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Orthogonal-Frequency Simultaneous Wireless Power and Data Transfer for High-Power Wireless EV Charging

Author

Listed:
  • Chengyin Liu

    (College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China)

  • Yi Zhang

    (College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China)

  • Hao Chen

    (College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China)

  • Jiande Wu

    (College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China)

  • Xiangning He

    (College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China)

Abstract

In a simultaneous wireless power and data transfer (SWPDT) system using common coils, achieving high-speed communication in high-power wireless charging systems is challenging due to power transfer interference on communication. Based on high-frequency data carrier-based SWPDT (HFDC-SWPDT) technology, this paper proposes an orthogonal-frequency simultaneous wireless power and data transfer (OF-SWPDT) method to minimize interference where the data carrier frequency is orthogonal to the power carrier frequency and its harmonics. In addition, a guard band is inserted between the spectra of power harmonics and data in order to further separate the power and data spectra. Thus, a high-power, high-speed SWPDT system is achieved. Finally, an 11 kW prototype with 64.125 kbps full-duplex communication is developed to validate the proposed method.

Suggested Citation

  • Chengyin Liu & Yi Zhang & Hao Chen & Jiande Wu & Xiangning He, 2024. "Orthogonal-Frequency Simultaneous Wireless Power and Data Transfer for High-Power Wireless EV Charging," Energies, MDPI, vol. 17(8), pages 1-19, April.
    • Handle: RePEc:gam:jeners:v:17:y:2024:i:8:p:1851-:d:1374765
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