Research On Fault Mechanism And Diagnostic Methods for Wind Turbine Rotor

摘要

This paper analyzes the aerodynamic and structure characteristics of rotor blades. First a aerodynamic model of normal condition based on BEM (Blade Element Momentum) has been set up. Second the mechanisms of two typical wind turbine rotor faults (aerodynamic asymmetry and skew wind) have been studied in this paper, and these two specific faults models have been set up. Finally, the faults features have been extracted from the tower torsion moment oscillation and a fault diagnosis example based on simulation results is presented.