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A Uniform Voltage Gain Control for Alignment Robustness in Wireless EV Charging

Author

Listed:
  • Yabiao Gao

    (College of Engineering, University of Georgia, Athens, GA 30602, USA)

  • Kathleen Blair Farley

    (Southern Company Services, Inc., Birmingham, AL 35291, USA)

  • Zion Tsz Ho Tse

    (College of Engineering, University of Georgia, Athens, GA 30602, USA)

Abstract

The efficiency of wireless power transfer is sensitive to the horizontal and vertical distances between the transmitter and receiver coils due to the magnetic coupling change. To address the output voltage variation and efficiency drop caused by misalignment, a uniform voltage gain frequency control is implemented to improve the power delivery and efficiency of wireless power transfer under misalignment. The frequency is tuned according to the amplitude and phase-frequency characteristics of coupling variations in order to maintain a uniform output voltage in the receiver coil. Experimental comparison of three control methods, including fixed frequency control, resonant frequency control, and the proposed uniform gain control was conducted and demonstrated that the uniform voltage gain control is the most robust method for managing misalignment in wireless charging applications.

Suggested Citation

  • Yabiao Gao & Kathleen Blair Farley & Zion Tsz Ho Tse, 2015. "A Uniform Voltage Gain Control for Alignment Robustness in Wireless EV Charging," Energies, MDPI, vol. 8(8), pages 1-16, August.
    • Handle: RePEc:gam:jeners:v:8:y:2015:i:8:p:8355-8370:d:53904
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    Citations

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    Cited by:

    1. Po Hu & Jieshuai Ren & Wenan Li, 2016. "Frequency-Splitting-Free Synchronous Tuning of Close-Coupling Self-Oscillating Wireless Power Transfer," Energies, MDPI, vol. 9(7), pages 1-16, June.
    2. Ravikiran Vaka & Ritesh Kumar Keshri, 2017. "Review on Contactless Power Transfer for Electric Vehicle Charging," Energies, MDPI, vol. 10(5), pages 1-20, May.
    3. Xu Liu & Lindsay Clare & Xibo Yuan & Chonglin Wang & Jianhua Liu, 2017. "A Design Method for Making an LCC Compensation Two-Coil Wireless Power Transfer System More Energy Efficient Than an SS Counterpart," Energies, MDPI, vol. 10(9), pages 1-29, September.
    4. Qichang Duan & Yanling Li & Xin Dai & Tao Zou, 2017. "A Novel High Controllable Voltage Gain Push-Pull Topology for Wireless Power Transfer System," Energies, MDPI, vol. 10(4), pages 1-13, April.
    5. Zhenshi Wang & Xuezhe Wei & Haifeng Dai, 2015. "Design and Control of a 3 kW Wireless Power Transfer System for Electric Vehicles," Energies, MDPI, vol. 9(1), pages 1-18, December.
    6. Kafeel Ahmed Kalwar & Saad Mekhilef & Mehdi Seyedmahmoudian & Ben Horan, 2016. "Coil Design for High Misalignment Tolerant Inductive Power Transfer System for EV Charging," Energies, MDPI, vol. 9(11), pages 1-13, November.
    7. Jin Zhang & Chonghu Cheng, 2016. "Analysis and Optimization of Three-Resonator Wireless Power Transfer System for Predetermined-Goals Wireless Power Transmission," Energies, MDPI, vol. 9(4), pages 1-20, April.
    8. Zhongyu Dai & Junhua Wang & Mengjiao Long & Hong Huang, 2017. "A Witricity-Based High-Power Device for Wireless Charging of Electric Vehicles," Energies, MDPI, vol. 10(3), pages 1-14, March.
    9. 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.
    10. Linlin Tan & Jinpeng Guo & Xueliang Huang & Han Liu & Changxin Yan & Wei Wang, 2016. "Power Control Strategies of On-Road Charging for Electric Vehicles," Energies, MDPI, vol. 9(7), pages 1-14, July.

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