Title :
AC losses of filamentary HTS twisted filament round wires and flat tapes
Author :
Darmann, F. ; Zhao, R. ; McCaughey, G. ; Apperley, M. ; Beales, T.P. ; Friend, C.
Author_Institution :
High Temp. Supercond. Dev. Fac., MM Cables, Eveleigh, NSW, Australia
fDate :
6/1/1999 12:00:00 AM
Abstract :
Samples of multifilamentary Bi-2223/Ag/alloy twisted filament tapes and Z stack round wires, consisting of untwisted and twisted stacks (or z-arrays) of flat filaments have been prepared. It was found that twist pitches of less than 10 mm may be incorporated into multifilament tapes while maintaining the Jc at 20 kA/cm/sup 2/. The self-field AC loss has been investigated at low frequencies up to 100 Hz. The round wire was found to exhibit isotropic electromagnetic properties.
Keywords :
bismuth compounds; calcium compounds; high-temperature superconductors; loss measurement; multifilamentary superconductors; silver; strontium compounds; superconducting tapes; AC losses; Bi/sub 2/Sr/sub 2/Ca/sub 2/Cu/sub 3/O-Ag; Z stack round wires; filamentary HTS twisted filament round wires; flat filaments; flat tapes; isotropic electromagnetic properties; low frequencies; multifilament tapes; multifilamentary Bi-2223/Ag/alloy twisted filament tapes; self field AC loss; twist pitches; twisted stacks; untwisted stacks; z-arrays; Australia; Electric variables measurement; High temperature superconductors; Hysteresis; Lead; Loss measurement; Manufacturing; Superconducting cables; Voltage; Wires;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
