Damper windings in induction machines for reduction of unbalanced magnetic pull and bearing wear

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dc.contributor.author Dorrell, David en_US
dc.contributor.author Shek, Jonathan en_US
dc.contributor.author Mueller, Markus en_US
dc.contributor.author Hsieh, Min-Fu en_US
dc.contributor.editor NA en_US
dc.date.accessioned 2012-10-12T03:36:32Z
dc.date.available 2012-10-12T03:36:32Z
dc.date.issued 2011 en_US
dc.identifier 2011004501 en_US
dc.identifier.citation Dorrell David et al. 2011, 'Damper windings in induction machines for reduction of unbalanced magnetic pull and bearing wear', , IEEE, Piscataway, USA, , pp. 1612-1619. en_US
dc.identifier.issn 978-1-4577-0542-7 en_US
dc.identifier.other E1 en_US
dc.identifier.uri http://hdl.handle.net/10453/19282
dc.description.abstract In large induction machines (such as cage large induction motor pumps in the petro-chemical industry and cage or wound-rotor induction generators in wind turbines) reliability and longevity is advantageous. This is particularly relevant to wind turbine generators which can be inaccessible. There will be some degree of tolerance and wear that will lead to low-level rotor eccentricity. For a pm-pole pair machine there will be pm?1 pole pair flux waves set up by the eccentricity which will generate unbalanced magnetic pull (UMP), as well as additional higher space harmonics. This paper addresses the use of stator damper windings to reduce the side-band flux waves and hence attenuate the UMP. Examples are put forward in terms of a 10 pole cage-rotor machine with static or dynamic rotor eccentricity and then extended to use a 4 pole machine wound-rotor machine. A tested analytical model is developed to include these damper windings and the wound rotor; they are shown to reduce the UMP, particularly in a wound-rotor machine. The simulations here are in terms of a wound-rotor machine but this can be extended for DFIG operation. en_US
dc.language en_US
dc.publisher IEEE en_US
dc.relation.isbasedon http://dx.doi.org/10.1109/ECCE.2011.6063975 en_US
dc.title Damper windings in induction machines for reduction of unbalanced magnetic pull and bearing wear en_US
dc.parent 2011 IEEE Energy Conversion Congress and Exposition (ECCE) en_US
dc.journal.volume en_US
dc.journal.number en_US
dc.publocation Piscataway, USA en_US
dc.identifier.startpage 1612 en_US
dc.identifier.endpage 1619 en_US
dc.cauo.name FEIT.Faculty of Engineering & Information Technology en_US
dc.conference Verified OK en_US
dc.for 090600 en_US
dc.personcode 105721 en_US
dc.personcode 0000074251 en_US
dc.personcode 0000074253 en_US
dc.personcode 0000051493 en_US
dc.percentage 100 en_US
dc.classification.name Electrical and Electronic Engineering en_US
dc.classification.type FOR-08 en_US
dc.edition en_US
dc.custom IEEE Energy Conversion Congress and Exposition en_US
dc.date.activity 20110917 en_US
dc.location.activity Phoeix, USA en_US
dc.description.keywords Air gaps , Harmonic analysis , Rotors , Shock absorbers , Stator windings , Windings en_US


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