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Research on Extraction of Compound Fault Characteristics for Rolling Bearings in Wind Turbines

School of Mechanical Engineering, North China Electric Power University, Baoding 071003, China
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Entropy 2020, 22(6), 682; https://doi.org/10.3390/e22060682
Received: 25 May 2020 / Revised: 16 June 2020 / Accepted: 16 June 2020 / Published: 18 June 2020
Wind turbines work in strong background noise, and multiple faults often occur where features are mixed together and are easily misjudged. To extract composite fault of rolling bearings from wind turbines, a new hybrid approach was proposed based on multi-point optimal minimum entropy deconvolution adjusted (MOMEDA) and the 1.5-dimensional Teager kurtosis spectrum. The composite fault signal was deconvoluted using the MOMEDA method. The deconvoluted signal was analyzed by applying the 1.5-dimensional Teager kurtosis spectrum. Finally, the frequency characteristics were extracted for the bearing fault. A bearing composite fault signal with strong background noise was utilized to prove the validity of the method. Two actual cases on bearing fault detection were analyzed with wind turbines. The results show that the method is suitable for the diagnosis of wind turbine compound faults and can be applied to research on the health behavior of wind turbines. View Full-Text
Keywords: rolling bearing; fault detection; multi-point optimal minimum entropy deconvolution adjusted (MOMEDA); 1.5-dimensional Teager kurtosis spectrum; wind turbine rolling bearing; fault detection; multi-point optimal minimum entropy deconvolution adjusted (MOMEDA); 1.5-dimensional Teager kurtosis spectrum; wind turbine
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Xiang, L.; Su, H.; Li, Y. Research on Extraction of Compound Fault Characteristics for Rolling Bearings in Wind Turbines. Entropy 2020, 22, 682.

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