电工技术学报2017，Vol.32Issue(5)：1-8,8.
电动汽车PMSM退磁故障诊断及故障模式识别
Demagnetization Fault Diagnosis and Fault Mode Recognition of PMSM for EV
摘要
Abstract
The local demagnetization fault and uniform demagnetization fault of permanent magnets easily appears in permanent magnet synchronous motor (PMSM) drive system of electric vehicle (EV) due to the influences of PMSM power density, control method and operation environment.In order to realize safe and reliable operation of PMSM drive system, the demagnetization fault diagnosis and fault mode recognition of PMSM has been one of the key technique problems which urgently need to be solved.Therefore, an algebraic identification method is first proposed in this paper to implement online identification of permanent magnet flux, then the identification results is used as the criterion of qualitative diagnosis of demagnetization fault, and then, the instantaneous frequency analysis method of stator current based on Hilbert-Hang transform (HHT) is adopted to realize the effective extraction of non-stationary characteristic signals of local demagnetization fault under the vehicle operating conditions.At last, the simulation and experimental research results are showed to confirm that the proposed integrated solutions of demagnetization fault diagnosis and fault mode recognition of permanent magnets are able to realize the signal of online accurate diagnosis of demagnetization fault and reliable recognition of fault mode by realizing the online accurate identification of permanent magnet flux and the effective extraction of non-stationary weak characteristic signals of local demagnetization fault under the constraints of measurement noise and vehicle operating conditions.Finally, recognition of demagnetization fault online diagnosis and fault mode can be achieved effectively.关键词
电动汽车/永磁同步电动机驱动系统/代数辨识法/希尔伯特黄变换/退磁故障诊断/故障模式识别Key words
Electric vehicle/permanent magnet synchronous motor drive system/algebraic identification method/Hilbert-Huang transform/demagnetization fault diagnosis/fault mode recognition分类
信息技术与安全科学引用本文复制引用
李红梅,陈涛..电动汽车PMSM退磁故障诊断及故障模式识别[J].电工技术学报,2017,32(5):1-8,8.基金项目
国家自然科学基金(51377041)、安徽省变频电机及控制系统工程技术研究中心(2010AKSY0273)及安徽省教育厅(KJ2011A217)资助项目. （51377041）
