A robust sensorless control method requests an accurate rotor position estimation even under open-circuit faults. Thus, a comprehensive high-frequency (HF) square-wave voltage injection (HFSVI)-based sensorless control method is proposed method by considering six types of single open-phase faults (SOPFs), 12 types of single open-switch faults (SOSFs), and 15 types of double open-phase faults (DOPFs) of dual three-phase interior permanent magnet motor (DT-IPM). To decrease the scheme design complexity, the above 33 types of faults are classified into five new categories according to their effects on the HF response currents. Based on the specific fault classification, a signal reconstruction is proposed by combining HF currents in two subspaces to eliminate the effects of HF current distortion on the rotor position estimation. Since the coefficients of the signal reconstruction under five categories are different, a fault classification detection is proposed based on the HF current difference between two sets of three-phase windings. Due to the novel fault classification, the fault classification detection is simpler than the traditional fault diagnosis, especially when facing so many types of faults. The proposed method can estimate an accurate rotor position under both healthy conditions and an arbitrary open-circuit fault above, which has been validated by experimental results.


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    Title :

    Comprehensive HFSVI-Based Sensorless Control Method for Dual Three-Phase Motor Considering Multiple Open-Circuit Faults


    Contributors:
    Wu, Zheng (author) / Hua, Wei (author) / Cheng, Chenwen (author) / Du, Jinwen (author) / Wang, Yuchen (author)

    Published in:

    Publication date :

    2024-12-01


    Size :

    2681764 byte




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English