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Minimizing Leakage Magnetic Field of Wireless Power Transfer Systems Using Phase Difference Control

Author

Listed:
  • Seongho Woo

    (Cho Chun Shik Graduate School of Mobility, Korea Advanced Institute of Science and Technology, Daejeon 34051, Korea)

  • Yujun Shin

    (Cho Chun Shik Graduate School of Mobility, Korea Advanced Institute of Science and Technology, Daejeon 34051, Korea)

  • Changmin Lee

    (Cho Chun Shik Graduate School of Mobility, Korea Advanced Institute of Science and Technology, Daejeon 34051, Korea)

  • Jaewon Rhee

    (Cho Chun Shik Graduate School of Mobility, Korea Advanced Institute of Science and Technology, Daejeon 34051, Korea)

  • Jangyong Ahn

    (Cho Chun Shik Graduate School of Mobility, Korea Advanced Institute of Science and Technology, Daejeon 34051, Korea)

  • Jungick Moon

    (Electronics and Telecommunications Research Institute, Daejeon 34129, Korea)

  • Seokhyeon Son

    (Hyundai Motors, 40, Namyang 18270, Korea)

  • Sanguk Lee

    (Cho Chun Shik Graduate School of Mobility, Korea Advanced Institute of Science and Technology, Daejeon 34051, Korea)

  • Hongseok Kim

    (Cho Chun Shik Graduate School of Mobility, Korea Advanced Institute of Science and Technology, Daejeon 34051, Korea)

  • Seungyoung Ahn

    (Cho Chun Shik Graduate School of Mobility, Korea Advanced Institute of Science and Technology, Daejeon 34051, Korea)

Abstract

In this paper, we propose a method to reduce the leakage magnetic field from wireless power transfer (WPT) systems with series–series compensation topology by adjusting the phase difference between the transmitter (TX) coil current and the receiver (RX) coil current without additional shielding coils or materials. A WPT system employing the proposed method adjusts the phase difference between the TX coil current and RX coil current by tuning a resonant capacitor of the RX coil. The conditions for minimizing the leakage magnetic field are derived, and the range of the resonant capacitor of RX, considering power transfer efficiency and the leakage magnetic field, is proposed. Through simulations and experiments, it is verified that the proposed method can reduce the leakage magnetic field level without any additional materials. For that reason, the proposed method can be suitable for size-limited, weight-limited or cost-limited WPT systems.

Suggested Citation

  • Seongho Woo & Yujun Shin & Changmin Lee & Jaewon Rhee & Jangyong Ahn & Jungick Moon & Seokhyeon Son & Sanguk Lee & Hongseok Kim & Seungyoung Ahn, 2022. "Minimizing Leakage Magnetic Field of Wireless Power Transfer Systems Using Phase Difference Control," Energies, MDPI, vol. 15(21), pages 1-18, November.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:21:p:8202-:d:962435
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    References listed on IDEAS

    as
    1. Silvano Cruciani & Tommaso Campi & Francesca Maradei & Mauro Feliziani, 2020. "Active Shielding Design and Optimization of a Wireless Power Transfer (WPT) System for Automotive," Energies, MDPI, vol. 13(21), pages 1-12, October.
    2. Lantao Huang & Jiahao Zou & Yihan Zhou & Yan Hong & Jing Zhang & Zinan Ding, 2019. "Effect of Vertical Metal Plate on Transfer Efficiency of the Wireless Power Transfer System," Energies, MDPI, vol. 12(19), pages 1-15, October.
    3. Seokhyeon Son & Seongho Woo & Haerim Kim & Jangyong Ahn & Sungryul Huh & Sanguk Lee & Seungyoung Ahn, 2022. "Shielding Sensor Coil to Reduce the Leakage Magnetic Field and Detect the Receiver Position in Wireless Power Transfer System for Electric Vehicle," Energies, MDPI, vol. 15(7), pages 1-15, March.
    4. 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.
    5. Dongwook Kim & Hongseok Kim & Anfeng Huang & Qiusen He & Hanyu Zhang & Seungyoung Ahn & Yuyu Zhu & Jun Fan, 2019. "Analysis and Introduction of Effective Permeability with Additional Air-Gaps on Wireless Power Transfer Coils for Electric Vehicle Based on SAE J2954 Recommended Practice," Energies, MDPI, vol. 12(24), pages 1-11, December.
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