柯世堂, 王同光, 梁俊, et al. Study on Wind Vibration Coefficients of Megawatt Turbine Structures[J]. 2014, 34(4): 517-522. DOI: 10.13409/j.cnki.jdpme.2014.04.038.
Study on Wind Vibration Coefficients of Megawatt Turbine Structures
The wind field caused by structural and aerodynamic coupled effects of blades and tower were not considered in the wind vibration coefficients of wind turbine towers at home and abroad.Aiming at the multi-coupled effects and multi-mode buffeting responses
the integrated finite element model consisting of the rotor and the tower of megawatt wind turbine was established.The fluctuating wind velocity time history was simulated by the modified harmony superposition method and blade element momentum theory
which considering the blade-tower interaction.Using the refined calculating method″consistent coupled method″
which could consider background component
resonant component and cross effect
the wind-induced responses of wind turbine system were calculated
the influence of rotational effect from blades
the choice of value of wind vibration coefficient and its change regularity were discussed.The research conclusions propose the scientific basis for determining wind vibration coefficients of wind turbines.