Design, fabrication and testing of a high-Tc superconducting power supply with the Bi-2223 load

Author

Kim, Ho Min ; Yoon, Yong Soo ; Ahn, Min Cheol ; Ko, Tae Kuk ; Lee, Sang-Jin ; Han, Tae-Su

Author_Institution

Dept. of Electr. & Electron. Eng., Yonsei Univ., Seoul, South Korea

Volume

12

Issue

1

fYear

2002

fDate

3/1/2002 12:00:00 AM

Firstpage

837

Lastpage

841

Abstract

This paper presents the design and fabrication of a high-Tc superconducting (HTS) power supply. Its characteristics have been analyzed through experiments. A HTS power supply consists of two heaters, an electromagnet, and a Bi-2223 solenoid and a Bi-2223 pancake load. The timing sequential control of two heaters and an electromagnet is an important factor to generate pumping-current in the Bi-2223 load. The thermal analysis of switching parts of the Bi-2223 solenoid according to the heater input was carried out. Based upon the analysis, the 331 mH electromagnet and the 0.8 A DC heater current were optimally derived, and 8.5 sec and 17 sec for the pumping period were selected in this experiment. In the experiment, the maximum pumping current reached 1.7 A.

Keywords

bismuth compounds; calcium compounds; high-temperature superconductors; power supplies to apparatus; strontium compounds; superconducting magnets; testing; thermal analysis; 0.8 A; 1.7 A; 8.5 sec; Bi-2223 load; Bi₂Sr₂Ca₂Cu₃O; DC heater current; electromagnet; heater input; heaters; high-Tc superconducting power supply; pancake load; pumping-current; solenoid; switching parts; thermal analysis; timing sequential control; Electromagnetic heating; Electromagnets; Fabrication; Heat pumps; High temperature superconductors; Power supplies; Solenoids; Temperature control; Testing; Timing;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2002.1018531

Filename

1018531