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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 (2008) On a New Type of Inverter-Induced Bearing Current in Large Drives with One Journal Bearing. In: IEEE Industry-Applications-Society Annual Meeting, Alberta, Canada, Oct 05-09, 2008. Published in: Industry Applications Society. IEEE - IAS Annual Meeting. Conference Record pp. 548-555. ISBN 978-1-4244-2278-4. ISSN 0197-2618. doi:10.1109/08IAS.2008.84
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Official URL: http://dx.doi.org/10.1109/08IAS.2008.84
Abstract
We report on a new type of inverter-induced bearing current that can occur with large inverter-based drive systems with one journal bearing. This current is a variation of the "high-frequency circulating" bearing current type which has been described by different authors over the last years. As with the first, the bearing-current mirrors the common-mode current as a result of inductive coupling. However, the voltage across the bearing also mirrors the stator winding common-mode 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) | ||||
|---|---|---|---|---|---|
| Subjects: | T Technology | ||||
| Divisions: | Faculty of Science > Engineering | ||||
| Series Name: | IEEE INDUSTRY APPLICATIONS SOCIETY ANNUAL MEETING | ||||
| Journal or Publication Title: | Industry Applications Society. IEEE - IAS Annual Meeting. Conference Record | ||||
| Publisher: | IEEE | ||||
| ISBN: | 978-1-4244-2278-4 | ||||
| ISSN: | 0197-2618 | ||||
| Official Date: | 2008 | ||||
| Dates: |
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| Number of Pages: | 8 | ||||
| Page Range: | pp. 548-555 | ||||
| DOI: | 10.1109/08IAS.2008.84 | ||||
| Status: | Not Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Access rights to Published version: | Restricted or Subscription Access | ||||
| Title of Event: | IEEE Industry-Applications-Society Annual Meeting | ||||
| Type of Event: | Conference | ||||
| Location of Event: | Alberta, Canada | ||||
| Date(s) of Event: | Oct 05-09, 2008 |
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