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

David G. Dorrell, Jonathan K.H. Shek, Markus A. Mueller, Min-Fu Hsieh

研究成果: Conference contribution

5 引文 斯高帕斯(Scopus)

摘要

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 p m±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.

原文English
主出版物標題IEEE Energy Conversion Congress and Exposition
主出版物子標題Energy Conversion Innovation for a Clean Energy Future, ECCE 2011, Proceedings
頁面1612-1619
頁數8
DOIs
出版狀態Published - 2011 十一月 28
事件3rd Annual IEEE Energy Conversion Congress and Exposition, ECCE 2011 - Phoenix, AZ, United States
持續時間: 2011 九月 172011 九月 22

出版系列

名字IEEE Energy Conversion Congress and Exposition: Energy Conversion Innovation for a Clean Energy Future, ECCE 2011, Proceedings

Other

Other3rd Annual IEEE Energy Conversion Congress and Exposition, ECCE 2011
國家/地區United States
城市Phoenix, AZ
期間11-09-1711-09-22

All Science Journal Classification (ASJC) codes

  • 能源工程與電力技術
  • 可再生能源、永續發展與環境

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