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自动导引车无线充电系统中发射线圈优化设计
Optimization Design of Transmitting Coil for Automated Guided Vehicle Wireless Charging System
投稿时间:2018-02-03  修订日期:2018-05-03
DOI:
中文关键词:  无线充电  线圈优化  有限元仿真  自动导引车
英文关键词:wireless charging  coil optimization  finite element simulation  Automated Guided Vehicle
基金项目:
作者单位E-mail
付振勇 青岛大学电气工程学院 512725461@qq.com 
王春芳 青岛大学电气工程学院 qduwcf@163.com 
李聃 青岛鲁渝能源科技有限公司 lidan@wireless-power.com.cn 
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中文摘要:
      为了解决无线充电系统中线圈间耦合系数小、充电效率低的问题,提出一种在不同传输距离下发射线圈和接收线圈半径匹配的优化设计方法。首先建立了该无线充电系统的等效电路,推导出传输效率与互感和线圈内阻的关系;其次对平面环形线圈进行了等效建模,得到了两共轴平行圆线圈间互感公式;然后在特定接收线圈下,利用线圈间互感公式和有限元仿真得到了平均半径比λ与传输距离d的关系并在自动导引车的充电距离下,优化设计了发射线圈的内外半径;最后对优化前后发射线圈进行了对比实验。实验结果表明优化后发射线圈可以明显提升系统的传输效率,从而验证了所提设计方法的正确性。
英文摘要:
      In order to solve the that low coupling coefficient between coils and low charging efficiency for wireless charging system, a method for matching the radius of transmitting and receiving coil under different transmission distances was proposed. Firstly, equivalent circuit of the wireless charging system was established, and relationship between transmission efficiency and mutual inductance and internal resistance of the system was derived. Secondly, the planar loop coil was equivalently modeled, and the mutual inductance between two coaxial coils was obtained. Then, under the specific receiving coil, the relationship between average radius ratio λ and the transmission distance d was obtained by using the mutual inductance formula and the finite element simulation, and inside and outside radius of the transmitting coil was designed under the charging distance of the Automated Guided Vehicle. Finally, a comparison experiment of before and after optimization of the transmitting coil was carried out. The experimental results show that the optimized transmitting coil obviously improve the transmission efficiency of the system, and verify the correctness of the proposed design method.
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