Full-Duplex High-Speed Simultaneous Communication Technology for Wireless EV Charging

被引:49
|
作者
Qian, Zhongnan [1 ]
Yan, Rui [1 ]
Wu, Jiande [1 ]
He, Xiangning [1 ]
机构
[1] Zhejiang Univ, Coll Elect Engn, Hangzhou 310027, Zhejiang, Peoples R China
关键词
Frequency division multiplexing; full-duplex communication; quadrature phase-shift keying (QPSK); simultaneous wireless power and data transmission (SWPDT); wireless electric vehicle charging (WEVC);
D O I
10.1109/TPEL.2019.2909303
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
This letter presents a novel simultaneous wireless power and data transmission (SWPDT) system for wireless electric vehicle (EV) charging. The data carrier is injected and extracted by a plug-and-play toroidal-core inductor. Two data carriers of 5 and 6.25 MHz are adopted to achieve bidirectional and full-duplex communication using frequency-division multiplexing. Differential quadrature phase-shift keying modulation is achieved by a Class-E amplifier in the data transmitter. An analog switch circuit is designed to demodulate the data carrier in the data receiver. The proposed method is verified by a prototype that achieves up to 64 kbps full-duplex data transmission under 3.3 kW power transfer. The bit rate and interference immunity of data transmission are greatly improved compared to the reported SWPDT systems, which makes it possible to realize high-speed simultaneous communication in the kilowatt-level wireless EV charging.
引用
收藏
页码:9369 / 9373
页数:5
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