Title :
Magnetic field analysis of HTS transformer windings with high currents
Author :
Chen, Min ; Yu, Yunjia J. ; Xiao, Liye Y. ; Wang, Qiuliang L. ; Chung, Wooho ; Kim, Keeman ; Baang, Sungkeun
Author_Institution :
Inst. of Electr. Eng., Chinese Acad. of Sci., Beijing, China
fDate :
6/1/2003 12:00:00 AM
Abstract :
The leakage magnetic field in HTS transformer windings fabricated by Bi-2223 tapes decreases the critical current and increases the ac losses in the tapes. Because of the anisotropy of the HTS tape, the numerical analysis of the radial component of the leakage field is especially important. In this paper the influence of the core structure and the winding configuration on the stray field is studied by finite element method, and some suggestions for improving the leakage field distribution are presented to make HTS transformers more efficient.
Keywords :
bismuth compounds; calcium compounds; copper compounds; critical current density (superconductivity); finite element analysis; high-temperature superconductors; magnetic leakage; strontium compounds; superconducting transformers; transformer windings; Bi-2223 tapes; Bi2Sr2Ca2Cu2O; HTS transformer windings; ac losses; core structure; critical current; finite element method; leakage field distribution; leakage magnetic field; magnetic field analysis; radial component; winding configuration; Anisotropic magnetoresistance; Coils; Critical current; Geometry; High temperature superconductors; Magnetic analysis; Magnetic cores; Magnetic fields; Transformer cores; Windings;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2003.813090
