Efficiency optimization of WPT system with a planar receiver for mobile applications

Van Thuan Nguyen; Seok Hyon Kang; Changwon  Jung

doi:10.1002/mop.29921

Efficiency optimization of WPT system with a planar receiver for mobile applications

Van Thuan Nguyen, Seok Hyon Kang, Changwon Jung

Dept. of Semiconductor Engineering

Seoul National University of Science and Technology (SNUST)

Research output: Contribution to journal › Article › peer-review

12 Scopus citations

Abstract

This letter presents a wireless power transfer (WPT) system with a planar receiver for mobile applications. The proposed WPT system includes a source coil, a transmitter spiral (Tx coil), a rectangular receiver coil (Rx coil), and a rectangular load coil. In order to make a compact receiver, the Rx coil is placed in front of the load coil with a gap of 2 mm. In addition, the relation between the transfer efficiency of WPT system and the capacitance value of Rx coil is established. Experimental results show that by optimizing the capacitor embedded in Rx coil, it is capable of achieving a very high transfer efficiency. With an optimized capacitor C_x = 785 pF on the Rx coil, the transfer efficiency of the proposed system is comparable to a WPT system using a metamaterial (MTM) array. The proposed WPT system operates at 6.78 MHz.

Original language	English
Pages (from-to)	1817-1819
Number of pages	3
Journal	Microwave and Optical Technology Letters
Volume	58
Issue number	8
DOIs	https://doi.org/10.1002/mop.29921
State	Published - 1 Aug 2016

Keywords

coils
loops
mobile applications
transfer efficiency
wireless power transfer

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10.1002/mop.29921

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title = "Efficiency optimization of WPT system with a planar receiver for mobile applications",

abstract = "This letter presents a wireless power transfer (WPT) system with a planar receiver for mobile applications. The proposed WPT system includes a source coil, a transmitter spiral (Tx coil), a rectangular receiver coil (Rx coil), and a rectangular load coil. In order to make a compact receiver, the Rx coil is placed in front of the load coil with a gap of 2 mm. In addition, the relation between the transfer efficiency of WPT system and the capacitance value of Rx coil is established. Experimental results show that by optimizing the capacitor embedded in Rx coil, it is capable of achieving a very high transfer efficiency. With an optimized capacitor Cx = 785 pF on the Rx coil, the transfer efficiency of the proposed system is comparable to a WPT system using a metamaterial (MTM) array. The proposed WPT system operates at 6.78 MHz.",

keywords = "coils, loops, mobile applications, transfer efficiency, wireless power transfer",

author = "\{Thuan Nguyen\}, Van and \{Hyon Kang\}, Seok and Changwon Jung",

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AU - Thuan Nguyen, Van

AU - Hyon Kang, Seok

AU - Jung, Changwon

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N2 - This letter presents a wireless power transfer (WPT) system with a planar receiver for mobile applications. The proposed WPT system includes a source coil, a transmitter spiral (Tx coil), a rectangular receiver coil (Rx coil), and a rectangular load coil. In order to make a compact receiver, the Rx coil is placed in front of the load coil with a gap of 2 mm. In addition, the relation between the transfer efficiency of WPT system and the capacitance value of Rx coil is established. Experimental results show that by optimizing the capacitor embedded in Rx coil, it is capable of achieving a very high transfer efficiency. With an optimized capacitor Cx = 785 pF on the Rx coil, the transfer efficiency of the proposed system is comparable to a WPT system using a metamaterial (MTM) array. The proposed WPT system operates at 6.78 MHz.

AB - This letter presents a wireless power transfer (WPT) system with a planar receiver for mobile applications. The proposed WPT system includes a source coil, a transmitter spiral (Tx coil), a rectangular receiver coil (Rx coil), and a rectangular load coil. In order to make a compact receiver, the Rx coil is placed in front of the load coil with a gap of 2 mm. In addition, the relation between the transfer efficiency of WPT system and the capacitance value of Rx coil is established. Experimental results show that by optimizing the capacitor embedded in Rx coil, it is capable of achieving a very high transfer efficiency. With an optimized capacitor Cx = 785 pF on the Rx coil, the transfer efficiency of the proposed system is comparable to a WPT system using a metamaterial (MTM) array. The proposed WPT system operates at 6.78 MHz.

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KW - transfer efficiency

KW - wireless power transfer

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Efficiency optimization of WPT system with a planar receiver for mobile applications

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Keywords

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