This article proposes a modular seven-leg switched reluctance motor (SRM) drive with a flexible winding configuration and fault-tolerant capability. In traditional SRM drives, the winding connection is fixed, where the speed regulation range and fault-tolerant ability are both limited. To solve these issues, a modular seven-leg drive topology is proposed, where each phase winding is divided into two segments, and the winding connection can be flexibly switched to achieve a wide speed range. At low speed, the winding segments are connected in series for a higher output torque, while the parallel connection is employed at high speed to extend the speed range. In addition, a swift and smooth online winding switching process is achieved, where there are no current or speed shocks. Furthermore, owing to the flexible winding connection in the proposed topology, effective fault-tolerant strategies are developed to deal with the open-circuit faults in both series and parallel connections, which can maintain the output capability and avoid large torque ripples when open-circuit faults occur. Meanwhile, the proposed drive topology is constructed by commercial half-bridge modules and is suitable for industrial applications. Simulations and experiments are carried out on a three-phase SRM prototype to verify the feasibility of the proposed scheme.


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    Title :

    Modular Seven-Leg Switched Reluctance Motor Drive With Flexible Winding Configuration and Fault-Tolerant Capability


    Contributors:
    Gan, Chun (author) / Li, Xue (author) / Yu, Zhiyue (author) / Ni, Kai (author) / Wang, Shuanghong (author) / Qu, Ronghai (author)


    Publication date :

    2023-06-01


    Size :

    5550163 byte




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English



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