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Design aspects of conductive microfiber rings for shaft-grounding purposes
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Muetze, Annette and Oh, H. William (2007) Design aspects of conductive microfiber rings for shaft-grounding purposes. In: 42nd Annual Meeting of the IEEE-Industry-Applications-Society, New Orleans, LA, 23-27 Sep 2007. Published in: Conference Record of the 2007 IEEE Industry Applications Conference Forty-Second IAS Annual Meeting, Volumes 1-5 pp. 229-236. ISBN 9781424412600. ISSN 0197-2618.
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Abstract
Carbon brushes using electrically conductive carbon graphite have been used for shaft-grounding and current-conduction purposes for a long time. We present an alternative brush concept made from millions of conductive microfibers. If properly designed, such brushes can meet all the demands on carbon brushes but exclude the problems of excessive wear and hot-spotting/thermal wear commonly quoted with the first. These brushes have negligible frictional wear, are free of maintenance, and robust towards contamination. In addition, they are especially suitable for use with high-frequency currents and voltages, as they also allow current-conduction based on electric field emission. We develop the design criteria for such brushes both for prevention of voltage build-up and current-conduction of several 10s of Amperes with frequencies in the MHz range. We support the theoretical results with measurement results taken at different rotor shaft speed.
Item Type: | Conference Item (Paper) | ||||
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Subjects: | Q Science > QC Physics T Technology > TJ Mechanical engineering and machinery T Technology > TK Electrical engineering. Electronics Nuclear engineering |
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Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | ||||
Library of Congress Subject Headings (LCSH): | Electric conductors -- Design and construction, Breakdown (Electricity), Bearings (Machinery), Electromotive force, Electric fields, Variable speed drives, Shafting | ||||
Series Name: | IEEE INDUSTRY APPLICATIONS SOCIETY ANNUAL MEETING | ||||
Journal or Publication Title: | Conference Record of the 2007 IEEE Industry Applications Conference Forty-Second IAS Annual Meeting | ||||
Publisher: | IEEE | ||||
ISBN: | 9781424412600 | ||||
ISSN: | 0197-2618 | ||||
Official Date: | 2007 | ||||
Dates: |
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Volume: | Volumes 1-5 | ||||
Number of Pages: | 8 | ||||
Page Range: | pp. 229-236 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Version or Related Resource: | Muetze, A. and Oh, W. (2008). Design Aspects of Conductive Microfiber Rings for Shaft-Grounding Purposes. IEEE Transactions on Industry Applications, 44(6), pp. 1749-1757. http://wrap.warwick.ac.uk/id/eprint/28923 | ||||
Conference Paper Type: | Paper | ||||
Title of Event: | 42nd Annual Meeting of the IEEE-Industry-Applications-Society | ||||
Type of Event: | Conference | ||||
Location of Event: | New Orleans, LA | ||||
Date(s) of Event: | 23-27 Sep 2007 | ||||
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