NDLI: A 13.56 MHz wireless power transfer system without impedance matching networks

Content Provider	IEEE Xplore Digital Library
Author	Minfan Fu Tong Zhang Xinen Zhu Chengbin Ma
Copyright Year	2013
Description	Author affiliation: Univ. of Michigan-SJTU Joint Inst., Shanghai Jiao Tong Univ., Shanghai, China (Minfan Fu; Tong Zhang; Xinen Zhu; Chengbin Ma)
Abstract	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%.
Sponsorship	IEEE Microwv. Theory Tech. Soc.
Starting Page	222
Ending Page	225
File Size	917385
Page Count	4
File Format	PDF
ISBN	9781467350082
e-ISBN	9781467350105
DOI	10.1109/WPT.2013.6556923
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-05-15
Publisher Place	Italy
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Couplings Wireless communication Coils Resistance Power reflection Impedance matching Magnetic resonance DC-DC power converters Wireless power transfer system Impedance
Content Type	Text
Resource Type	Article

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