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Design aspects of conductive microfiber rings for shaft-grounding purposes
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Muetze, Annette and Oh, H. William (2008) Design aspects of conductive microfiber rings for shaft-grounding purposes. In: 42nd Annual Meeting of the IEEE-Industry-Applications-Society, New Orleans, LA, Sep 23-27, 2007. Published in: IEEE Transactions on Industry Applications, Volume 44 (Number 6). pp. 1749-1757. doi:10.1109/TIA.2008.2006421 ISSN 0093-9994.
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Official URL: http://dx.doi.org/10.1109/TIA.2008.2006421
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 and hot-spotting/thermal wears commonly quoted with the first. These brushes have ultralow friction and negligible wear and are very robust toward contamination, when compared with conventional carbon-based brushes. In addition, they are particularly 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 buildup and current conduction of several tens of amperes with frequencies in the megahertz range. We support the theoretical results with measurement results taken at different rotor shaft speed.
Item Type: | Conference Item (UNSPECIFIED) | ||||
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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 | ||||
Journal or Publication Title: | IEEE Transactions on Industry Applications | ||||
Publisher: | IEEE | ||||
ISSN: | 0093-9994 | ||||
Official Date: | November 2008 | ||||
Dates: |
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Volume: | Volume 44 | ||||
Number: | Number 6 | ||||
Number of Pages: | 9 | ||||
Page Range: | pp. 1749-1757 | ||||
DOI: | 10.1109/TIA.2008.2006421 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Restricted or Subscription Access | ||||
Description: | Paper IPCSD-08-014, presented at the 2007 Industry Applications Society Annual Meeting, New Orleans, LA, September 23–27. |
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Version or Related Resource: | Muetze, A. and Oh, W. (2007). Conference Record of the 2007 IEEE Industry Applications Conference Forty-Second IAS Annual Meeting. Vols 1-5, pp. 229-236. http://wrap.warwick.ac.uk/id/eprint/29103 | ||||
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: | Sep 23-27, 2007 | ||||
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