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U.S. Department of Energy
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Design, fabrication, and testing of a fast discharge homopolar machine (FDX)

Conference ·
OSTI ID:5154042
The Fast Discharge Experiment (FDX) is a 0.36 MJ, 200 V homopolar machine designed to discharge in one millisecond. All components, including dual brush actuation systems, a room-temperature 2 x 10/sup 6/ A-t pulsed copper coil, two aluminum rotors with copper slip rings, low inductance return conductors, coaxial transmission line, four fast closing (30 ..mu..sec), megamp switches, hydrostatic journal bearings, squeeze film thrust bearings and a fiberglass reinforced epoxy structure have been fabricated and assembled. The detail design of machine components is presented. Preliminary testing, including rotor spin-ups, brush actuation, switch making, and pulsed field coil tests have been concluded. A low speed, short-circuit discharge of FDX has recently been conducted. Experimental data from these tests are compared with theoretical predictions.
Research Organization:
Texas Univ., Austin (USA). Center for Electromechanics
OSTI ID:
5154042
Report Number(s):
CONF-771029-117
Country of Publication:
United States
Language:
English