Title :
The Electromagnetic Analysis and Structural Design of a 1 MJ HTS Magnet for SMES
Author :
Zhang, Jingye ; Dai, Shaotao ; Wang, Zikai ; Zhang, Dong ; Song, Naihao ; Gao, Zhiyuan ; Zhang, Fengyuan ; Xu, Xi ; Zhu, Zhiqin ; Zhang, Guomin ; Lin, Liangzhen ; Xiao, Liye
Author_Institution :
Key Lab. of Appl. Supercond., Chinese Acad. of Sci., Beijing, China
fDate :
6/1/2011 12:00:00 AM
Abstract :
An HTS magnet was designed and fabricated for the 1 MJ/0.5 MVA SMES. It consists of 44 double pancakes with an inductance of 6.28 H, and the rated operating current is 565 A. In this paper, the electromagnetic analysis and the structural design of the magnet are presented. Because of the strong anisotropy of Bi2223/Ag tape, the field distribution can seriously affect the performances of the magnet. Its magnetic field distribution is analysed by means of finite element method (FEM). Similarly, the critical current (Ic) distribution of each turn in the magnet is also calculated. Based on the analyses and calculations, the structural design of the magnet for 1 MJ/0.5 MVA SMES is finished. In order to obtain a uniform current distribution between co-wound tapes in the same double pancake and among the parallel connected double pancakes, special methods are developed for the structural design.
Keywords :
finite element analysis; high-temperature superconductors; superconducting magnet energy storage; superconducting magnets; FEM; HTS magnet; SMES; current 565 A; electromagnetic analysis; finite element method; magnetic field distribution; parallel connected double pancakes; structural design; High temperature superconductors; Magnetic analysis; Magnetomechanical effects; Perpendicular magnetic anisotropy; Stress; Superconducting magnetic energy storage; Double-pancake; HTS magnet; SMES; electromagnetic analysis;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2010.2098010
