Efficiency Analysis for Inductive Power Transfer Using Segmented Parallel Line Feeder
Efficiency Analysis for Inductive Power Transfer Using Segmented Parallel Line Feeder
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DOI：
10.1587/transele.2022ecp5013
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发表时间：
2023
期刊：
影响因子：
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通讯作者：
William-Fabrice Brou;Quang-Thang Duong;M. Okada
中科院分区：
文献类型：
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作者：
William-Fabrice Brou;Quang-Thang Duong;M. Okada
发明内容由工作在 MHz 频段的两线传输线组成的并行线路馈线 (PLF) 已被提议作为一种广覆盖范围的短距离无线充电。在MHz频段，几米的PLF会受到驻波效应的影响，导致功率传输效率根据接收器的位置而波动。本文研究了该系统的改进版本，其中 PLF 被分为单独补偿的部分以减轻驻波效应。本文将 PLF 建模为有损传输线，从理论上表明，如果正确确定段的长度，则能够提高和稳定所有位置的效率。 27.12 MHz 的实验结果证实了理论分析，并表明可以实现 70% 的相当高的效率。
SUMMARY Parallel line feeder (PLF) consisting of a two-wire transmission line operating in the MHz band has been proposed as a wide-coverage short-distance wireless charging. In the MHz band, a PLF of several meters su ff ers from standing wave e ff ect, resulting in fluctuation in power transfer e ffi ciency accordingly to the receiver’s position. This paper studies a modified version of the system, where the PLF is divided into individually compensated segments to mitigate the standing wave e ff ect. Modelling the PLF as a lossy transmission line, this paper theoretically shows that if the segments’ lengths are properly determined, it is able to improve and stabilize the e ffi ciency for all positions. Experimental results at 27.12 MHz confirm the theoretical analysis and show that a fairly high e ffi ciency of 70% can be achieved.