Suspension chopper is a high-power electrical equipment for vehicle suspension control. Its performance is crucial to the stability, reliability and comfort of maglev trains. There are a series of problems in the traditional chopper using the H-bridge hard switching mode, especially the problem of voltage spike which cannot be ignored for high-speed maglev trains. In this paper, a phase-shifted full-bridge zero-voltage suspension chopper is proposed, which uses the phase-shifted control signal to realize IGBT zero-voltage turn-on and zero-voltage turn-off, so as to reduce the voltage spike. Firstly, the working principle and control modals of the phase-shifted full-bridge suspension chopper are analyzed. Then, the simulation and experimental test platform are built to verify the effect of reducing the voltage spike. The results show that the phase-shifted full-bridge suspension chopper can effectively reduce the voltage spike, which provides a reference for optimizing and improving the high-speed maglev chopper.


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    Title :

    Research on phase-shifted full-bridge suspension chopper


    Contributors:
    Zhu, Pengbo (author) / Li, Zhengfeng (author) / Liu, Xin (author) / Li, Xiaolong (author)

    Conference:

    Seventh International Conference on Electromechanical Control Technology and Transportation (ICECTT 2022) ; 2022 ; Guangzhou,China


    Published in:

    Proc. SPIE ; 12302


    Publication date :

    2022-11-23





    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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