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Position Estimation of Multiple Receiving Coils and Power Transmission Control for WPT without Feedback

Author

Listed:
  • Jun Heo

    (Department of AI Convergence Network, Ajou University, Suwon 16499, Republic of Korea)

  • Sang-Won Kim

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

  • In-Kui Cho

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

  • Yong Bae Park

    (Department of AI Convergence Network, Ajou University, Suwon 16499, Republic of Korea
    Department of Electrical and Computer Engineering, Ajou University, Suwon 16499, Republic of Korea)

Abstract

It is important to determine the position of the receiver (Rx) coils in wireless power transfer (WPT) system, and to control the power transmitted to the Rx coil based on this result. In particular, in a situation where there is no feedback between the primary side and the secondary side, it is difficult to control the received power because the information is limited. In this paper, a method for determining the position of the Rx coils and controlling the received power using limited parameters in a feedback-free WPT system is proposed. The proposed method is verified by constructing a 4 × 2 WPT system, and it is validated that the simulation result and the experimental result are consistent well. Furthermore, arbitrary power can be transmitted to the Rx coil based on the result of the position of the Rx coil. The experiment is conducted by transmitting about 1 W to Rx 1 and Rx 2, and the efficiency for Rx 1 is about 32.93 % , Rx 2 is 25.03 % , and the overall efficiency is confirmed to be 57.96 % .

Suggested Citation

  • Jun Heo & Sang-Won Kim & In-Kui Cho & Yong Bae Park, 2022. "Position Estimation of Multiple Receiving Coils and Power Transmission Control for WPT without Feedback," Energies, MDPI, vol. 15(22), pages 1-11, November.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:22:p:8621-:d:975622
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    References listed on IDEAS

    as
    1. Karam Hwang & Jaeyong Cho & Dongwook Kim & Jaehyoung Park & Jong Hwa Kwon & Sang Il Kwak & Hyun Ho Park & Seungyoung Ahn, 2017. "An Autonomous Coil Alignment System for the Dynamic Wireless Charging of Electric Vehicles to Minimize Lateral Misalignment," Energies, MDPI, vol. 10(3), pages 1-20, March.
    2. Tommaso Campi & Silvano Cruciani & Francesca Maradei & Mauro Feliziani, 2021. "Efficient Wireless Drone Charging Pad for Any Landing Position and Orientation," Energies, MDPI, vol. 14(23), pages 1-14, December.
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