Superconductor technology: apparatus – material – process – High temperature devices – systems – apparatus – com- ponents,... – Dynamoelectric machine – or components thereof
Patent
1994-07-14
1997-09-16
Stephan, Steven L.
Superconductor technology: apparatus, material, process
High temperature devices, systems, apparatus, com- ponents,...
Dynamoelectric machine , or components thereof
310 12, 104293, 104286, B60L 1310, H01F 600
Patent
active
056680902
ABSTRACT:
An electromagnet for a MAGLEV system incorporates at least one superconducting coil, operating in AC mode, which surrounds a multiple-pole iron core and is constructed from a layer of epoxy-impregnated pancake coils assembled together along a common axis within a cryostat. The windings of each pancake coil may be constructed from predetermined lengths of Bi(2223) superconductor tape. The coil preferably operates at 77 K. but any temperature lying in a range of 5 K. to 80 K. may be used. Two- and six-pole/coil magnets operating in either AC or DC mode are specifically disclosed.
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K. Sato et al. "High-Jc Silver-Sheathed Bi-Based Superconducting Wires," IEEE Transactions on Magnetics, vol. 27, No. 2, Mar. 1991.
P. Halder et al. "Processing High Critical Current Density Bi-2223 Wires and Tapes," JOM, Oct. 1992.
K. Sato et al., "Development of Silver-Sheated Bismuth Superconducting Wires and Their Application (invited)", J. Appl. Phys. 70 (10), Nov. 1991.
Anderson Terry J.
Grumman Aerospace Corporation
Hoch Jr. Karl J.
Jones Judson H.
Stephan Steven L.
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