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Frequency-Splitting-Free Synchronous Tuning of Close-Coupling Self-Oscillating Wireless Power Transfer

Author

Listed:
  • Po Hu

    () (School of Electrical Engineering, Wuhan University, 299 Bayi Road, Wuchang, Wuhan 430072, China)

  • Jieshuai Ren

    () (School of Electrical Engineering, Wuhan University, 299 Bayi Road, Wuchang, Wuhan 430072, China)

  • Wenan Li

    () (School of Electrical Engineering, Wuhan University, 299 Bayi Road, Wuchang, Wuhan 430072, China)

Abstract

The synchronous tuning of the self-oscillating wireless power transfer (WPT) in a close-coupling condition is studied in this paper. The Hamel locus is applied to predict the self-oscillating points in the WPT system. In order to make the system operate stably at the most efficient point, which is the middle resonant point when there are middle resonant and split frequency points caused by frequency-splitting, the receiver (RX) rather than the transmitter (TX) current is chosen as the self-oscillating feedback variable. The automatic delay compensation is put forward to eliminate the influence of the intrinsic delay on frequency tuning for changeable parameters. In addition, the automatic circuit parameter tuning based on the phase difference is proposed to realize the synchronous tuning of frequency and circuit parameters. The experiments verified that the synchronous tuning proposed in this paper is effective, fully automatic, and more robust than the previous self-oscillating WPT system which use the TX current as the feedback variable.

Suggested Citation

  • Po Hu & Jieshuai Ren & Wenan Li, 2016. "Frequency-Splitting-Free Synchronous Tuning of Close-Coupling Self-Oscillating Wireless Power Transfer," Energies, MDPI, Open Access Journal, vol. 9(7), pages 1-16, June.
  • Handle: RePEc:gam:jeners:v:9:y:2016:i:7:p:491-:d:72836
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    References listed on IDEAS

    as
    1. Thuc Phi Duong & Jong-Wook Lee, 2015. "A Dynamically Adaptable Impedance-Matching System for Midrange Wireless Power Transfer with Misalignment," Energies, MDPI, Open Access Journal, vol. 8(8), pages 1-25, July.
    2. Charles Moorey & William Holderbaum & Ben Potter, 2015. "Investigation of High-Efficiency Wireless Power Transfer Criteria of Resonantly-Coupled Loops and Dipoles through Analysis of the Figure of Merit," Energies, MDPI, Open Access Journal, vol. 8(10), pages 1-21, October.
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    Cited by:

    1. repec:gam:jeners:v:10:y:2017:i:10:p:1588-:d:114738 is not listed on IDEAS
    2. repec:gam:jeners:v:10:y:2017:i:4:p:498-:d:95174 is not listed on IDEAS
    3. Chaoqiang Jiang & K.T. Chau & Chunhua Liu & Wei Han, 2017. "Wireless DC Motor Drives with Selectability and Controllability," Energies, MDPI, Open Access Journal, vol. 10(1), pages 1-15, January.
    4. 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, Open Access Journal, vol. 10(3), pages 1-20, March.

    More about this item

    Keywords

    wireless power transfer (WPT); close coupling; self-oscillation; Hamel locus; frequency-splitting; synchronous tuning;

    JEL classification:

    • Q - Agricultural and Natural Resource Economics; Environmental and Ecological Economics
    • Q0 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - General
    • Q4 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Energy
    • Q40 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Energy - - - General
    • Q41 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Energy - - - Demand and Supply; Prices
    • Q42 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Energy - - - Alternative Energy Sources
    • Q43 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Energy - - - Energy and the Macroeconomy
    • Q47 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Energy - - - Energy Forecasting
    • Q48 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Energy - - - Government Policy
    • Q49 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Energy - - - Other

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