosis strategy of dual three-phase permanent magnet synchronous motor was proposed.Firstly,the winding open circuit fault was detected according to the change of harmonic subspace current vector amplitude before and after the fault.Secondly,the winding with open circuit fault was accurately located according to different current vector phase angles after the winding open circuit fault.In order to eliminate the possible misdiagnosis caused by sudden load change,a normalization scheme for harmonic subspace current vector was further designed to improve the robustness of fault diagnosis.The simulation and experimental results show that the proposed harmonic subspace current vector method can quickly diagnose and locate the open circuit fault of winding,and can also show good reliability and robustness in case of sudden load change.

关 键 词：双三相永磁同步电机 故障诊断策略 绕组开路故障 谐波子平面电流矢量 归一化处理 

分 类 号：TM35[电气工程—电机]