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Free Angular-Positioning Wireless Power Transfer Using a Spherical Joint

Author

Listed:
  • Mohamad Abou Houran

    (School of Electrical Engineering, Xi’an Jiaotong University, Xi’an 710049, China)

  • Xu Yang

    (School of Electrical Engineering, Xi’an Jiaotong University, Xi’an 710049, China)

  • Wenjie Chen

    (School of Electrical Engineering, Xi’an Jiaotong University, Xi’an 710049, China)

Abstract

Many studies have investigated resonator structures and winding methods. The aims of this paper are as follows. First, the paper proposes an optimized winding model for a bio-inspired joint for a wireless power transfer (WPT) system. The joint consists of a small spherical structure, which rotates inside a hemispherical structure. The transmitter coil ( Tx ) is wound on the hemisphere structure, and the receiver coil ( Rx ) is wound on the small sphere. The power is transferred while rotating Rx over a wide range of angular misalignment. In addition, the algorithm design of the proposed winding method is given to get an optimized model. Moreover, the circuit analysis of the WPT system is discussed. Second, the magnetic field density is investigated considering a safety issue, which is linked to human exposure to electromagnetic fields (EMFs). Moreover, EMF mitigation methods are proposed and discussed in detail. Finally, the simulation results are validated by experiments, which have confirmed that the proposed winding method allows the system to rotate up to 85 degrees and achieve an efficiency above 86%. The proposed winding method for the WPT system can be a good technique for some robotic applications or a future replacement of the human joint.

Suggested Citation

  • Mohamad Abou Houran & Xu Yang & Wenjie Chen, 2018. "Free Angular-Positioning Wireless Power Transfer Using a Spherical Joint," Energies, MDPI, vol. 11(12), pages 1-26, December.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:12:p:3488-:d:190495
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    References listed on IDEAS

    as
    1. Seyit Ahmet Sis & Emre Orta, 2018. "A Cross-Shape Coil Structure for Use in Wireless Power Applications," Energies, MDPI, vol. 11(5), pages 1-14, April.
    2. Yang Yang & Mohamed El Baghdadi & Yuanfeng Lan & Yassine Benomar & Joeri Van Mierlo & Omar Hegazy, 2018. "Design Methodology, Modeling, and Comparative Study of Wireless Power Transfer Systems for Electric Vehicles," Energies, MDPI, vol. 11(7), pages 1-22, July.
    3. Zhaohong Ye & Yue Sun & Xiufang Liu & Peiyue Wang & Chunsen Tang & Hailin Tian, 2018. "Power Transfer Efficiency Analysis for Omnidirectional Wireless Power Transfer System Using Three-Phase-Shifted Drive," Energies, MDPI, vol. 11(8), pages 1-19, August.
    4. Cheng Jiang & Yue Sun & Zhihui Wang & Chunsen Tang, 2018. "Multi-Load Mode Analysis for Electric Vehicle Wireless Supply System," Energies, MDPI, vol. 11(8), pages 1-11, July.
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    Cited by:

    1. Bohdan Pakhaliuk & Viktor Shevchenko & Jan Mućko & Oleksandr Husev & Mykola Lukianov & Piotr Kołodziejek & Natalia Strzelecka & Ryszard Strzelecki, 2021. "Optimal Rotating Receiver Angles Estimation for Multicoil Dynamic Wireless Power Transfer," Energies, MDPI, vol. 14(19), pages 1-15, September.
    2. Jacek Maciej Stankiewicz, 2023. "Analysis of the Influence of the Skin Effect on the Efficiency and Power of the Receiver in the Periodic WPT System," Energies, MDPI, vol. 16(4), pages 1-22, February.
    3. Jacek Maciej Stankiewicz & Adam Steckiewicz & Agnieszka Choroszucho, 2023. "Analysis of Simultaneous WPT in Ultra-Low-Power Systems with Multiple Resonating Planar Coils," Energies, MDPI, vol. 16(12), pages 1-17, June.

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