Progress in Superconductivity and Cryogenics (한국초전도ㆍ저온공학회논문지)

The Korean Society of Superconductivity and Cryogenics (한국초전도저온학회)
권호 표지
DOI QR코드

DOI QR Code

Design and characteristic investigations of superconducting wireless power transfer for electric vehicle charging system via resonance coupling method

  • Chung, Y.D. (Suwon Science College) ;
  • Yim, Seong Woo (Korea Electric Power Corporation Research Institute)
  • Received : 2014.09.04
  • Accepted : 2014.09.25
  • Published : 2014.09.30
Download PDF
⟨ Previous Next ⟩

Abstract

As wireless power transfer (WPT) technology using strongly coupled electromagnetic resonators is a recently explored technique to realize the large power delivery and storage without any cable or wire, this technique is required for diffusion of electric vehicles (EVs) since it makes possible a convenient charging system. Typically, since the normal conducting coils are used as a transmitting coil in the CPT system, there is limited to deliver the large power promptly in the contactless EV charging system. From this reason, we proposed the combination CPT technology with HTS transmitting antenna, it is called as, superconducting contactless power transfer for EV (SUWPT4EV) system. As the HTS coil has an enough current density, it can deliver a mass amount of electric energy in spite of a small scale antenna. The SUCPT4EV system has been expected as a noble option to improve the transfer efficiency of large electric power. Such a system consists of two resonator coils; HTS transmitting antenna (Tx) coil and normal conducting receiver (Rx) coil. Especially, the impedance matching for each resonator is a sensitive and plays an important role to improve transfer efficiency as well as delivery distance. In this study, we examined the improvement of transmission efficiency and properties for HTS and copper antennas, respectively, within 45 cm distance. Thus, we obtained improved transfer efficiency with HTS antenna over 15% compared with copper antenna. In addition, we achieved effective impedance matching conditions between HTS antenna and copper receiver at radio frequency (RF) power of 370 kHz.

Keywords

References

  1. K. Finkenzeller, RFID Handbook: Fundamentals and applications in contactless smart cards and identification, 2nd ed. New York: Wiley, 2003, ch. 4.
  2. Y.J Byun, "2013 Seminar of Wireless power transfer technology" Society of wireless power transfer technology in the Korea Institute of Electrical Engineers (KIEE).
  3. A. Kurs, A. Karalis, R. Moffatt, J. D. Joannopoulos, P. Fisher, M. Soljacic, "Wireless power transfer via strongly coupled magnetic resonances," Science, vol. 317, no. 5834, pp. 83-86, 2007. https://doi.org/10.1126/science.1143254
  4. A. Karalis, J. Joannopoulos, M. Soljacic, "Efficient wireless nonradiative mid-range energy transfer," Annals of Physics, vol. 323, no. 1, pp. 34-48, 2008. https://doi.org/10.1016/j.aop.2007.04.017
  5. D.W. Kim, Y.D. Chung, H.K. Kang, Y.S. Yoon, H.M. Kim, T.K. Ko, "Effects and properties of contactless power transfer for HTS receiver coils via electromagnetic resonance coupling," IEEE Transactions on Applied Superconductivity, vol. 23, no. 3, Part. 2, pp. 5500404, 2013. https://doi.org/10.1109/TASC.2012.2231460
  6. D.W. Kim, Y.D. Chung, H.K. Kang, Y.S. Yoon, T.K. Ko, "Characteristics of contactless power transfer for HTS coil based on electromagnetic resonance coupling," IEEE Transactions on Applied Superconductivity, vol. 22, no. 3, pp. 5400604, 2012. https://doi.org/10.1109/TASC.2011.2179969
  7. Yoon Do Chung, Seong Woo Yim, Si Dole Hwang, "Feasible approach of contactless power transfer technology combined with HTS coils based on electromagnetic resonance coupling," Journal of Progress in Superconductivity and Cryogenics, vol. 15, no. 1, pp. 40-44, 2013.
  8. T. C. Beh, T. Imura, M. Kato, Y. Hori, "Basic study of improving efficiency of wireless power transfer via magnetic resonance coupling based on impedance matching," 2010 IEEE International Symposium on Industrial Electronics, pp. 2011-2016, 2010.