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A Resonant Coupling Power Transfer System Using Two Driving Coils

Author

Listed:
  • Changping Li

    (College of Communication and Information Engineering, Chongqing University of Posts and Telecommunications, Chongqing 400065, China)

  • Bo Wang

    (Division of Information and Computing Technology, College of Science and Engineering, Hamad Bin Khalifa University, Education City 34110, Qatar)

  • Ruining Huang

    (School of Mechanical Engineering and Automation, Harbin Institute of Technology, Shenzhen 518055, China)

  • Ying Yi

    (Division of Information and Computing Technology, College of Science and Engineering, Hamad Bin Khalifa University, Education City 34110, Qatar)

Abstract

This paper presents a resonance-based wireless power transfer (R-WPT) system using two multi-layer multi-turn inductor coils on the transmission side and a third coil on the receiver side. We theoretically characterized and optimized the system in terms of quality factor ( Q factor) of the coils and power transfer efficiency (PTE). In our R-WPT prototype, the alternating currents (AC) were simultaneously applied to two transmitter coils, which, in turn, transferred power wirelessly to the secondary coil with a 3-mm radius on the receiving end. Owing to the optimization of the inductive coils, all of the coils achieved the highest Q -factor and PTE at the resonance frequency of 2.9 MHz, and the transfer distance could be extended up to 30 mm. The results show that the PTE was greater than 74% at a separation distance of 5 mm and about 38.7% at 20 mm. This is distinctly higher than that of its 2 and 3-coil counterparts using only one driving coil.

Suggested Citation

  • Changping Li & Bo Wang & Ruining Huang & Ying Yi, 2019. "A Resonant Coupling Power Transfer System Using Two Driving Coils," Energies, MDPI, vol. 12(15), pages 1-11, July.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:15:p:2914-:d:252694
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    References listed on IDEAS

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    1. SangWook Park & Minhyuk Kim, 2016. "Numerical Exposure Assessment Method for Low Frequency Range and Application to Wireless Power Transfer," PLOS ONE, Public Library of Science, vol. 11(11), pages 1-15, November.
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    Cited by:

    1. You-Chen Weng & Chih-Chiang Wu & Edward Yi Chang & Wei-Hua Chieng, 2021. "Minimum Power Input Control for Class-E Amplifier Using Depletion-Mode Gallium Nitride High Electron Mobility Transistor," Energies, MDPI, vol. 14(8), pages 1-16, April.

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