Abstract
Vibration analysis of the generator bearing of a large wind turbine using demodulation techniques is discussed in this paper. The purpose of this paper is to show how capable these techniques are for small shaft speed variations. Highest energy band was calculated by wavelet packet transform for amplitude and phase demodulation. Results from the vibration analysis were consistent with a localized outer-race bearing fault. They were then validated by cutting the bearing with water jet machine. A significant localized fault was found on the outer race.
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References
Rabe U, Janser K, Arnold Wt (1996) Vibrations of free and surface-coupled atomic force microscope cantilevers: theory and experiment. Rev Sci Instrum 67(9):3281–3293
Randall R (2012) Vibration based condition monitoring. Wiley, New York
Chui CK (1992) An introduction to wavelets. Academic Press, New York, pp 1–200
Alewine K, Chen W (2010) Wind turbine generator failure modes analysis and occurrence, Windpower 2010, Dallas, Texas, 24–26 May 2010
Acknowledgements
The authors would like to thank the TransAlta Corporation, specially Tracy Duncan, for providing the operational data and the bearings, and the Natural Sciences and Engineering Research Council (NSERC) of Canada for financial support under the Industrial Research Chair and Engage programs.
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Mollasalehi, E., Sun, Q., Wood, D. (2016). Wind Turbine Generator Bearing Fault Diagnosis Using Amplitude and Phase Demodulation Techniques for Small Speed Variations. In: Chaari, F., Zimroz, R., Bartelmus, W., Haddar, M. (eds) Advances in Condition Monitoring of Machinery in Non-Stationary Operations. CMMNO 2014. Applied Condition Monitoring, vol 4. Springer, Cham. https://doi.org/10.1007/978-3-319-20463-5_29
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DOI: https://doi.org/10.1007/978-3-319-20463-5_29
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Publisher Name: Springer, Cham
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Online ISBN: 978-3-319-20463-5
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