Optimal design of a wireless power transfer system with multiple self-resonators for an LED TV

Author

Kim, JinWook ; Son, Hyeon-Chang ; Kim, Do-Hyeon ; Park, Young-Jin

Author_Institution

Korea Electrotechnol. Res. Inst. (KERI), Univ. of Sci. & Technol. (UST), Ansan, South Korea

Volume

58

Issue

3

fYear

2012

fDate

8/1/2012 12:00:00 AM

Firstpage

775

Lastpage

780

Abstract

This paper proposes an optimal design method in an asymmetric wireless power transfer (WPT) system for a 150 watt LED TV. The WPT system has three self-resonators: a Tx resonator, an Rx resonator, and an intermediate resonator. The Tx and Rx resonators are perpendicular and offset, respectively, to the intermediate resonator in the geometry. For optimal design, the WPT system is analyzed using an equivalent circuit. In particular, a calculation method for mutual inductance in the system is expressed. The calculation results of mutual inductance are used to determine the optimal position of each self-resonator for maximizing the power transfer efficiency. For verification, a WPT system for a 150 watt, 47 inch LED TV is fabricated at 250 kHz. The WPT system exhibits wireless power transfer efficiency of 80%.

Keywords

equivalent circuits; light emitting diodes; radio receivers; radio transmitters; radiofrequency power transmission; resonators; television; LED TV; Rx resonator; Tx resonator; WPT system; asymmetric wireless power transfer system; equivalent circuit; frequency 250 kHz; intermediate geometry resonator; intermediate resonator; multiple self-resonators; mutual inductance; optimal design method; optimal position; power 150 W; size 47 inch; wireless power transfer efficiency; Capacitors; Coils; Impedance; Inductance; Light emitting diodes; TV; Wireless communication; Mutual inductance; optimal design; rectangularself-resonator; wireless LED TV; wireless power transfer;

fLanguage

English

Journal_Title

Consumer Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0098-3063

Type

jour

DOI

10.1109/TCE.2012.6311317

Filename

6311317