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Study on the transmission characteristics of magnetic resonance wireless power transfer system

Published online by Cambridge University Press:  02 June 2017

Xiufang Wang ,
Yu Wang ,
Yilang Liang ,
Guangcheng Fan ,
Xinyi Nie ,
Zhongming Yan  and
Qingying Xu
Xiufang Wang
Affiliation:
School of Electrical Engineering, Southwest Jiaotong University, Chengdu, Sichuan, P.R. China School of Physics and Technology, Southwest Jiaotong University, Chengdu, Sichuan, P.R. China
Yu Wang
Affiliation:
School of Electrical Engineering, Southwest Jiaotong University, Chengdu, Sichuan, P.R. China
Yilang Liang
Affiliation:
School of Physics and Technology, Southwest Jiaotong University, Chengdu, Sichuan, P.R. China
Guangcheng Fan
Affiliation:
School of Electrical Engineering, Southwest Jiaotong University, Chengdu, Sichuan, P.R. China
Xinyi Nie
Affiliation:
School of Electrical Engineering, Southwest Jiaotong University, Chengdu, Sichuan, P.R. China
Zhongming Yan*
Affiliation:
School of Electrical Engineering, Southwest Jiaotong University, Chengdu, Sichuan, P.R. China
Qingying Xu
Affiliation:
School of Electrical Engineering, Southwest Jiaotong University, Chengdu, Sichuan, P.R. China
*
Corresponding author: Z. Yan Email: 6885391@qq.com
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Abstract

Magnetic coupling resonance wireless power transfer technology has attracted worldwide attention in recent years due to its mid-range, non-radiative, and high-efficiency power transfer. However, in regard to its practical applications, there are still some issues that need to be considered and studied with respect to coil design, such as coil structure, and parasitic parameter extraction. This paper investigated the characteristics of magnetic coupling resonance wireless power transfer systems with different coil structures, including circular coils and rectangular coils arranged in parallel. We calculated the magnetic field distributions and mutual inductances by subdividing the receiving coils and computing the magnetic flux density of each subdivision. The proposed analysis was validated by means of the finite element analysis and the experimental results. We investigated the effects of the coil's structure, and topological structures, on the power transfer efficiency. The results demonstrate that using circular coils in parallel is more advantageous than using rectangular coils.

Keywords

EM field theoryWireless power transfer and energy harvesting
Type
Industrial and Engineering Paper
Information
International Journal of Microwave and Wireless Technologies , Volume 9 , Issue 9 , November 2017 , pp. 1799 - 1807
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2017 

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