Wireless Power Transfer via Strongly Coupled Magnetic Resonances

Science ◽  
2007 ◽  
Vol 317 (5834) ◽  
pp. 83-86 ◽  
Author(s):  
A. Kurs ◽  
A. Karalis ◽  
R. Moffatt ◽  
J. D. Joannopoulos ◽  
P. Fisher ◽  
...  
Keyword(s):  
Wireless Power Transfer ◽  
Power Transfer ◽  
Wireless Power ◽  
Strongly Coupled ◽  
Magnetic Resonances

Relay Effect of Wireless Power Transfer Using Strongly Coupled Magnetic Resonances

2011 ◽  
Vol 47 (5) ◽  
pp. 1478-1481 ◽  
Author(s):  
Fei Zhang ◽  
Steven A. Hackworth ◽  
Weinong Fu ◽  
Chengliu Li ◽  
Zhihong Mao ◽  
...  
Keyword(s):  
Wireless Power Transfer ◽  
Power Transfer ◽  
Wireless Power ◽  
Strongly Coupled ◽  
Magnetic Resonances

Wireless Power Transfer Systems via Strong Coupled Magnetic Resonances — Design, PCB Implementation and Tests

2011 ◽  
Vol 383-390 ◽  
pp. 5984-5989
Author(s):  
Yan Ping Yao ◽  
Hong Yan Zhang ◽  
Zheng Geng
Keyword(s):  
Printed Circuit Board ◽  
Experimental System ◽  
Wireless Power Transfer ◽  
Circuit Board ◽  
Transfer Efficiency ◽  
Power Transfer ◽  
Wireless Power ◽  
Power Transfer Efficiency ◽  
Coil Winding ◽  
Magnetic Resonances

In this paper, we present theoretical analysis and detailed design of a class of wireless power transfer (WPT) systems based on strong coupled magnetic resonances. We established the strong coupled resonance conditions for practically implementable WPT systems. We investigated the effects of non-ideal conditions presented in most practical systems on power transfer efficiency and proposed solutions to deal with these problems. We carried out a design of WPT system by using PCB (Printed Circuit Board) antenna pair, which showed strong coupled magnetic resonances. The innovations of our design include: (1) a new coil winding pattern for resonant coils that achieves a compact space volume, (2) fabrication of resonant coils on PCBs, and (3) integration of the entire system on a pair of PCBs. Extensive experiments were performed and experimental results showed that our WPT system setup achieved a guaranteed power transfer efficiency 14% over a distance of two times characteristic length(44cm). The wireless power transfer efficiency in this PCB based experimental system was sufficiently high to lighten up a LED with a signal generator.

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