Fault Diagnostics for Electrically Operated Pitch Systems in Offshore Wind Turbines

The Science of Making Torque from Wind

Kandukuri, Surya Teja^1 ; Huynh, Van Khang^1 ; Karimi, Hamid Reza^2 ; Robbersmyr, Kjell Gunnar^1

Department of Engineering Sciences, University of Agder, Grimstad, Norway^1

Department of Mechanical Engineering, Politecnico di Milano, Milan, Italy^2

关键词: Current signature analysis;    Current signatures;    Electrical motors;    Health assessments;    Model based approach;    Modified winding functions;    Online condition monitoring;    Realistic conditions;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/753/5/052005/pdf
DOI  :  10.1088/1742-6596/753/5/052005

来源: IOP

【 摘 要 】

This paper investigates the electrically operated pitch systems of offshore wind turbines for online condition monitoring and health assessment. The current signature based fault diagnostics is developed for electrically operated pitch systems using model-based approach. The electrical motor faults are firstly modelled based on modified winding function theory and then, current signature analysis is performed to detect the faults. Further, in order to verify the fault diagnostics capabilities in realistic conditions, the operating profiles are obtained from FAST simulation of offshore wind turbines in various wind conditions. In this way, the applicability of current signature analysis for fault diagnostics in offshore wind turbine pitch systems is demonstrated.