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Analysis of transmission performance on wireless power transfer system with metamaterial

Published online by Cambridge University Press:  23 May 2023

Xingming Fan ,
Haonan Zhang Open the ORCID record for Haonan Zhang [Opens in a new window]  and
Xin Zhang
Xingming Fan
Affiliation:
Department of Electrical Engineering and Automation, Guilin University of Electronic Technology, Guilin, China
Haonan Zhang
Affiliation:
Department of Electrical Engineering and Automation, Guilin University of Electronic Technology, Guilin, China
Xin Zhang*
Affiliation:
Department of Electrical Engineering and Automation, Guilin University of Electronic Technology, Guilin, China
*
Corresponding author: Xin Zhang, Email: plxxaim@guet.edu.cn
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Abstract

In order to solve the problems of low power transfer efficiency (PTE) and limited distance in magnetic coupling resonant wireless power transfer (MCR-WPT) technology. In this paper, based on the magnetic field control ability of metamaterials (MMs), the way to improve the performance of MCR-WPT systems is studied. First, the influence of MMs on the coupling of MCR-WPT system is theoretically analyzed by establishing an equivalent circuit model. Through a series of simulations and experiments, the relationships between the PTE and the array and placement of the MM slab are investigated. The results demonstrate that when one MM slab is placed in the middle, near the Tx coil or the Rx coil, the optimal PTE can be obtained by inserting one slab with $6 \times 6$, $1 \times 1$, and $6 \times 6$ arrays, respectively. Moreover, the systems with multilayer MM slabs are also studied. The measured PTEs on one, two, and three layers of MM slabs can increase by 20.6%, 29.3%, and 22.6%, respectively. The efficiency improvement capability of one MM slab is better than three slabs but worse than two slabs. This paper discusses the application of MMs in MCR-WPT systems, which has a certain reference significance.

Keywords

magnetic coupling resonant wireless power transfermetamaterialmultilayerpower transfer efficiency
Type
Research Paper
Information
International Journal of Microwave and Wireless Technologies , First View , pp. 1 - 9
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Copyright
© The Author(s), 2023. Published by Cambridge University Press in association with the European Microwave Association

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