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电动汽车无线充电用方形线圈仿真优化研究
Optimal Simulation Study of Square Coils for Wireless Charging of Electric Vehicles
投稿时间:2018-02-17  修订日期:2018-04-09
DOI:
中文关键词:  电动汽车  无线电能传输  方形线圈  线圈优化  COMSOL
英文关键词:electric vehicle  wireless power transmission  square coil  coil optimization  COMSOL  
基金项目:国家自然科学基金项目;中国博士后科学基金; 江苏省博士后科研资助计划
作者单位E-mail
刘言伟 江南大学物联网工程学院 122178743@qq.com 
卢闻州 江南大学物联网工程学院 luwenzhou@126.com 
董一帆 江南大学物联网工程学院 314597639@qq.com 
陈海英 江南大学物机械工程学院 fly88honey@126.com 
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中文摘要:
      电动汽车由于其节能、环保、低碳等优点受到越来越多的关注。为提高电动汽车无线充电系统传输效率,优化线圈设计,分析了电流源供能的两线圈串串拓扑结构的等效电路模型,并从线圈互感、线圈等效串联电阻以及负载的角度对平面螺旋方形线圈提出了提高充电效率的四个方面,即最优的线圈匝数、最优的线圈边长、更短的传输距离以及最佳负载,并利用COMSOL软件进行了仿真验证。仿真优化结果表明:1) 线圈边长d与传输距离D存在近似优化关系:d=2D;2) 电动汽车无线充电系统存在一组最优参数:传输距离D=45cm,线圈边长d=90cm,线圈匝数N=30,负载RL=80Ω,系统传输效率达到88.36%,从而实现了电动汽车高效率无线充电。
英文摘要:
      Electric vehicles (EVs) have attracted more and more attentions because of their advantages of energy saving, environmental protection, low carbon emission and so on. In order to improve the transmission efficiency of EV wireless charging system and optimize the coil design, an equivalent current-source circuit model with two-coil series-series topology is analyzed, and four optimal aspects, i.e. optimal coil turns, optimal coil side length, shorter transmission distance and optimal load, are achieved to improve the transmission efficiency of the planar spiral square coils using the mutual inductance, the coil equivalent series resistance and the load. It is verified using the COMSOL software. The optimal simulation result shows that: 1) there is an approximately optimal relationship between the coil side length d and the transmission distance D, i.e. d=2D; 2) there is a set of optimal parameters for the EV wireless charging system, i.e. D=45cm, d=90cm, coil turns N=30, load RL= 80Ω and thus system transmission efficiency achieving 88.36% so as the high efficiency transmission of EV wireless charging is realized.
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