| Title |
10kVA high T_c Superconducting Power Transformer with Double Pancake Windings |
| Authors |
이희준(Lee, Hui-Jun) ; 차귀수(Cha, Gwi-Su) ; 이지광(Lee, Ji-Gwang) ; 한송엽(Han, Song-Yeop) ; 류경우(Ryu, Gyeong-U) ; 최경당(Choe, Gyeong-Dang) |
| Keywords |
HTS Transformer ; Double pancake winding ; Cryostat ; AC loss |
| Abstract |
This paper presents the design and test results of a 10kVA single phase HTS transformer which is operating at 77K. Double pancake windings with BSCCO -2223 HTS tape and GFRP cryostat with room temperature bore are used in the transformer. Four double pan cake windings were used in pancake windings are connected in parallel to conduct the secondary current of 45.4A. the rated voltages of each winding are 440/220V. Numerical calculation using Finite Element Method was used to evaluated the performance of each arrangement. Considering the magnetizing reactance, leakage reactance, electrical insulation and the circulating current in low voltage winding which had two windings in parallel, HLLH arrangement was finally chosen. Estimation of the AC loss, magnetizing loss and self field loss, in the design stage, where effects of perpendicular field and parallel field are considered. Room temperature bore type cryostat has been constructed and its heat loss was measured. |