基于渗透型导轨的EV-DWPT系统输出稳定研究
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河海大学能源与电气学院

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Research on the Output Stability of the EV-DWPT System Based on the Permeable Rails
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School of Energy and Electricity, Hohai University

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    摘要:

    文章针对电动汽车动态无线充电系统(EV-DWPT)的多段短导轨型结构中存在的动态过程中原副边线圈之间互感波动而导致的功率跌落问题,给出了一种基于脉冲同步控制方法的渗透型导轨结构的优化设计技术。首先,基于LCC-S谐振网络拓扑的双发射单接收电路进行分析,推导出输出功率及原副边线圈电流的表达式;其次,通过COMSOL仿真分析并结合脉冲同步控制技术分析了渗透区域长度及补偿线圈匝数对互感值的影响;最后,通过PLECS仿真平台对电路模型进行了仿真。结果表明,基于脉冲同步控制下所述耦合机构动态过程互感波动为3.3%,相较于单激励模式的56%及传统矩形线圈的32%的互感波动得到了很好的抑制,仿真得到文章所设计的EV-DWPT系统功率波动为±3.2%。

    Abstract:

    Based on the power drop caused by the mutual inductance fluctuation between the primary and the secondary coils in the dynamic process of the short-rail structure in the EV-DWPT system, this paper proposes an optimization design technology utilizing the pulse synchronization control method for the permeable rails structure. Firstly, the expressions of the output power and the primary and secondary coil current were deduced by analyzing the dual transmitter and single receiver circuit based on the LCC-S resonant topology. Secondly, the effects that the length of the permeable areas and the number of the coils on mutual inductance were analyzed by COMSOL and pulse synchronization control method. Finally, the simulation model of the circuit was established through the simulation platform PLECS. The simulation results show, by utilizing the pulse synchronization control method, the fluctuation of the mutual inductance is about 3% in the dynamic process of the coupler. Comparing to the 56% of the single exciting mode and the 32% of the traditional rectangular coil, the fluctuation of the mutual inductance has been greatly inhibited. And the output power fluctuation of the EV-DWPT system designed in this paper is ±3.2%. Keywords:wireless power transfer, EV-DWPT, impulsive synchronization, permeable rail, power fluctuation

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  • 收稿日期:2021-08-16
  • 最后修改日期:2021-12-02
  • 录用日期:2021-12-06
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