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http://dx.doi.org/10.5515/KJKIEES.2010.21.6.564

Study on Arrangement of Self-Resonant Coils in Wireless Power Transfer System Based on Magnetic Resonance  

Kim, Jin-Wook (Power Electrical Equipment Information and Comm., UST)
Ji, Hyeon-Ho (Electronic and Information System Eng., Hanyang University)
Choi, Yeon-Gyu (Comm. and Electronic Eng., Hanyang University)
Yun, Young-Hyun (Comm. and Electronic Eng., Hanyang University)
Kim, Kwan-Ho (KERI)
Park, Young-Jin (Power Electrical Equipment Information and Comm., UST)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.21, no.6, 2010 , pp. 564-572 More about this Journal
Abstract
In this paper, characteristics on arrangement of coils in the wireless power transfer system based on magnetic resonance is presented. A helical structure is used for a self-resonant coil. To design a proper self-resonant helical coil, its inductance and capacitance are obtained. Using the finite element method, the self-resonant coil designed is simulated and characteristics of wireless power transfer with various arrangement between Tx and Rx resonant coils is analyzed. For verification, a prototype of a wireless power transfer system based on magnetic resonance is fabricated and efficiency of different arrangement such as both vertical and parallel arrangements is measured. From the measurement, transmission efficiency of 50 % for parallel arrangement is obtained within twice the diameter of the coil while for the vertical arrangement it is measured within one and a half diameter of the coil. Maximum efficiency of 84.25 % is observed at the distance 40 cm from the resonant coil in the case of parallel arrangement.
Keywords
Magnetic Resonance; Wireless Power Transmission(WPT); Helical Coil;
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  • Reference
1 H. A. Wheeler, "Discussion", Proc. IRE, vol. 17, pp. 580-582, 1929.   DOI
2 Peter Vizmuller, RF Design Guide: Systems, Circuits and Equations, Artech House, 1995.
3 R. H. Good, "Elliptic integrals, the forgotten functions", European Journal of Physics, vol. 22, 2001.
4 Andre Kurs, Aristeidis Karalis, Robert Moffatt, J. D. Joannopoulos, Peter Fisher, and Marin Soljacic, "Wireless power transfer via strongly coupled magnetic resonances", Science, vol. 317, Jul. 2007.
5 대한전기학회 기획시리즈, "무선 전력 전송 기술의 동향 및 현황", 대한전기학회지, 59(1), 2010년 1월.
6 Nikola Tesla, "Apparatus for transmitting electrical energy", US patent 1119732, 1914.
7 Hidetoshi Matsuki, Frontier of Wireless Electric Power Transmission, 세이모시 출판, 2009.
8 Aristeidis Karalis, J. D. Joannopoulos, and Marin Soljacic, "Efficient wireless non-radiative mid-range energy transfer", Annals of Physics, vol. 323, 34, 2008.   DOI
9 Youndo Tak, Jongmin Park, and Sangwook Nam, "Mode-based analysis of resonant characteristics for near-field coupled small antennas", IEEE Antennas and Wireless Propagation Letters, vol. 8, 2009.   DOI   ScienceOn
10 Ansoft, HFSS v.11.2.
11 Hermann A. Haus, Weiping Huang, "Coupled-mode theory", Proceedings of the IEEE, vol. 79, no. 10, Oct. 1991.   DOI
12 H. A. Wheeler, "Simple inductance formulas for radio coils", Proc. IRE, vol. 16, pp. 1398-1400, 1929.