Dual three-phase permanent magnet (DTPPM) machines are suitable for applications with high power density and high reliability requirements. However, uneven demagnetization fault (UDF) can occur due to harsh working conditions. This article proposes a noninvasive, online detection method of UDF in DTPPM machines based on the electrical signal difference between two sets of three-phase windings, which can be more conducive to UDF diagnosis with higher sensitivity. First, the influence of dual three-phase winding arrangements on phase permanent magnet (PM) flux linkage is investigated in DTPPM machines under UDF. It shows that the fault characteristic harmonics appear in fractional-slot DTPPM machines and integral-slot DTPPM machines, where a single set of three-phase windings is rotationally asymmetric. Furthermore, according to the three-phase relationship of harmonic vectors, it is analyzed whether the fault characteristic harmonics are reflected in stator currents or zero-sequence voltage components (ZSVCs). Notably, taking advantage of the structural feature in DTPPM machines, the proposed method obtains higher sensitivity of UDF detection, as the amplitudes of fault characteristic harmonics in electrical signal difference are larger than that in stator current or ZSVC in a single set of three-phase windings. Finally, experiments are conducted to validate the effectiveness of the proposed method.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Uneven Demagnetization Fault Diagnosis in Dual Three-Phase Permanent Magnet Machines Based on Electrical Signal Difference


    Contributors:
    Zhan, Haolan (author) / Wu, Lijian (author) / Lyu, Zekai (author) / Du, Yidong (author) / Fang, Youtong (author)


    Publication date :

    2023-06-01


    Size :

    10470663 byte




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




    DEMAGNETIZATION DIAGNOSIS METHOD FOR PERMANENT MAGNET MOTOR OF ECO-FRIENDLY VEHICLE

    KIM SEONG MIN / LIM JAE SANG / YOUN KIL YOUNG et al. | European Patent Office | 2016

    Free access

    Dynamic Overmodulation Methods for Dual Three-Phase Permanent Magnet Synchronous Machines

    Duan, Qianwen / Yang, Qifan / Tian, Wei et al. | IEEE | 2025


    Comparison of Two Different Winding Sets for Dual Three-Phase Permanent Magnet Machines

    Keller, Daniel / Karayel, Akif / Parspour, Nejila | IEEE | 2019