Study of a Double-Layer Passive Magnetic Shielding System for Electric Vehicle WPT

被引：0
|
作者：
Zhang X. [1 ]
Ren L. [1 ]
Kong P. [3 ]
Xiong X. [1 ]
Li Z. [1 ,2 ,3 ]
机构：
[1] College of Electrical and Information Engineering, Hunan University of Technology, Zhuzhou
[2] College of Electrical and Information Engineering, Hunan University, Changsha
[3] College of Railway Transportation, Hunan University of Technology, Zhuzhou
来源：
Progress In Electromagnetics Research C | 2023年 / 137卷
关键词：
D O I：
10.2528/PIERC23042103
中图分类号：
学科分类号：
摘要：
In the wireless power transfer (WPT) system of electric vehicles, the magnetic shielding performance often comes at the expense of the transmission efficiency. How to maintain high transmission efficiency while reducing magnetic leakage is a challenge. For this reason, this paper proposes a double-layer passive magnetic shielding coil structure for an electric vehicle WPT system. First, a leakage optimization method is given, and the optimal parameters for each shielding coil are obtained with this method. Second, according to the obtained coil parameters, a WPT system with magnetic shielding for electric vehicles is developed. The correctness of the proposed structure and method is verified by simulation and experiment. Finally, when the system output is 4 kW, the proposed shielding structure not only reduces the maximum leakage field in the target area by 54.64%, but also has a transmission efficiency of 94.8%. © 2023, Electromagnetics Academy. All rights reserved.
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页码：65 / 79
页数：14
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