Composite ceramic superconducting wires for electric-motor applications. Quarterly report No. 3, 31 January 1989-31 March 1989

Technical Report · Fri Apr 28 00:00:00 EDT 1989

OSTI ID:5608328

Halloran, J W

This report describes progress on developing Y-123 wire for an HTSC motor. The wire is produced by spinning and heat treating fiber to produce metallized superconducting filaments. Development continued on spinning Y-123 green fiber. The diameter of continuous Y-123 green fiber was reduced to 75 microns. A belt furnace is being reconfigured for continuous sintering of fibers and a prototype cladding module for multi-filament ribbon wire is being fabricated. There has been an improvement in 77 K (self-field) critical current density of Y-123 filaments, up to 2400A/sq cm for the best filament, with 1500 A/sq cm for a typical filament. Similar results are seen for silver clad filaments. Preliminary data suggests an important effect of specimen length on transport critical current of thin filaments of weak-linked specimens. At Emerson Electric the characteristics of DC homopolar, DC heteropolar, reluctance, and induction HTSC motors were determined theoretically. A DC homopolar and an induction motor with superconducting stator windings were selected as final candidates for the proof-of-principle motor. M. Hilal of the University of Wisconsin developed a model for AC losses in HTSC wire, including eddy current and hysteresis losses.

• Research Organization: Ceramics Process Systems Corp., Milford, MA (USA)
• OSTI ID: 5608328
• Report Number(s): AD-A-208598/3/XAB; CPS-89-007
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ELECTRIC MOTORS
SUPERCONDUCTING WIRES
FABRICATION
ALTERNATING CURRENT
CERAMICS
CLADDING
COMPOSITE MATERIALS
CURRENT DENSITY
FIBERS
FILAMENTS
FURNACES
HYSTERESIS
LOSSES
PROGRESS REPORT
SILVER
SINTERING
STATORS
CURRENTS
DEPOSITION
DOCUMENT TYPES
ELECTRIC CURRENTS
ELEMENTS
MATERIALS
METALS
MOTORS
SURFACE COATING
TRANSITION ELEMENTS
WIRES
420201* - Engineering- Cryogenic Equipment & Devices