| Title |
3-D Magnetostatic Finite Element Simulation of a Low-Tc Superconducting Power Supply with Respect to the Excitation Current |
| Authors |
배덕권(Bae, Deok-Gwon) ; 김호민(Kim, Ho-Min) ; 이찬주(Lee, Chan-Ju) ; 윤영수(Yun, Yeong-Su) ; 이상진(Lee, Sang-Jin) |
| Keywords |
LTS superconducting power supply finite element method ; cryogenic system ; superconducting foil |
| Abstract |
In this paper, 3-D magnetostatic finite element simulation of a rotux type Low-Tc superconducing (LTS) superconducting power supply, finite element method, cryogenic system, superconducting foil by generated magnetic flux from the rotating pole. The magnetic flux density on the superconducting foil caused by two exciters is therefore sufficiently greater than its critical magnetic flux density and it is an essential point in LTS power supply design. To establish the sufficient flux path of this machine, ferromagnetic materials is used in this power supply. When ferromagnetic materials is used at extremely low temperature, its characteristic of magnetization differs to that at room temperature. For this reason, special consideration is needed in the magnetic analysis of cryogenic systems. When the excitation current is 10A, the normal spot appears on superconducting foil. The results of this analysis are calculated and compared with the experimental results. The linkage flux due to the excitation current of 10, 20, 30, 40 and 50A are respectively 1.30×10-4, 2.67×10-4, 5.08×10-4 and 6.15×10-4Wb. |