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

Chengyin Liu; Yi Zhang; Hao Chen; Jiande Wu; Xiangning He

doi:10.3390/en17081851

Energies (Apr 2024)

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

Chengyin Liu,
Yi Zhang,
Hao Chen,
Jiande Wu,
Xiangning He

Affiliations

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

DOI: https://doi.org/10.3390/en17081851
Journal volume & issue: Vol. 17, no. 8
p. 1851

Abstract

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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.

Published in Energies

ISSN: 1996-1073 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Technology
Website: http://www.mdpi.com/journal/energies

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