Title :
A Novel Quench Protection Technique for HTS Coils
Author :
Wakuda, T. ; Ichiki, Y. ; Park, M.
Author_Institution :
Hitachi Res. Lab., Hitachi, Ltd., Hitachi, Japan
fDate :
6/1/2012 12:00:00 AM
Abstract :
A new coil winding method to realize quench-back with an over-current pulse for HTS magnet protection is proposed. The feature of the inter-wire bridged parallel winding (IPW) is that a large inductive voltage and additional eletro-magnetic force on the coil are not generated when the quench-back trigger current is imposed on the coil. A quench-back test was performed with a DI-BSCCO tape with a self-field at around 78 K. The applicability of the quench-back technique for a HTS coil is discussed.
Keywords :
bismuth compounds; calcium compounds; copper compounds; high-temperature superconductors; strontium compounds; superconducting coils; superconducting magnets; superconducting tapes; BiSr2CaCu2O3; DI-BSCCO tape; HTS coils; HTS magnet protection; IPW; coil winding method; eletro-magnetic force; inductive voltage; interwire bridged parallel winding; over-current pulse; quench protection technique; quench-back trigger current; Coils; Heating; High temperature superconductors; Inductance; Superconducting magnets; Windings; Wires; High Tc superconductors (HTS); quench protection; quench-back; superconducting magnet;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2011.2180692
