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Bearing faults account for a large portion of all faults in wind turbine generators (WTGs). Current-based bearing fault diagnosis techniques have great economic benefits and are potential to be adopted by the wind energy industry. This paper models the modulation effects of bearing faults on the stator currents of a direct-drive wind turbine equipped with a permanent-magnet synchronous generator (PMSG)...
Gearbox faults constitute a significant portion of all faults and downtime in wind turbines (WTs). Current-based gearbox fault diagnosis has significant advantages over traditional vibration-based techniques in terms of cost, implementation, and reliability. This paper derives a mathematical model for a WT drive train consisting of a two-stage gearbox and a permanent magnet (PM) generator, from which...
Online fault diagnosis is an effective means to improve wind turbine reliability and performance and reduce wind turbine operating and maintenance costs. Current-based fault diagnosis techniques have received more and more attention in academia and industry due to their nonintrusive character and economic advantages. This paper presents an algorithm based on power spectral density (PSD) analysis for...
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