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Wireless Power Charger Based on Class E Amplifier with the Maximum Power Point Load Consideration

Author

Listed:
  • Weili Dai

    (College of Internet of Things Engineering, Hohai University, Changzhou 213022, China
    Jiangsu Key Laboratory of Power Transmission and Distribution Equipment Technology, Hohai University, Changzhou 213022, China)

  • Wei Tang

    (College of Internet of Things Engineering, Hohai University, Changzhou 213022, China
    Jiangsu Key Laboratory of Power Transmission and Distribution Equipment Technology, Hohai University, Changzhou 213022, China)

  • Changchun Cai

    (College of Internet of Things Engineering, Hohai University, Changzhou 213022, China
    Jiangsu Key Laboratory of Power Transmission and Distribution Equipment Technology, Hohai University, Changzhou 213022, China)

  • Lihua Deng

    (College of Internet of Things Engineering, Hohai University, Changzhou 213022, China
    Jiangsu Key Laboratory of Power Transmission and Distribution Equipment Technology, Hohai University, Changzhou 213022, China)

  • Xiaofeng Zhang

    (College of Internet of Things Engineering, Hohai University, Changzhou 213022, China)

Abstract

The construction of an electromagnetic coupling power transfer system is introduced in this paper. Considering the characteristics of the battery charger, a novel parameter design method based on the load of the maximum power transfer point is proposed. Then, the compensator, resonant circuits, and some key parameters of the electromagnetic coupler are discussed in detail by constructing a mutual inductance model to carry out impedance calculation and analysis. Coupling coefficient influenced by different magnetic circuits and coil distribution were analyzed by building a finite element model and an equivalent magnetic circuit. Moreover, impedance matching and compensation network parameters were theoretically calculated and simulated. Finally, a wireless power charger based on an open-loop class E amplifier with the maximum power point load consideration was manufactured. Simulation and experiments were done to verify the analyses, and the capability of 4.2 W power delivery at a distance of 10 mm and a peak system efficiency exceeding 72% were demonstrated.

Suggested Citation

  • Weili Dai & Wei Tang & Changchun Cai & Lihua Deng & Xiaofeng Zhang, 2018. "Wireless Power Charger Based on Class E Amplifier with the Maximum Power Point Load Consideration," Energies, MDPI, vol. 11(9), pages 1-13, September.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:9:p:2378-:d:168717
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    Citations

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    Cited by:

    1. Alexander Sutor & Martin Heining & Rainer Buchholz, 2019. "A Class-E Amplifier for a Loosely Coupled Inductive Power Transfer System with Multiple Receivers," Energies, MDPI, vol. 12(6), pages 1-15, March.
    2. Ching-Yao Liu & Guo-Bin Wang & Chih-Chiang Wu & Edward Yi Chang & Stone Cheng & Wei-Hua Chieng, 2021. "Derivation of the Resonance Mechanism for Wireless Power Transfer Using Class-E Amplifier," Energies, MDPI, vol. 14(3), pages 1-22, January.

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