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Analysis of the Parity-Time Symmetry Model in the Receiver-Based Wireless Power Transfer

Author

Listed:
  • Xiaoxi Yan

    (School of Electrical Information Engineering, Jiangsu University, Zhenjiang 212013, China)

  • Wen Yan

    (School of Electrical Information Engineering, Jiangsu University, Zhenjiang 212013, China)

Abstract

Parity-time (PT) symmetry has made encouraging progress in wireless power transmission (WPT), exhibiting significant advantages in terms of system robustness and transmission efficiency. However, there are still challenges that need to be addressed, particularly when classical schemes operate at a fixed frequency in the weak coupling region, where even minor changes in coupling strength can result in excessive current surges. This paper introduced a novel PT-symmetric WPT system featuring negative resistance constructed on the receiver side. We first established a theoretical framework for the classical two-coil PT-symmetric magnetically coupled resonant WPT system and subsequently extended it to incorporate the PT-symmetric WPT system with negative resistance on the receiver. This topological coil configuration facilitated stable power delivery over a broader range, with the capability of self-tuning frequency without requiring additional frequency modulation. This adaptability enabled the system to cater to diverse scenarios and opens up a novel avenue for practical applications of PT symmetry in WPT. Finally, we designed a 10 W prototype to demonstrate the effectiveness of our topology, and the experimental results aligned with our theoretical calculations, validating the feasibility and potential of our PT-symmetric WPT system.

Suggested Citation

  • Xiaoxi Yan & Wen Yan, 2024. "Analysis of the Parity-Time Symmetry Model in the Receiver-Based Wireless Power Transfer," Energies, MDPI, vol. 17(23), pages 1-10, December.
    • Handle: RePEc:gam:jeners:v:17:y:2024:i:23:p:6103-:d:1536318
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    References listed on IDEAS

    as
    1. Haiyan Zhang & Kejia Zhu & Zhiwei Guo & Yuguang Chen & Yong Sun & Jun Jiang & Yunhui Li & Zhuoping Yu & Hong Chen, 2023. "Robustness of Wireless Power Transfer Systems with Parity-Time Symmetry and Asymmetry," Energies, MDPI, vol. 16(12), pages 1-14, June.
    2. Sid Assawaworrarit & Xiaofang Yu & Shanhui Fan, 2017. "Robust wireless power transfer using a nonlinear parity–time-symmetric circuit," Nature, Nature, vol. 546(7658), pages 387-390, June.
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