Author : Fangzhou Cheng
Publisher :
ISBN 13 : 9780355509748
Total Pages : 0 pages
Book Rating : 4.5/5 (97 download)
Book Synopsis Current-based Fault Diagnosis and Prognosis for Wind Turbine Drivetrain Gearboxes by : Fangzhou Cheng
Download or read book Current-based Fault Diagnosis and Prognosis for Wind Turbine Drivetrain Gearboxes written by Fangzhou Cheng and published by . This book was released on 2017 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this dissertation, current-based fault diagnosis methods are proposed for wind turbine drivetrain gearboxes. New signal conditioning methods are developed to extract fault features from current signals of doubly-fed induction generator (DFIG)-based wind turbines under nonstationary conditions. A deep classifier consists of stacked autoencoder and support vector machine (SVM) is proposed to improve the accuracy of fault classification results of the traditional SVM classifier. Moreover, a new fault prognosis and RUL prediction method for drivetrain gearboxes based on adaptive neuro fuzzy inference system (ANFIS) and particle filtering (PF) technique is proposed. Finally, an enhanced PF algorithm is proposed to improve the fault prognosis and RUL prediction accuracy of the ANFIS-PF method. The proposed methods have been validated by small-scale permanent magnet synchronous generator (PMSG)- and DFIG-based wind turbine drivetrain simulators in the lab and MW-scale DFIG-based wind turbines in the field.