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    Electromagnetic shielding techniques in the wireless power transfer system for charging inspection robot application

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    Article (8.477Mb)
    Date
    2021-07-05
    Author
    Jiao, Chaoqun
    Xu, Yang
    Li, Xiang
    Zhang, Xiumin
    Zhao, Zhibin
    Pang, Chengzong
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    Citation
    Jiao, C., Xu, Y., Li, X., Zhang, X., Zhao, Z., & Pang, C. (2021). Electromagnetic shielding techniques in the wireless power transfer system for charging inspection robot application. International Journal of Antennas and Propagation, 2021 doi:10.1155/2021/9984595
    Abstract
    Aiming at eliminating the leakage of magnetic fields from the wireless power transfer (WPT) system, the structural and working characteristics of the WPT system for the inspection robot are analyzed and an electromagnetic shielding method combining passive shielding and active shielding is proposed in this paper. Firstly, we simulated the magnetic field distribution of the WPT system in Maxwell. Secondly, passive shielding is configured in the WPT system, and the material, size, and position of the passive shielding are studied. Then, we add active shielding to areas where passive shielding cannot achieve a good shielding effect. Based on the analysis and summary of the two methods, we shield the WPT system in the horizontal direction with the appropriate size and distance of aluminum plate, and in the vertical direction, we use the active shielding coils. Simulation and experimental results show that the scheme only slightly reduces the transmission efficiency of the system (from 80.2% to 77.6%), but the shielding ability is 34.06% higher than that of only aluminum plates. The excellent effect of the proposed shielding method is verified in our experiment.
    Description
    Copyright © 2021 Chaoqun Jiao et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
    URI
    https://doi.org/10.1155/2021/9984595
    https://soar.wichita.edu/handle/10057/21688
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