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Derivation of the Resonance Mechanism for Wireless Power Transfer Using Class-E Amplifier

Author

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  • Ching-Yao Liu

    (Department of Mechanical Engineering, College of Engineering, National Chiao Tung University, Hsinchu 30010, Taiwan)

  • Guo-Bin Wang

    (Department of Mechanical Engineering, College of Engineering, National Chiao Tung University, Hsinchu 30010, Taiwan)

  • Chih-Chiang Wu

    (Mechanical and Mechatronics Systems Research Laboratories, Industrial Technology Research Institute, Hsinchu 31040, Taiwan)

  • Edward Yi Chang

    (Department of Material Science and Engineering, College of Engineering, National Chiao Tung University, Hsinchu 30010, Taiwan)

  • Stone Cheng

    (Department of Mechanical Engineering, College of Engineering, National Chiao Tung University, Hsinchu 30010, Taiwan)

  • Wei-Hua Chieng

    (Department of Mechanical Engineering, College of Engineering, National Chiao Tung University, Hsinchu 30010, Taiwan)

Abstract

In this study, we investigated the resonance mechanism of 6.78 MHz resonant wireless power transfer (WPT) systems. The depletion mode of a gallium nitride high-electron-mobility transistor (GaN HEMT) was used to switch the states in a class-E amplifier circuit in this high frequency. The D-mode GaN HEMT without a body diode prevented current leakage from the resonant capacitor when the drain-source voltage became negative. The zero-voltage switching control was derived according to the waveform of the resonant voltage across the D-mode GaN HEMT without the use of body diode conduction. In this study, the effect of the resonant frequency and the duty cycle on the resonance mechanism was derived to achieve the highest WPT efficiency. The result shows that the power transfer efficiency (PTE) is higher than 80% in a range of 40 cm transfer distance, and the power delivered to load (PDL) is measured for different distances. It is also possible to cover different applications related to battery charging and others using the proposed design.

Suggested Citation

  • 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.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:3:p:632-:d:487450
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    References listed on IDEAS

    as
    1. Feng Wen & Rui Li, 2019. "Parameter Analysis and Optimization of Class-E Power Amplifier Used in Wireless Power Transfer System," Energies, MDPI, vol. 12(17), pages 1-13, August.
    2. Shaoteng Zhang & Jinbin Zhao & Yuebao Wu & Ling Mao & Jiongyuan Xu & Jiajun Chen, 2020. "Analysis and Implementation of Inverter Wide-Range Soft Switching in WPT System Based on Class E Inverter," Energies, MDPI, vol. 13(19), pages 1-15, October.
    3. 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.
    4. Phuoc Sang Huynh & Deepak Ronanki & Deepa Vincent & Sheldon S. Williamson, 2020. "Overview and Comparative Assessment of Single-Phase Power Converter Topologies of Inductive Wireless Charging Systems," Energies, MDPI, vol. 13(9), pages 1-23, May.
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    Citations

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    Cited by:

    1. Yueh-Tsung Shieh & Ching-Yao Liu & Chih-Chiang Wu & Wei-Hua Chieng & Edward-Yi Chang, 2022. "Flyback Converter Using a D-Mode GaN HEMT Synchronous Rectifier," Energies, MDPI, vol. 15(9), pages 1-21, April.
    2. Desheng Zhang & Run Min & Zhigang Liu & Qiaoling Tong & Qiao Zhang & Ting Wu & Ming Zhang & Aosong Zhou, 2022. "Reducing Circling Currents in a VHF Class Φ 2 Inverter Based on a Fully Analytical Loss Model," Energies, MDPI, vol. 15(22), pages 1-17, November.
    3. Chih-Chiang Wu & Ching-Yao Liu & Guo-Bin Wang & Yueh-Tsung Shieh & Wei-Hua Chieng & Edward Yi Chang, 2021. "A New GaN-Based Device, P-Cascode GaN HEMT, and Its Synchronous Buck Converter Circuit Realization," Energies, MDPI, vol. 14(12), pages 1-23, June.
    4. Yumeng Lan & Masafumi Miyatake, 2022. "An Attended-Free, All-in-One-Go, Automatic Analysis Assistant Software for E-liked Shape Contactless Inductive Power Transfer Device," Energies, MDPI, vol. 15(17), pages 1-23, August.
    5. Ching-Yao Liu & Chih-Chiang Wu & Li-Chuan Tang & Yueh-Tsung Shieh & Wei-Hua Chieng & Edward-Yi Chang, 2023. "Resonant Mechanism for a Long-Distance Wireless Power Transfer Using Class E PA and GaN HEMT," Energies, MDPI, vol. 16(9), pages 1-21, April.
    6. Rustam Kumar & Chih-Chiang Wu & Ching-Yao Liu & Yu-Lin Hsiao & Wei-Hua Chieng & Edward-Yi Chang, 2021. "Discontinuous Current Mode Modeling and Zero Current Switching of Flyback Converter," Energies, MDPI, vol. 14(18), pages 1-23, September.
    7. Li-Chuan Tang & Shyr-Long Jeng & Edward-Yi Chang & Wei-Hua Chieng, 2021. "Variable-Frequency Pulse Width Modulation Circuits for Resonant Wireless Power Transfer," Energies, MDPI, vol. 14(12), pages 1-25, June.
    8. Fei Lu & Chong Zhu, 2022. "Advanced Wireless Power Transfer Technologies," Energies, MDPI, vol. 15(9), pages 1-2, April.
    9. 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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