Title :
Analysis of the operational characteristics of discrete-sheet type low-Tc superconducting power supply
Author :
Kim, Ho Min ; Yoon, Yong Soo ; Ahn, Min Cheol ; Chu, Yong ; Lee, Sang-Jin ; Han, Tae-Su ; Oh, Sang-Soo ; Ko, Tae Kuk
Author_Institution :
Dept. of Electr. & Electr. Eng., Yonsei Univ., Seoul, South Korea
fDate :
3/1/2001 12:00:00 AM
Abstract :
This paper deals with comparison of characteristics of continuous-sheet type low-Tc superconducting (LTS) power supply and discrete-sheet type LTS power supply. These characteristics have been analyzed through experiments. These power supplies consist of two exciters, a rotor, a stator, and LTS Load. A continuous-sheet type has a single continuous niobium (Nb) sheet attached to the inner surface of on the stator. In the case of discrete-sheet type, four separated Nb sheets are used. This experiment uses a 1.81 mH LTS magnet load and maximum 30 A DC exciter current. A discrete-sheet type is expected to produce much better pumping rate than a continuous-sheet type. The experimental observations have been compared with the theoretical predictions. In this experiment, the maximum pumping-current has reached about 926 A
Keywords :
exciters; power supplies to apparatus; rotors; stators; superconducting machines; 30 A; 926 A; continuous-sheet type; discrete-sheet type; discrete-sheet type LTS power supply; discrete-sheet type low-Tc superconducting power supply; exciter current; exciters; magnet load; maximum pumping-current; operational characteristics; pumping rate; rotor; single continuous niobium sheet; stator; stator inner surface; Equations; Equivalent circuits; High temperature superconductors; Inductance; Magnetic flux; Niobium; Power supplies; Pumps; Stators; Superconducting magnets;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
