The design of operating frequencies and compensation topologies for load-independent output current or output voltage in two-coil wireless power transfer (WPT) system has been widely studied. The three-coil WPT system has been proven to be more efficient and shows a better performance compared to the two-coil WPT system with an increasing transmission distance. However, the research on load-independent output voltage or output current of the three-coil WPT system is still at pilot stage. This paper systematically investigates the load-independent output voltage and output current characteristics of a three-coil WPT system to achieve a constant output voltage (CV) and constant output current (CC) with near zero reactive power, which can simplify the control. The CV and CC characteristics are achieved by well-designed passive parameters of the receiver side compensation. Additionally, a hybrid receiver side compensation with two additional switches for the three-coil WPT system is developed to charge the electric vehicle battery by combining the CC and CV characteristics. Finally, a scaleddown experimental setup with 4-A charging current and 96-V cell voltage is constructed to verify the proposed approach. The experimental results agree well with the theoretical analysis.


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    Titel :

    Analysis and Design of Load-Independent Output Current or Output Voltage of a Three-Coil Wireless Power Transfer System


    Beteiligte:
    Yong Li (Autor:in) / Qiaodi Xu (Autor:in) / Tianren Lin (Autor:in) / Jiefeng Hu (Autor:in) / Zhengyou He (Autor:in) / Ruikun Mai (Autor:in)


    Erscheinungsdatum :

    01.06.2018


    Format / Umfang :

    4132198 byte




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch