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http://dx.doi.org/10.5370/KIEE.2015.64.2.353

Efficiency Enhancement of a Wireless Power Transmission System Applying a Superconducting Coil  

Kang, Min-Sang (Dept. of Electrical Engineering, Chosun University)
Choi, Hyo-Sang (Dept. of Electrical Engineering, Chosun University)
Jeong, In-Sung (Dept. of Electrical Engineering, Chosun University)
Publication Information
The Transactions of The Korean Institute of Electrical Engineers / v.64, no.2, 2015 , pp. 353-356 More about this Journal
Abstract
Due to high oil prices, environmental pollution, the study of electric vehicles have been actively promoted. Charger for the electric vehicle is being developed using wireless rather than cable options. In this paper, we got more efficiency from using a superconducting transmission coil compared to using a normal coil. We implemented a wireless power transmission system using a magnetic induction at a frequency of 63.1 kHz. For comparison, a transmitter was designed using a superconducting coil and a normal coil. In addition, a receiver used a normal coil to apply for electric vehicles. The applied voltage and current were12 V and 5 A. Efficiency at a distance of 40 ~ 80 mm was measured. As a result, the superconducting transmission coil had a higher efficiency than the normal transmission coil. However, the receiving coil should be normal conductor for stable operation considering that it was put in moving electric vehicle. The efficiency was increased to 44 % at a distance of 40 mm when the diameter of normal receiving coil was 120 mm.
Keywords
Superconductor; Magnetic Induction; Wireless Power Transmission; Normal conductor; Electric Vehicle;
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  • Reference
1 B. J. Jang, “Wireless Power Transmission Technology Trends and Future Prospects” KIPE Magazine, vol.15, no.6, pp.27-31, 2010.
2 William C. Brown and a E. Eugene Eves. “Beamed Microwave Power Transmission and its Application to Space” IEEE Transactions On Microwave Theory and Techniques, vol.40. No.6, pp.1239-1250, 1992.   DOI   ScienceOn
3 Andre Kurs, AristeidisKaralis, J. D. Joannopoulos, and Marin Soljacic, “Wireless Power Transfer via Strongly Coupled Magnetic Resonances” Science, vol.317 no.5834 pp.83-86, 2007.   DOI   ScienceOn
4 AristeidisKaralis, J.D. Joannopoulos and Marin Soljacic, “Efficient wireless non-radiative mid-range energy transfer,” Elsevier Annals of Physics, vol.323, pp.34-48, 2008.   DOI   ScienceOn
5 W. John, P.Scholz, C. Reinhold, and G. Stonner, “Papierinfotragerhaben bald ausgedient,” Funkschau, vol. 3, pp.39–41, 2007.