In order to solve the problem of increased system weight and cost of current wireless power transfer (WPT) systems with ferrite, a Halbach-type coupler WPT system with flux-shielding function for linear motor has been proposed in this article. It is characterized by high transmitting efficiency, better shielding ability, and antioffset ability. First, the topology and working mechanism of the proposed coupler have been analyzed. Second, considering the coupling ability and magnetic flux density, the parameters of the proposed Halbach-type coupler have been optimized. Third, the prototype of the proposed system has been built and tested, compared with the current DD-type coupler WPT system. Fourth, the magnetic field shielding ability and antioffset ability of the proposed Halbach-type coupler and DD-type coupler have been analyzed, respectively. The experimental results have verified that the WPT system based on the Halbach-type coupler has more promising magnetic field shielding ability and better resistance to the $z$ -axis offset, compared with the WPT system based on the DD-type coupler. The efficiency of the WPT system based on the proposed Halbach coupler can achieve 80.5% and the maximum output power reaches 69.5 W at 11 mm.


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    Title :

    Halbach-Type Coupler WPT System With Flux-Shielding Function for Linear Motor


    Contributors:
    Wang, Longyang (author) / Li, Jiangui (author) / Chen, Chen (author) / Zhu, Guofu (author) / Chen, Huiying (author) / Li, Qiang (author)


    Publication date :

    2021-12-01


    Size :

    24804849 byte




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English



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