Characteristics of contactless power transfer for HTS coil based on electromagnetic resonance coupling

Dae Wook Kim, Yoon Do Chung, Hyoung Ku Kang, Yong Soo Yoon, Tae Kuk Ko

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52 Citations (Scopus)


This paper describes a operating characteristics of contactless power transfer (CPT) system from normal conducting coil to HTS coil based on the electromagnet resonance coupling. The basic principle is that two separate coils with same resonance frequency are possible to form a resonant system based on high frequency magnetic coupling and exchange energy in a high efficiency. The CPT technique with the electromagnetic resonance coupling has been expected as a useful option for contactless charge and storage devices. Since the CPT technology using normal conducting coils is sensitive to tune impedance matching, the transfer power efficiency is limited. From this reason, we proposed the combination CPT technology with superconducting receiver coils, it is called as, superconducting contactless power transfer (SUCPT). The SUCPT system can reduce joint loss of superconducting connection and increase the portability of the superconducting system. In this study, as a fundamental step, the optimal power transfer conditions needed to generate inductive power transfer between normal conducting coils and superconducting coil were experimentally examined. The power transfer profile for coupled resonance coils with high frequency power was investigated in order to minimize operating power.

Original languageEnglish
Article number5400604
JournalIEEE Transactions on Applied Superconductivity
Issue number3
Publication statusPublished - 2012

Bibliographical note

Funding Information:
Manuscript received September 10, 2011; accepted December 05, 2011. Date of publication December 15, 2011; date of current version May 24, 2012. This work was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (Grant 2011-0009232). D. W. Kim and T. K. Ko are with the Department of Electrical and Electronic Engineering, Yonsei University, Seodaemoon-Gu, Seoul 120-749, Korea. Y. D. Chung is with the Department of Electrical Engineering, Suwon Science College, Suwon, Hwaseong-si, Gyeonggi-do 445-742, Korea (e-mail: H. K. Kang is with the Department of Electrical Engineering, Chungju National University, Chungju 380-702, Korea. Y. S. Yoon is with the Department of Electrical Engineering, Shin Ansan University, Danwon-Gu, Ansan-si 425-792, Korea. Color versions of one or more of the figures in this paper are available online at Digital Object Identifier 10.1109/TASC.2011.2179969

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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