Multiphase drives have been proposed in high power safety-critical applications because of their fault-tolerant advantage without needing any extra hardware. Traditional fault-tolerant control methods mainly are mainly focused on the optimized current control with asymmetrical machine model. To realize precise current control and flux observation, a virtual winding method is firstly proposed to re-build the symmetrical model when one or several phases are absent in fault mode. The machine in fault can be dealt as a normally symmetrical machine with some virtual winding instead of the fault winding. Then the proposed method is verified by simulation model of multiphase machine. Finally, a five-phase induction machine experiment platform is built and experimental results demonstrate that the proposed control algorithm can significantly reduce the torque ripple under an open-phase condition and achieve the smooth transition from pre- to post-fault situations.


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    Title :

    Fault-tolerant control of multiphase induction machine drives based on virtual winding method


    Contributors:
    Zhong Peng (author) / Zheng, Zedong (author) / Li, Yongdong (author) / Liu, Zicheng (author)


    Publication date :

    2017-06-01


    Size :

    2057490 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English




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