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High Current and High Current Density Pulse Tests of Brushes and Collectors for Homopolar Energy Stores

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1 Author(s)
Marshall, R. ; University of Texas,Austin, TX

The incentive exists to use high collector current densities in pulsed duty homopolar generators, the current densities of interest being in the range of 15--45 MA/m2. Tests have been conducted in which current pulses of up to 0.25 MA with an equivalent pulsewidth of 0.3 s have been passed between pancake brush assemblies and fiat plate collectors with collector current densities of up to 78 MA/m2and current densities in the brush fingers of 570 MA/m2. The currents carried per brush have been a comparatively low 800 A. These tests have been successful and are providing the data necessary for the design of the all-iron-rotating homopolar pulse generators.

Published in:

Components, Hybrids, and Manufacturing Technology, IEEE Transactions on  (Volume:4 ,  Issue: 1 )

Date of Publication:

Mar 1981

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