文章基本信息

标题：A Loosely Coupled Planar Wireless Power Transfer System Supporting Multiple Receivers
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作者：Zhen Ning Low ; Joaquin Jesus Casanova ; Jenshan Lin 等
期刊名称：Advances in Power Electronics
印刷版ISSN：2090-181X
电子版ISSN：2090-1828
出版年度：2010
卷号：2010
DOI：10.1155/2010/546529
出版社：Hindawi Publishing Corporation
摘要：A high-efficiency wireless power transfer system which is capable of supporting more than one receiver using class E operation for transmitter via inductive coupling has been designed and fabricated. The design approach of the system is also presented in this paper. The system requires no complex external control system but relies on its natural impedance response to achieve the desired power delivery profile across a wide range of load resistances while maintaining high efficiency to prevent any heating issues. A switch circuit is used to decouple the fully charged receiver from the system so that power delivery to the other receiver can be improved. The fabricated system at 12 V supply voltage is compact and capable of approximately 2.5 W of power delivery to each of the two receivers in a dual receiver setup and 5 W to a single receiver alone or when the other receiver is decoupled by the receiver switch. During high-power delivery state, the system efficiency is between 67.5% and 77.5%.