Research and Analysis on Coupling Coils of Wireless Charging Systems for Intelligent Road

被引：0
作者：
Yang Y. [1 ]
Zhang J.-P. [2 ]
Cao Y.-B. [2 ]
Sun G.-Q. [2 ]
Hu Z. [2 ]
机构：
[1] School of Automobile, Chang'an University, Shaanxi, Xi'an
[2] School of Highway, Chang'an University, Shaanxi, Xi'an
来源：
Zhongguo Gonglu Xuebao/China Journal of Highway and Transport | 2022年 / 35卷 / 07期
关键词：
coupling coils; finite element analysis; interoperability; road engineering; wireless charging;
D O I：
10.19721/j.cnki.1001-7372.2022.07.009
中图分类号：
学科分类号：
摘要：
The interoperability of wireless charging coils is a key performance indicator for the intelligent road wireless charging systems. In order to analyze the interoperability of the coupling coil, this paper established the simulation model of the wireless charging system and the coupling coil firstly. The three coils of different shapes and corresponding sizes were selected as the transmitting coil and the receiving coil, using the software COMSOL Multiphysics to analyze the influence of the combination of different coil shapes and sizes on the efficiency of the wireless transmission system and the interoperability of different coupling coils. Moreover, Matlab/Simulink was used to simulate the transmission efficiency of the wireless charging system. In order to analyze the accuracy of the simulation results, the experimental device transmitted by wireless energy was tested and verified in our lab. The results are demonstrated that with the continuous increase of the transmission distance of the coil, the self-inductance of the coil is unchanged and the mutual inductance is continuously reduced, and the coupling coefficient and the output efficiency of the system are also continuously reduced. The interoperability of circular coils is better than that of square coils, among which the interoperability of square-square coupled coils is the worst, and the interoperability of circular-circular coupled coils is the best. Its maximum transmission distance is increased by 9%-12%. The final results are also shown that the large size coil has better interoperability than the small size coil, and the size of the coil has more influence on interoperability than the shape of the coil. The final results provide a theoretical basis for the intelligent road wireless charging system. © 2022 Xi'an Highway University. All rights reserved.
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页码：113 / 125
页数：12
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