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Omnidirectional Wireless Power Transfer System Based on Rotary Transmitting Coil for Household Appliances

Author

Listed:
  • Gongjun Liu

    (School of Electric Power Engineering, South China University of Technology, Guangzhou 510641, China)

  • Bo Zhang

    (School of Electric Power Engineering, South China University of Technology, Guangzhou 510641, China)

  • Wenxun Xiao

    (School of Electric Power Engineering, South China University of Technology, Guangzhou 510641, China)

  • Dongyuan Qiu

    (School of Electric Power Engineering, South China University of Technology, Guangzhou 510641, China)

  • Yanfeng Chen

    (School of Electric Power Engineering, South China University of Technology, Guangzhou 510641, China)

  • Jiu Guan

    (School of Electric Power Engineering, South China University of Technology, Guangzhou 510641, China)

Abstract

An omnidirectional magnetically coupled resonant wireless power transfer (WPT) system based on rotary transmitting coil is presented. The proposed scheme can ease the variations of the transfer efficiency and output power caused by the deviation of transfer direction, and improve the unbalanced power distribution phenomenon between the receivers, which are still not fully achieved in current WPT systems. The modified coupled-mode model is built first to describe the non-rotary multi-receiver WPT system. The analysis indicates that the transfer efficiency and output power of the system can be expressed as functions of the deviation angle between the transmitting coil and receiving coil, which has a non-negligible influence on the system performances. Then, the modified high order coupled-mode model containing time-varying parameters about the deviation angle is derived for the proposed omnidirectional WPT system. Theoretical analysis and simulated results indicate that this system can transfer power to multiple receivers around the transmitter synchronously and evenly, which is very suitable for wireless charging for household appliances indoors. The scheme feasibility and theoretical analysis are verified by experimental results.

Suggested Citation

  • Gongjun Liu & Bo Zhang & Wenxun Xiao & Dongyuan Qiu & Yanfeng Chen & Jiu Guan, 2018. "Omnidirectional Wireless Power Transfer System Based on Rotary Transmitting Coil for Household Appliances," Energies, MDPI, vol. 11(4), pages 1-16, April.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:4:p:878-:d:140287
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    References listed on IDEAS

    as
    1. Yong Li & Ruikun Mai & Tianren Lin & Hongjian Sun & Zhengyou He, 2017. "A Novel WPT System Based on Dual Transmitters and Dual Receivers for High Power Applications: Analysis, Design and Implementation," Energies, MDPI, vol. 10(2), pages 1-16, February.
    2. 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.
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    Cited by:

    1. Dong-Hun Woo & Hwa-Rang Cha & Rae-Young Kim, 2020. "Resonant Network Design Method to Reduce Influence of Mutual Inductance between Receivers in Multi-Output Omnidirectional Wireless Power Transfer Systems," Energies, MDPI, vol. 13(21), pages 1-15, October.
    2. Wenbin Wang & Huayun Wang & Qiong Li & Jun Xu & Tianqi Meng & Bowen Zhang & Zhen Zhang, 2019. "Analysis and Compensation of Incomplete Coupling for Omnidirectional Wireless Power Transfer," Energies, MDPI, vol. 12(17), pages 1-16, August.
    3. Xian Zhang & Xuejing Ni & Bin Wei & Songcen Wang & Qingxin Yang, 2018. "Characteristic Analysis of Electromagnetic Force in a High-Power Wireless Power Transfer System," Energies, MDPI, vol. 11(11), pages 1-13, November.
    4. Chengxin Luo & Dongyuan Qiu & Manhao Lin & Bo Zhang, 2020. "Circuit Model and Analysis of Multi-Load Wireless Power Transfer System Based on Parity-Time Symmetry," Energies, MDPI, vol. 13(12), pages 1-18, June.
    5. Safa Zouaoui & Wael Dghais & Rui Melicio & Hamdi Belgacem, 2020. "Omnidirectional WPT and Data Communication for Electric Air Vehicles: Feasibility Study," Energies, MDPI, vol. 13(24), pages 1-19, December.

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