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Control of WPT Transmitter Coils for Power Distribution to Two Receiver Coils without Feedback

Author

Listed:
  • Jun Heo

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

  • Sungyeal Park

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

  • Sang-Won Kim

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

  • In-Kui Cho

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

  • Songnam Hong

    (Electronic Engineering, Hanyang University, Seoul 04763, Korea)

  • Yong Bae Park

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

Abstract

This paper proposes the algorithm to control the current ratio of the transmitting (Tx) coils for proper power distribution to the two receiving (Rx) coils in wireless power transfer (WPT) system. The proposed algorithm assumes that each Rx coil appears at different times to consider the situation where multiple users request power transmission as practically as possible. That is, suppose the second Rx coil enters the charging space later than the first Rx coil. When each coil enters the charging space, only the Tx coil is used to obtain the value required for calculation. Using the obtained result, the optimized Tx coil current is calculated by the proposed algorithm and proper power distribution to both Rx coils is achieved. Three Tx coils and two Rx coils are constructed using the ANSYS MAXWELL simulation tool. As a result of applying the proposed algorithm, it was confirmed that a similar level of power was transmitted between 40∼60%, respectively. The sum of the power transmitted to the two Rx coils also appeared as more than 75%.

Suggested Citation

  • Jun Heo & Sungyeal Park & Sang-Won Kim & In-Kui Cho & Songnam Hong & Yong Bae Park, 2021. "Control of WPT Transmitter Coils for Power Distribution to Two Receiver Coils without Feedback," Energies, MDPI, vol. 14(20), pages 1-10, October.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:20:p:6828-:d:659549
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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.

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