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.
Bibliographical noteFunding Information:
Manuscript received January 28, 2001; revised May 23, 2001. This work was supported by the Basic Research Program of the Korea Science & Engineering Foundation under Grant no. 2001-1-30 200-027-3. The review of this paper was supervised by Editor S. W. Schwenterly. Y. S. Yoon is with the Department of Electrical Engineering, Ansan College of Technology, Ansan 425-792, Korea (e-mail: email@example.com). H. M. Kim, M. C. Ahn, C. Lee, and T. K. Ko are with the Department of Electrical and Electronic Engineering, Yonsei University, Seoul 120-749, Korea (e-mail: firstname.lastname@example.org). S.-S. Oh is with the Korea Electrotechnology Research Institute, Changwon 641-120, Korea (e-mail: email@example.com). Publisher Item Identifier S 1051-8223(01)09336-8.
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Electrical and Electronic Engineering