Title :
Long length calorimetric measurement of AC losses of Bi-2223 external field oriented perpendicular to the tape width
Author :
Snitchler, G. ; Campbell, J. ; Aized, D. ; Sidi-Yekhlef, A. ; Fleshler, S. ; Kalsi, S. ; Schwall, R.
Author_Institution :
American Superconductor Corp., Westborough, MA, USA
fDate :
6/1/1997 12:00:00 AM
Abstract :
AC applications are projected to be a significant market for HTS conductor. The AC magnetic fields perpendicular to the wide face of Bi-2223 conductor (or parallel to the crystallographic c-axis of the oxide superconductor) are responsible for a significant portion of the total loss in AC coils. ASC has developed a calorimetric apparatus which can measure long lengths of conductor in a uniform continuous perpendicular field. This apparatus provides Accurate measurement of interfilament or interstrand coupling losses. Calorimetric measurements from long lengths of twisted multifilamentary conductor are presented.
Keywords :
bismuth compounds; calcium compounds; calorimetry; high-temperature superconductors; lead compounds; loss measurement; magnetic leakage; magnetic variables measurement; multifilamentary superconductors; strontium compounds; (BiPb)/sub 2/Sr/sub 2/Ca/sub 2/Cu/sub 3/O; AC applications; AC losses; AC magnetic fields; HTS conductor; external field; interfilament coupling losses; interstrand coupling losses; long length calorimetric measurement; tape width; twisted multifilamentary conductor; uniform continuous perpendicular field; Conductors; High temperature superconductors; Inductors; Length measurement; Loss measurement; Magnetic field measurement; Multifilamentary superconductors; Nitrogen; Superconducting coils; Transformers;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
