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

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4 Author(s)
Jinwook Kim ; Korea Electrotechnol. Res. Inst. (KERI), Univ. of Sci. & Technol. (UST), Ansan, South Korea ; Hyeon-Chang Son ; Do-Hyeon Kim ; Young-Jin Park

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%.

Published in:

Consumer Electronics, IEEE Transactions on  (Volume:58 ,  Issue: 3 )

Date of Publication:

August 2012

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