In this article, a novel dual-set permanent magnet (PM) flux-switching (DSPM-FS) machine is proposed for the improvement of torque density and fault-tolerance capability. Originating from a flux-switching permanent magnet (FSPM) machine with a U-shaped PM array, fault-tolerance stator teeth are first introduced in the stator slots to prevent the risk of short-circuit faults between coils of different phases. Subsequently, aiming to enhance the torque generation, a set of surface-mounted PM is added to the fault-tolerance teeth. Due to a parallel flux circuit, the phase flux linkage is greatly increased, further improving the no-load back electromotive force (EMF). Meanwhile, a magnetomotive force (MMF)-permeance model is established, which reveals that the amplitudes of the main working harmonics of the DSPM-FS machine are significantly elevated. Moreover, the proposed and conventional machines are comprehensively compared regarding various electromagnetic performances. Consequently, the no-load back EMF and output torque of the proposed machine are increased by 43.89% and 31.47%, respectively. Additionally, the proposed machine showcases a comparable overload performance compared to the conventional machine. Furthermore, the fault-tolerance ability and power efficiency of the proposed DSPM-FS machine also exhibit notable improvement. Finally, a prototype is fabricated and tested to verify the performance of the proposed machine.


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    Title :

    Design of a Dual-Set Permanent Magnet Flux-Switching Machine With Enhanced Torque Density and Fault-Tolerance Capability


    Contributors:
    Bi, Yanding (author) / Fu, Weinong (author) / Niu, Shuangxia (author) / Zhao, Xing (author) / Huang, Jiahui (author)


    Publication date :

    2024-12-01


    Size :

    7611011 byte




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




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