This paper presents determination of heater triggering parameters of high-Tc superconducting (HTS) power supply with series-connected double-pancake load, as well as analysis of its characteristics as determined through experiments. A HTS power supply consists of two heaters, an electromagnet, a Bi-2223 solenoid, and a Bi-2223 series-connected double-pancake load of 6.0 mH. The timing sequential control of two heaters and an electromagnet is an important factor to generate pumping-current in the pancake 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 8 A electromagnet current and the 1.5 A dc heater current were optimally derived, and 8 s and 20 s for the pumping period were selected in this experiment. In the experiment, the maximum pumping current reached about 24 A.
Bibliographical noteFunding Information:
Manuscript received October 21, 2003. This work was supported by the Basic Research Program of the Korean Science and Engineering Foundation under Grant R05-2001-000-00960-0. Y. S. Kim, M. C. Kim, D. K. Bae, M. C. Ahn, W. Y. Cheon, 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). Y. S. Yoon is with the Department of Electrical Engineering, Ansan College of Technology, Ansan 425-792, Korea (e-mail: email@example.com). Digital Object Identifier 10.1109/TASC.2004.830017
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Electrical and Electronic Engineering