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Energies 2017, 10(1), 32; doi:10.3390/en10010032

Prognosis of the Remaining Useful Life of Bearings in a Wind Turbine Gearbox

School of Energy, Power and Mechanical Engineering, North China Electric Power University, Beijing 102206, China
Key Laboratory of Condition Monitoring and Control for Power Plant Equipment of Ministry of Education, North China Electric Power University, Beijing 102206, China
Mechanical and Industrial Engineering, 3131 Seamans Center, The University of Iowa, Iowa City, IA 52242-1527, USA
Author to whom correspondence should be addressed.
Academic Editor: Frede Blaabjerg
Received: 13 September 2016 / Revised: 5 December 2016 / Accepted: 21 December 2016 / Published: 31 December 2016
(This article belongs to the Special Issue Wind Turbine 2017)
View Full-Text   |   Download PDF [4217 KB, uploaded 31 December 2016]   |  


Predicting the remaining useful life (RUL) of critical subassemblies can provide an advanced maintenance strategy for wind turbines installed in remote regions. This paper proposes a novel prognostic approach to predict the RUL of bearings in a wind turbine gearbox. An artificial neural network (NN) is used to train data-driven models and to predict short-term tendencies of feature series. By combining the predicted and training features, a polynomial curve reflecting the long-term degradation process of bearings is fitted. Through solving the intersection between the fitted curve and the pre-defined threshold, the RUL can be deduced. The presented approach is validated by an operating wind turbine with a faulty bearing in the gearbox. View Full-Text
Keywords: remaining useful life (RUL); prognostic; wind turbine; bearing in gearbox remaining useful life (RUL); prognostic; wind turbine; bearing in gearbox

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Teng, W.; Zhang, X.; Liu, Y.; Kusiak, A.; Ma, Z. Prognosis of the Remaining Useful Life of Bearings in a Wind Turbine Gearbox. Energies 2017, 10, 32.

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