Analysis of the operational characteristics of a high-Tc superconducting power supply with the Bi-2223 pancake load

Author

Yoon, Yong Soo ; Kim, Ho Min ; Ahn, Min Cheol ; Lee, Chanjoo ; Ko, Tae Kuk ; Oh, Sang-Soo

Author_Institution

Dept. of Electr. Eng., Ansan Coll. of Technol., South Korea

Volume

11

Issue

3

fYear

2001

fDate

9/1/2001 12:00:00 AM

Firstpage

4071

Lastpage

4077

Abstract

This paper presents the design and fabrication of a high-Tc superconducting (HTSC) power supply with the Bi-2223 pancake load, as well as its characteristics as determined through experiments. HTSC power supply consists of two heaters, an electromagnet, a Bi-2223 solenoid, and a Bi-2223 pancake load. In this experiment, a 331-mH electromagnet and 0.8-A dc heater current were used, and 8.5 and 17 s were used for pumping periods, respectively. Mechanism of the superconducting switch is used for heater-trigger. 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 0.6 A with 0.01-V electromagnet voltage.

Keywords

bismuth compounds; calcium compounds; high-temperature superconductors; power supplies to apparatus; strontium compounds; superconducting magnets; Bi-2223 pancake load; Bi-2223 solenoid; Bi₂Sr₂Ca₂Cu₃O; Hall sensor; electromagnet; heater-trigger; high-Tc superconducting power supply; magnetic flux; pumping current; superconducting switch; Electromagnetic heating; Electromagnetic measurements; Electromagnets; Fabrication; Heat pumps; Magnetic flux; Power supplies; Solenoids; Superconducting magnets; Switches;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2001.962257

Filename

962257