Title :
Characteristic analysis of a heater-triggered switching system for the charging of Bi-2223 double-pancake load
Author :
Bae, Duck Kweon ; Yoon, Yong Soo ; Ahn, Min Cheol ; Ha, Hong Soo ; Ko, Tae Kuk ; Oh, Sang Soo
Author_Institution :
Dept. of Electr. & Electron. Eng., Yonsei Univ., Seoul, South Korea
fDate :
6/1/2003 12:00:00 AM
Abstract :
In this paper, characteristics of a heater-triggered switching system for the charging of Bi-2223 double pancake load with 1.7 mH has been analyzed through the simulations and experiments. Two heaters were used to store the energy in high-Tc superconducting (HTS) load. The timing of the sequential control and the heating current with two heaters are important factors to generate pumping-current. The thermal analysis of the switch considering the heater input and time was carried out. Based on the analysis just mentioned, the heater-triggered switch was fabricated. Characteristic analysis was carried out through two modes having different sequential timing controls. Maximum current stored in the HTS load reached 18 A and the pumping rate was 113 mA/s at that time.
Keywords :
high-temperature superconductors; power supplies to apparatus; superconducting coils; superconducting magnets; switching; 18 A; Bi-2223 double pancake load; BiPbSrCaCuO; HTS load; heater-triggered switching system; heating current; high-Tc superconducting load; pumping-current generation; sequential control; sequential timing controls; thermal analysis; Heat pumps; High temperature superconductors; Magnetic flux; Power supplies; Superconducting films; Superconducting magnetic energy storage; Superconducting magnets; Switches; Switching systems; Temperature control;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2003.813052
