A 13.56 MHz Wireless Power Transfer System Without Impedance Matching Networks

被引：0
|
作者：
Fu, Minfan [1 ]
Zhang, Tong [1 ]
Zhu, Xinen [1 ]
Ma, Chengbin [1 ]
机构：
[1] Shanghai Jiao Tong Univ, Univ Michigan Shanghai Jiao Tong Univ Joint Inst, Shanghai 200240, Peoples R China
来源：
2013 IEEE WIRELESS POWER TRANSFER (WPT) | 2013年
关键词：
wireless power transfer system; magnetic resonance; power reflection; impedance matching;
D O I：
暂无
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
A 13.56 MHz wireless power transfer (WPT) system is analyzed and implemented in this paper. This system consists of five subsystems: a class-D power amplifier, a pair of resonant coils, a rectifier, a DC/DC converter and various loads. By analyzing the transfer characteristics of the resonant coils, an optimum impedance is derived in order to minimize the power reflection. This impedance requirement is fulfilled by designing the rectifier and the DC/DC converter properly. The power reflection due to impedance mismatch can be controlled at 5%. When the load is a resistor, the system efficiency can reach 73%. When the loads are batteries or supercapacitors, the system efficiency can reach 66%.
引用
收藏
页码：222 / 225
页数：4
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