Research on Mechanical Flutter Detection of Wind Turbine Blades Under Pa-rameter Coupling
Due to the influence of climate,wind speed and other factors,the operating conditions of wind turbine blades will change greatly,which increases the difficulty of flutter detection.Therefore,a mechanical flutter detection method for wind turbine blades under parameter coupling is proposed.The structural model of wind turbine blade is established,the structural dynamic equation is derived,and the unsteady aerodynamic load is obtained by using the optimized parameter coupling algorithm.The structural response and vibration of the blade are obtained by feedback of the dynamic model.The unsteady aerodynamic reduction model was constructed,and the energy method was used to analyze the structural response of the blade and the time domain or frequency domain of the aerodynamic load.The energy exchange angle was calculated to determine the flutter degree of the blade and realize flutter detection.The experimental results show that the aerodynamic damping coefficient calculated by this method is accurate,the de-tection rate is high and the calculation time is short.
parameter couplingwind turbinesmechanical flutter of bladesunsteady aerodynamic loadsenergy method
NETL
NSTL
万方数据
维普
