Characteristics analysis of a high-Tc superconducting power supply considering flux creep effect

Yong Soo Yoon, Ho Min Kim, Minseok Joo, Duck Kweon Bae, Min Cheol Ahn, Tae Kuk Ko

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Abstract

This paper describes the characteristics analysis of a high-Tc superconducting (HTSC) power supply considering flux creep effect, and also presents its operational characteristics through experiments. The power supply can be employed to charge an HTSC magnet. An HTSC power supply consists of two heaters, an electromagnet, a Bi-2223 solenoid, and a series-connected Bi-2223 pancake load. The pancake load was fabricated by connecting four double pancake coils in series. In the experiments, two cases of the pumping period, which correspond to 8.5 and 17 s, were used with an electromagnet of 331 mH and a dc heater current of 0.8 A. A region of the superconducting tape with a buried heating coil can be switched by means of its temperature change. In order to measure the pumping-current with respect to the magnet flux changes, a hall sensor was installed at the center of the Bi-2223 pancake load. The experimental observations have been compared with the theoretical predictions. In this experiment, the pumping-current has reached about 22.9 A.

Original languageEnglish
Article number1687912
Pages (from-to)1918-1923
Number of pages6
JournalIEEE Transactions on Applied Superconductivity
Volume16
Issue number3
DOIs
Publication statusPublished - 2006 Sep 1

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All Science Journal Classification (ASJC) codes

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

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