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Double-Coil Dynamic Shielding Technology for Wireless Power Transmission in Electric Vehicles

Author

Listed:
  • Yuan Li

    (School of Electrical and Information Engineering, Tianjin University, Tianjin 300072, China)

  • Shumei Zhang

    (School of Electrical and Information Engineering, Tianjin University, Tianjin 300072, China)

  • Ze Cheng

    (School of Electrical and Information Engineering, Tianjin University, Tianjin 300072, China)

Abstract

During wireless charging, the transmission distance of electric vehicles varies, resulting in different levels of electromagnetic field leakage. An improved active shielding technology, the double-coil dynamic shielding technology, is proposed in this paper for wireless power transfer (WPT) systems with different transmission distances. Modeling, simulation, and experiments are performed for the WPT system with a double-coil dynamic shielding scheme and compared with other cases. The results show that the proposed double-coil dynamic shielding scheme is able to shield approximately 70% of the electromagnetic field leakage for WPT systems at different transmission distances. In addition, it essentially causes no degradation in transmission efficiency (only 3.1%). The effectiveness and feasibility of the proposed scheme are verified.

Suggested Citation

  • Yuan Li & Shumei Zhang & Ze Cheng, 2021. "Double-Coil Dynamic Shielding Technology for Wireless Power Transmission in Electric Vehicles," Energies, MDPI, vol. 14(17), pages 1-20, August.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:17:p:5271-:d:621749
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    References listed on IDEAS

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    1. Linlin Tan & Kamal Eldin Idris Elnail & Minghao Ju & Xueliang Huang, 2019. "Comparative Analysis and Design of the Shielding Techniques in WPT Systems for Charging EVs," Energies, MDPI, vol. 12(11), pages 1-20, June.
    2. Yujun Shin & Jaehyoung Park & Haerim Kim & Seongho Woo & Bumjin Park & Sungryul Huh & Changmin Lee & Seungyoung Ahn, 2021. "Design Considerations for Adding Series Inductors to Reduce Electromagnetic Field Interference in an Over-Coupled WPT System," Energies, MDPI, vol. 14(10), pages 1-28, May.
    3. Feng Wen & Xueliang Huang, 2016. "Optimal Magnetic Field Shielding Method by Metallic Sheets in Wireless Power Transfer System," Energies, MDPI, vol. 9(9), pages 1-15, September.
    4. Li-Chuan Tang & Shyr-Long Jeng & Edward-Yi Chang & Wei-Hua Chieng, 2021. "Variable-Frequency Pulse Width Modulation Circuits for Resonant Wireless Power Transfer," Energies, MDPI, vol. 14(12), pages 1-25, June.
    5. Alicia Triviño & José M. González-González & José A. Aguado, 2021. "Wireless Power Transfer Technologies Applied to Electric Vehicles: A Review," Energies, MDPI, vol. 14(6), pages 1-21, March.
    6. Jacopo Colussi & Alessandro La Ganga & Roberto Re & Paolo Guglielmi & Eric Armando, 2021. "100 kW Three-Phase Wireless Charger for EV: Experimental Validation Adopting Opposition Method," Energies, MDPI, vol. 14(8), pages 1-18, April.
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    Cited by:

    1. Nadir Benalia & Kouider Laroussi & Idriss Benlaloui & Abdellah Kouzou & Abed-Djebar Bensalah & Ralph Kennel & Mohamed Abdelrahem, 2023. "Optimized Power Pads for Charging Electric Vehicles Based on a New Rectangular Spiral Shape Design," Sustainability, MDPI, vol. 15(2), pages 1-14, January.

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