Wind Turbine Condition Monitoring for Rotor Faults using MCSA

Condition monitoring method is suggested in this paper using Machine Current Signal Analysis (MCSA) for analyzing Rotor eccentricity fault in Wind Turbine Generator (WTG). The suggested method measures the current characteristic frequencies generated by the WTG. Extraction and investigation of the excitations that are generated by WTG eccentricity fault are carried under, full load, no load and varying conditions of wind on a designed and developed test rig. FFT approach is used to calculate the side-band and wavelet-based analysis is further used to examine fault frequencies. Mean power at different resolution levels has been used to measure the fault magnitude. Experimentally, it has been demonstrated that for variable wind conditions MCSA lets suitable discrimination of faulty and healthy situations that lead to an effective method of diagnosis for condition monitoring (CM) of wind turbine (WT).