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http://dx.doi.org/10.6113/JPE.2016.16.2.805

A Shared Channel Design for the Power and Signal Transfers of Electric-field Coupled Power Transfer Systems  

Su, Yu-Gang (State Key Laboratory of Power Transmission Equipment and System Security and New Technology, Chongqing University)
Zhou, Wei (College of Automation, Chongqing University)
Hu, Aiguo Patrick (Department of Electrical and Computer Engineering, University of Auckland)
Tang, Chun-Sen (College of Automation, Chongqing University)
Hua, Rong (Department of Electrical and Computer Engineering, University of Auckland)
Publication Information
Journal of Power Electronics / v.16, no.2, 2016 , pp. 805-814 More about this Journal
Abstract
Electric-field coupled power transfer (ECPT) systems have been proposed as an alternative wireless power transfer (WPT) technology in recent years. With the use of capacitive plates as a coupling structure, ECPT systems have many advantages such as design flexibility, reduced volume of the coupling structure and metal penetration ability. In addition, wireless communications are effective solutions to improve the safety and controllability of ECPT systems. This paper proposes a power and signal shared channel for electric-field coupled power transfer systems. The shared channel includes two similar electrical circuits with a band pass filter and a signal detection resistor in each. This is designed based on the traditional current-fed push-pull topology. An analysis of the mutual interference between the power and signal transmission, the channel power and signal attenuations, and the dynamic characteristic of the signal channel are conducted to determine the values for the electrical components of the proposed shared channel. Experimental results show that the designed channel can transfer over 100W of output power and data with a data rate from 300bps to 120 kbps.
Keywords
ECPT; Electric-field coupled; Half-duplex communication; Shared channel; Wireless power transfer;
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Times Cited By KSCI : 3  (Citation Analysis)
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