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An Efficient Topology for Wireless Power Transfer over a Wide Range of Loading Conditions

Author

Listed:
  • Tianqing Li

    (School of Automation, Beijing Institute of Technology, Beijing 100081, China)

  • Xiangzhou Wang

    (School of Automation, Beijing Institute of Technology, Beijing 100081, China)

  • Shuhua Zheng

    (School of Automation, Beijing Institute of Technology, Beijing 100081, China)

  • Chunhua Liu

    (School of Energy and Environment, City University of Hong Kong, Hong Kong, China)

Abstract

Although an inductive power transfer (IPT) system can transfer power efficiently in full-load conditions, its efficiency obviously decreases in light-load conditions. To solve this problem, based on a two-coil IPT system with a series-series compensation topology, a single-ended primary-inductor converter is introduced at the secondary side. By adjusting the set effective value of the current in the primary coil, the converter input voltage changes to maintain the equivalent input resistance of the converter in an optimal condition. The system can then transfer the power efficiently with the wide load conditions. Moreover, the system operates at a constant resonance frequency with a high power factor. Both the simulation and experimentation of a prototype with a 10 W IPT system demonstrate the effectiveness of the proposed topology for wireless power transfer.

Suggested Citation

  • Tianqing Li & Xiangzhou Wang & Shuhua Zheng & Chunhua Liu, 2018. "An Efficient Topology for Wireless Power Transfer over a Wide Range of Loading Conditions," Energies, MDPI, vol. 11(1), pages 1-16, January.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:1:p:141-:d:125725
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    References listed on IDEAS

    as
    1. Xin Dai & Xiaofei Li & Yanling Li & Pengqi Deng & Chunsen Tang, 2017. "A Maximum Power Transfer Tracking Method for WPT Systems with Coupling Coefficient Identification Considering Two-Value Problem," Energies, MDPI, vol. 10(10), pages 1-13, October.
    2. Chaoqiang Jiang & K. T. Chau & Chunhua Liu & Christopher H. T. Lee, 2017. "An Overview of Resonant Circuits for Wireless Power Transfer," Energies, MDPI, vol. 10(7), pages 1-20, June.
    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. Yuyu Geng & Bin Li & Zhongping Yang & Fei Lin & Hu Sun, 2017. "A High Efficiency Charging Strategy for a Supercapacitor Using a Wireless Power Transfer System Based on Inductor/Capacitor/Capacitor (LCC) Compensation Topology," Energies, MDPI, vol. 10(1), pages 1-17, January.
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    Cited by:

    1. Marojahan Tampubolon & Laskar Pamungkas & Huang-Jen Chiu & Yu-Chen Liu & Yao-Ching Hsieh, 2018. "Dynamic Wireless Power Transfer for Logistic Robots," Energies, MDPI, vol. 11(3), pages 1-13, February.
    2. Junfeng Yang & Xiaodong Zhang & Xu Yang & Qiujiang Liu & Yi Sun, 2019. "A Hybrid Compensation Topology for Battery Charging System Based on IPT Technology," Energies, MDPI, vol. 12(20), pages 1-18, October.

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