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Content Provider | IEEE Xplore Digital Library |
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Author | Dorrell, D.G. Shek, J. Min-Fu Hsieh Mueller, M.A. |
Copyright Year | 1965 |
Abstract | The paper addresses unbalanced magnet pull (UMP) due to rotor eccentricity in cage induction generators used in wind turbines. The rationale for the work is to investigate ways to reduce bearing wear. The paper studies both static and dynamic rotor eccentricity with axial uniformity and also non-uniformity (e.g., due to a misplaced bearing). The damping action of the cage is discussed and a suitable analytical model used to calculate the UMP. Both sub- and super-synchronous UMP is investigated. It is found that the characteristic for the UMP varies depending on whether there is static or dynamic eccentricity. A use of additional damper windings is also investigated and it is found that these can help substantially reduce the UMP when the machine is lightly loaded with dynamic eccentricity. A previously investigated 10-pole machine is used in the simulations. The analytical model has previously been validated for this. The range of simulation covers both motoring and generating modes (±10% slip). This, together with the simulation of the UMP damping windings, represents a good contribution to the literature since they have not been previously addressed. |
Sponsorship | IEEE Magnetics Society |
Starting Page | 4096 |
Ending Page | 4099 |
Page Count | 4 |
File Size | 456123 |
File Format | |
ISSN | 00189464 |
Volume Number | 47 |
Issue Number | 10 |
Language | English |
Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Publisher Date | 2011-10-01 |
Publisher Place | U.S.A. |
Access Restriction | One Nation One Subscription (ONOS) |
Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Subject Keyword | Rotors Windings Shock absorbers Harmonic analysis Air gaps Stator windings Generators wind generators Cage induction machine unbalanced magnetic pull |
Content Type | Text |
Resource Type | Article |
Subject | Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering |
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