Condition monitoring and fault diagnosis of a wind turbine synchronous generator drive train

Author(s): W. Yang ; P.J. Tavner ; M.R. Wilkinson
DOI: 10.1049/iet-rpg:20080006

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Author(s): W. Yang ^{1, 2} ; P.J. Tavner ¹ ; M.R. Wilkinson ³
- Affiliations: 1: New and Renewable Energy Group, School of Engineering, Durham University, Durham, UK
  2: Institute of Vibration Engineering, Northwestern Polytechnical University, Xi'an, People's Republic of China
  3: Institute of Vibration Engineering, Garrad Hassan and Partners Ltd, Bristol, UK
Source: Volume 3, Issue 1, March 2009, p. 1 – 11
DOI: 10.1049/iet-rpg:20080006 , Print ISSN 1752-1416, Online ISSN 1752-1424

Some large grid connected wind turbines use a low-speed synchronous generator, directly coupled to the turbine, and a fully rated converter to transform power from the turbine to mains electricity. The condition monitoring and diagnosis of mechanical and electrical faults in such a machine are considered, bearing in mind that it has a slow variable speed and is subject to the stochastic, aerodynamic effects of the wind. The application of wavelet transforms is investigated in the light of the disadvantages of spectral analysis in processing signals subject to such stochastic effects. The technique can be used to monitor generator electrical and drive train mechanical faults. It is validated experimentally on a wind turbine condition monitoring test rig using a three-phase, permanent-magnet, slow-speed, synchronous generator, driven by a motor controlled by a model representing the aerodynamic forces from a wind turbine. The possibility of detecting mechanical and electrical faults in wind turbines by electrical signal and particularly power analysis is heralded.

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Condition monitoring and fault diagnosis of a wind turbine synchronous generator drive train

Condition monitoring and fault diagnosis of a wind turbine synchronous generator drive train

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