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Characteristic Analysis of Electromagnetic Force in a High-Power Wireless Power Transfer System

Author

Listed:
  • Xian Zhang

    (Tianjin Key Laboratory of Advanced Electrical Engineering and Energy Technology, Tianjin Polytechnic University, Tianjin 300387, China)

  • Xuejing Ni

    (Tianjin Key Laboratory of Advanced Electrical Engineering and Energy Technology, Tianjin Polytechnic University, Tianjin 300387, China)

  • Bin Wei

    (China Electric Power Research Institute, Beijing 100085, China)

  • Songcen Wang

    (China Electric Power Research Institute, Beijing 100085, China)

  • Qingxin Yang

    (Tianjin Key Laboratory of Advanced Electrical Engineering and Energy Technology, Tianjin Polytechnic University, Tianjin 300387, China)

Abstract

In order to explore the influence of the electromagnetic force (EMF) on the coupling mechanism in a high-power wireless power transfer (WPT) system, the characteristics of the EMF are investigated by theoretical calculation and simulation. The expressions of the EMF on the WPT structure with magnetic shielding are derived in time domain and frequency domain, respectively. The EMF is divided into Lorentz force and Kelvin force. The distribution and changing regularity of the EMF on the coil and the magnetic shield under different exciting currents are solved by the finite element model, and the harmonic of the EMF is analyzed in detail. The results show that the coil is subjected to the EMF in both radial and axial directions. The EMF on the magnetic shield is opposite to the EMF on the coil, and the force between the transmitting coil and the receiving coil is repulsive. The frequency of the EMF is twice that of the system resonant frequency. An experimental prototype is built to prove the correctness of the predicted characteristics. It is shown that the EMF should be carefully considered in the application of high-power WPT systems.

Suggested Citation

  • Xian Zhang & Xuejing Ni & Bin Wei & Songcen Wang & Qingxin Yang, 2018. "Characteristic Analysis of Electromagnetic Force in a High-Power Wireless Power Transfer System," Energies, MDPI, vol. 11(11), pages 1-13, November.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:11:p:3088-:d:181531
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    References listed on IDEAS

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    1. Yang Yang & Mohamed El Baghdadi & Yuanfeng Lan & Yassine Benomar & Joeri Van Mierlo & Omar Hegazy, 2018. "Design Methodology, Modeling, and Comparative Study of Wireless Power Transfer Systems for Electric Vehicles," Energies, MDPI, vol. 11(7), pages 1-22, July.
    2. Gongjun Liu & Bo Zhang & Wenxun Xiao & Dongyuan Qiu & Yanfeng Chen & Jiu Guan, 2018. "Omnidirectional Wireless Power Transfer System Based on Rotary Transmitting Coil for Household Appliances," Energies, MDPI, vol. 11(4), pages 1-16, April.
    3. Kamal Eldin Idris Elnail & Xueliang Huang & Chen Xiao & Linlin Tan & Xu Haozhe, 2018. "Core Structure and Electromagnetic Field Evaluation in WPT Systems for Charging Electric Vehicles," Energies, MDPI, vol. 11(7), pages 1-17, July.
    4. Yang Liu & Bin Li & Mo Huang & Zhijian Chen & Xiuyin Zhang, 2018. "An Overview of Regulation Topologies in Resonant Wireless Power Transfer Systems for Consumer Electronics or Bio-Implants," Energies, MDPI, vol. 11(7), pages 1-22, July.
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    Cited by:

    1. Xian Zhang & Yanan Ren & Lin Sha & Qingxin Yang & Xuejing Ni & Fengxian Wang, 2020. "Analysis of Dynamic Characteristics of Foreign Metal Objects under Electromagnetic Force in High-Power Wireless Power Transfer," Energies, MDPI, vol. 13(15), pages 1-15, July.

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