Title :
Study on a cross section of high temperature superconducting coil
Author :
Ishiguri, Shinichi ; Yamaguchi, Mitsugi ; Fukui, Satoshi ; Sato, Takao
Author_Institution :
Niigata Univ., Japan
fDate :
6/1/2004 12:00:00 AM
Abstract :
The fitting equations of critical current and n values were derived from measured data of Ag-sheathed Bi-2223 tapes concerning the magnetic fields and flux angles at 77 K. The critical current of a high temperature superconducting coil can be calculated with these equations together with a magnetic field analysis of a coil. Critical current, magnetic field, flux flow loss, stored energy, etc. were calculated for HTS coils with various coil aspect ratios along the curve, where Fabry factor F of 1.97 was kept constant. It was made clear that the central magnetic field per coil volume is maximum at the coil aspect ratio providing the minimum coil volume.
Keywords :
bismuth compounds; calcium compounds; critical currents; flux flow; high-temperature superconductors; lead compounds; magnetic fields; silver; strontium compounds; superconducting coils; superconducting tapes; (BiPb)Sr2Ca2Cu3O10-Ag; 77 K; Ag; Ag-sheathed Bi-2223 tapes; Fabry factor; HTS coils; coil aspect ratio; critical current; flux angles; flux flow loss; high-temperature superconductor coil; magnetic field analysis; magnetic fields; stored energy; Critical current; Current measurement; Current-voltage characteristics; Equations; High temperature superconductors; Magnetic analysis; Magnetic field measurement; Magnetic fields; Superconducting coils; Temperature dependence; Coil aspect ratio; Fabry factor; HTS coil; critical current; cross section; flux flow loss; stored energy;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2004.830883
