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Shielding Sensor Coil to Reduce the Leakage Magnetic Field and Detect the Receiver Position in Wireless Power Transfer System for Electric Vehicle

Author

Listed:
  • Seokhyeon Son

    (Division of Future Vehicle, Korea Advanced Institute of Science and Technology, Daejeon 34051, Korea)

  • Seongho Woo

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

  • Haerim Kim

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

  • Jangyong Ahn

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

  • Sungryul Huh

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

  • Sanguk Lee

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

  • Seungyoung Ahn

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

Abstract

This paper proposes a shielding sensor (SS) coil to solve the misalignment issue and the leakage magnetic field issue of the wireless power transfer (WPT) system for electric vehicles (EVs). The misalignment issue and leakage magnetic field issue must be solved because they can cause problems with power transfer efficiency reduction and electronic device malfunction. To solve these problems, the proposed SS coils are located over the Tx coil. The newly created mutual inductance between the Tx coil and the SS coil is used to detect the misalignment of the receiver in the Tx coil. In addition, the current phase of the SS coil is adjusted through impedance control of the SS coil to reduce the leakage magnetic field. The proposed SS coils were applied to the standard SAE J2954 model for the wireless charging of an EV. The WPT3/Z2 model of SAE J2954 with output power of 10 kW was simulated to compare the shielding effect according to the power transfer efficiency, and it was confirmed that a shielding effect of 76% was shown under the condition of a 3% reduction in the power transfer efficiency. In addition, the occurrence and direction of the misalignment between the receiver and the Tx coil were confirmed by using the tendency of mutual inductance between each SS coil and the Tx coil. In addition, as in the simulation result, the shielding effect and tendency were confirmed in an experiment conducted with the output power downscaled to 500 W.

Suggested Citation

  • 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.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:7:p:2493-:d:781656
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    References listed on IDEAS

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    1. Tommaso Campi & Silvano Cruciani & Francesca Maradei & Mauro Feliziani, 2019. "Magnetic Field during Wireless Charging in an Electric Vehicle According to Standard SAE J2954," Energies, MDPI, vol. 12(9), pages 1-24, May.
    2. Karam Hwang & Jaehyoung Park & Dongwook Kim & Hyun Ho Park & Jong Hwa Kwon & Sang Il Kwak & Seungyoung Ahn, 2015. "Autonomous Coil Alignment System Using Fuzzy Steering Control for Electric Vehicles with Dynamic Wireless Charging," Mathematical Problems in Engineering, Hindawi, vol. 2015, pages 1-14, December.
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    Cited by:

    1. Young-Jin Park, 2022. "Next-Generation Wireless Charging Systems for Mobile Devices," Energies, MDPI, vol. 15(9), pages 1-4, April.
    2. 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.
    3. Emrullah Aydin & Mehmet Timur Aydemir & Ahmet Aksoz & Mohamed El Baghdadi & Omar Hegazy, 2022. "Inductive Power Transfer for Electric Vehicle Charging Applications: A Comprehensive Review," Energies, MDPI, vol. 15(14), pages 1-24, July.
    4. Ahmed A. S. Mohamed & Ahmed A. Shaier & Hamid Metwally & Sameh I. Selem, 2022. "An Overview of Dynamic Inductive Charging for Electric Vehicles," Energies, MDPI, vol. 15(15), pages 1-59, August.

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