电动车无线供电系统多负载模式分析及导轨结构优化设计

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摘要电动车无线供电导轨运行时,会出现多辆车集中在一段导轨取电的现象,即多负载工作模式。针对多负载模式下系统稳定性问题,本文重点分析了多负载系统中负载数量对系统稳定性的影响,得到了负载个数的边界条件;同时,针对多负载模式下大功率供电易引起线圈击穿的问题,提出了一种L型线圈结构和T型磁心结构,在保证功率传输的前提下,有效地降低了供电导轨的自感,确保了多负载系统的安全性。仿真和实验验证了理论分析的正确性。

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关键词 ：无线电能传输, 电动车, 多负载, 边界条件, 耦合机构

Abstract：When electric vehicles run on the wireless power supplying rail, it will appear multi-load working mode that more than one electric vehicles collect the power from one rail. Aimed at the stability problem of multi-load mode, this paper mainly analyzes how the number of loads influences the system stability and gets the boundary condition of the load quantity. Meanwhile, to solve the problem of coils breakdown for high-power supplying, the L coil structure and T magnetic core structure are proposed. The proposed structures effectively reduce the supplying coils’ self-inductance on the premise of guaranteeing the power transfer and ensure the security of multi-load system. At last, the validity of theoretical analysis is verified by simulation and experiment.

Key words： wireless power transfer electric vehicles multi-load boundary condition coupling mechanism

收稿日期: 2019-01-02 出版日期: 2019-08-19

基金资助:国家自然科学基金项目（51777022）; 国网浙江省电力有限公司科技项目（5211NB170008）

引用本文:

王汉丰, 唐春森, 左志平, 吴新刚, 许巍. 电动车无线供电系统多负载模式分析及导轨结构优化设计[J]. 电气技术, 2019, 20(8): 6-1067. Wang Hanfeng, Tang Chunsen, Zuo Zhiping, Wu Xin’gang, Xu Wei. Multi-load mode analysis of wireless supplying system for electric vehicles. Electrical Engineering, 2019, 20(8): 6-1067.

链接本文:

https://dqjs.cesmedia.cn/CN/Y2019/V20/I8/6

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