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On a new type of inverter-induced bearing current in large drives with one journal bearing
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Muetze, Annette (2010) On a new type of inverter-induced bearing current in large drives with one journal bearing. In: 43rd Annual Meeting of the IEEE Industry Applications Society, Edmonton, Canada, October 05-09, 2008. Published in: IEEE Transactions on Industry Applications, Vol.46 (No.1). pp. 240-248. doi:10.1109/TIA.2009.2036672 ISSN 0093-9994.
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Official URL: http://dx.doi.org/10.1109/TIA.2009.2036672
Abstract
We report on a new type of inverter-induced bearing current (BC) that can occur with large inverter-based drive systems with one journal bearing. This current is a variation of the "high-frequency circulating" BC type that has been described by different authors over the last years. As with the first, the BC mirrors the common-mode (CM) current as a result of inductive coupling. However, the voltage across the bearing also mirrors the stator winding CM voltage and is not reduced to zero by the current flow. We show experimental results of measured currents and give physical explanations from which we then derive an effective mitigation technique, which is also illustrated through measurement results.
Item Type: | Conference Item (UNSPECIFIED) | ||||
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Subjects: | T Technology > TA Engineering (General). Civil engineering (General) T Technology > TK Electrical engineering. Electronics Nuclear engineering |
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Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | ||||
Journal or Publication Title: | IEEE Transactions on Industry Applications | ||||
Publisher: | IEEE | ||||
ISSN: | 0093-9994 | ||||
Official Date: | January 2010 | ||||
Dates: |
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Volume: | Vol.46 | ||||
Number: | No.1 | ||||
Number of Pages: | 9 | ||||
Page Range: | pp. 240-248 | ||||
DOI: | 10.1109/TIA.2009.2036672 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Title of Event: | 43rd Annual Meeting of the IEEE Industry Applications Society | ||||
Type of Event: | Conference | ||||
Location of Event: | Edmonton, Canada | ||||
Date(s) of Event: | October 05-09, 2008 |
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