Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/11467
Title: Quantitative design and analysis of relay resonators in wireless power transfer system
Authors: Zhang, X
Ho, SL 
Fu, WN 
Keywords: Equivalent circuit
Optimal position
Relay resonator
Wireless power transfer
Issue Date: 2012
Publisher: Institute of Electrical and Electronics Engineers
Source: IEEE transactions on magnetics, 2012, v. 48, no. 11, 6333041, p. 4026-4029 How to cite?
Journal: IEEE transactions on magnetics 
Abstract: Wireless power transfer systems are finding increasing applications which can enhance the living standard of the general public. Typical examples are wireless charging of mobile phone batteries and car batteries. Thanks to the advent of power electronics in the past few decades, some wireless charging systems are now emerging in the commercial sector. However, the transfer efficiency and transfer distance of these chargers are limiting the technology to a few specific applications only. In order to increase the transfer distance, some researchers have successfully proposed to use relay coils to improve their wireless power transfer efficiency. In this paper, the role of relay resonator is examined critically. The reported findings indicate that it is not always desirable to have relay coils in wireless charger as the relay resonator may increase, or sometimes reduce, the overall power transfer efficiency. The findings also reveal that there is an optimal position for the designer to locate the relay resonator to maximize the power transfer efficiency.
URI: http://hdl.handle.net/10397/11467
ISSN: 0018-9464
EISSN: 1941-0069
DOI: 10.1109/TMAG.2012.2202883
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