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

Chengyin Liu, Yi Zhang, Hao Chen, Jiande Wu () and Xiangning He
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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

Energies, 2024, vol. 17, issue 8, 1-19

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.

Keywords: orthogonal frequency (OF); simultaneous wireless power and data transmission (SWPDT); full-duplex communication; wireless electric vehicle charging (WEVC) (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2024
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