Title :
Bi-2223 multifilament tapes and multistrand conductors for HTS power transmission cables
Author :
Leghissa, M. ; Fischer, B. ; Roas, B. ; Jenovelis, A. ; Wiezoreck, J. ; Kautz, S. ; Neumuller, H.-W. ; Reimann, C. ; Nanke, R. ; Muller, P.
Author_Institution :
Corp. Res. & Dev., Siemens AG, Erlangen, Germany
fDate :
6/1/1997 12:00:00 AM
Abstract :
For application in high-power transmission cables, multifilamentary 2223 BPSCCO/Ag tapes have been prepared using the powder-in-tube (PIT) process. Critical current densities at 77 K of 33 kA/cm/sup 2/ in short samples and 22 kA/cm/sup 2/ over 400 m have been achieved. Machine stranded flexible cable conductors have been made with a length up to 10.5 m. The electrical performance has been evaluated at 77 K both under DC and AC conditions, yielding a current capacity up to 1420 A and purely hysteretic AC losses. Tests of the mechanical stability under bending conditions and repeated thermal cycling showed no serious degradation of the electrical performance.
Keywords :
bismuth compounds; calcium compounds; copper compounds; critical current density (superconductivity); high-temperature superconductors; lead compounds; multifilamentary superconductors; power cable testing; power cables; silver; strontium compounds; superconducting cables; superconducting tapes; 10.5 m; 1420 A; 400 m; 77 K; Bi/sub 1.8/Pb/sub 0.4/Sr/sub 2/Ca/sub 2.1/Cu/sub 3/O-Ag; Bi/sub 1.8/Pb/sub 0.4/Sr/sub 2/Ca/sub 2.1/Cu/sub 3/O/Ag HTSC; HTS power transmission cables; bending conditions; critical current densities; electrical performance; hysteretic AC losses; mechanical stability; multifilament tapes; multistrand conductors; powder-in-tube preparation process; repeated thermal cycling; Conductors; Critical current density; High temperature superconductors; Hysteresis; Performance loss; Power transmission; Research and development; Superconducting cables; Testing; Wires;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
