Design of a high-current downlink using Bi-based superconductors [electronic resource].

Published:: Washington, D.C. : United States. Dept. of Energy, 1996.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description:: 5 pages : digital, PDF file
Additional Creators:: Argonne National Laboratory, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information

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Summary:

Recent processing developments in Bi{sub 1.8}Pb{sub 0.4}Sr₂Ca₂Cu₃0ₓ (BSCCO-2223) bars have produced bulk BSCCO-2223 bars with properties advantageous for power applications. Cold isostatically pressed (CIP) and sinter-forged BSCCO-2223 both have low AC loss, which make them desirable for use in power devices. Thermal conductivity of the CIP bars is lower than that of the previously used sinter-forged samples by a factor of 2. CIP bars with cross-sectional areas of =0.75 cm² and carrying 250 A RMS transport current have AC loss values of 30 pJ/cycle-cm at 50 Hz and 77 K. A pair of prototype downlinks were designed and built with sinter forged bars to deliver a continuous AC current of 1500 A over a temperature gradient of 77 to 4.2 K while delivering about -200 MW of heat to the liquid-helium-cooled end. This paper will discuss the design considerations and modeling of downlinks, which supply high AC currents over the 77 to 4.2 K temperature gradient with low thermal losses.

Report Numbers:

E 1.99:anl/et/cp--88998
E 1.99: conf-960850--8
conf-960850--8
anl/et/cp--88998

Subject(s):

Materials Science

Other Subject(s):

Note:

Published through SciTech Connect.
08/01/1996.
"anl/et/cp--88998"
" conf-960850--8"
"DE96014863"
Applied superconductivity conference, Pittsburgh, PA (United States), 25-30 Aug 1996.
Fisher, B.L.; Lanagan, M.T.; Balachandran, U.; Hara, T.; Honjo, S.

Funding Information:

W-31109-ENG-38

View MARC record | catkey: 14454744