Experimental analysis of flux pump for compensating current decay in the persistent current mode using HTS magnet

Hyun Chul Jo, Seong Eun Yang, Young Jae Kim, Ki Sung Chang, Jae Young Jang, Yong Soo Yoon, Yoon Do Chung, Ho Min Kim, Tae Kuk Ko

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5 Citations (Scopus)


The current decay of High temperature superconducting (HTS) magnet is larger than that of low temperature superconducting (LTS) magnet due to its lower n-value and higher joint resistance. To compensate the current decay in HTS magnet, various power supplies have been required. From this reason, as an option of power supply for HTS magnet, we have proposed a flux pump with heater trigger switch. In this paper, a performance and experimental analysis on a transformer type flux pump were presented. Characteristics of pumping rates with respect to change in the temperature and sequential timing of the heater-triggered switch were investigated. As well as, the pumping rates were carried out in the charging mode. Furthermore, the compensating actions were carried out in the persistent current mode using a feedback control unit.

Original languageEnglish
Article number5439743
Pages (from-to)1693-1696
Number of pages4
JournalIEEE Transactions on Applied Superconductivity
Issue number3
Publication statusPublished - 2010 Jun

Bibliographical note

Funding Information:
Manuscript received October 20, 2009. First published March 29, 2010; current version published May 28, 2010. This research was supported by National Research Lab. Program through the Korea Science and Engineering Foundation funded by the Ministry of Education, Science and Technology under Grant R0A-2007-000-20063-0. H. C. Jo, S. E. Yang, Y. J. Kim, K. S. Chang, J. Y. Jang, and T. K. Ko are with the School of Electrical and Electronic Engineering, Yonsei University, Seoul 120-749, Korea (e-mail: tkko@yonsei.ac.kr). Y. S. Yoon is with Ansan College of Technology, Ansan, Korea (e-mail: ysyoon@ansantc.ac.kr). Y. D. Chung is with the Industry Administration Institute, University of Suwon, Korea (e-mail: ydchung@suwon.ac.kr). H. M. Kim is with KERI, Changwon, Korea (e-mail: homin@keri.re.kr). Color versions of one or more of the figures in this paper are available online at http://ieeexplore.ieee.org. Digital Object Identifier 10.1109/TASC.2010.2040474

All Science Journal Classification (ASJC) codes

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


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