The Research And Application Of Tuned Mass Damper Technology In Wind Turbine Tower

In this paper, a1.5MW wind turbine tower drum in Inner Mongolia Bayan oboarea was taken as the research object, after finishing the basic dynamic characteristicsanalyses of tower drum, the wind speed time history curves of wind turbine under threewind conditions were obtained using the AR model of linear filtering method, the windturbine tower drum was carried on dynamic response analysis and vibration controlstudy under the wind load and seismic load, and also the influence laws of variousparameters of tuned mass damper (TMD) on the damping effect were analyzed.The results show that the first ten order vibration modes of wind turbine tower drumis mainly bending vibration modes, and the low-order frequencies of tower drum avoidthe resonance frequency that will not lead to resonance. The wind speed time historycurves based on the linear filtering method satisfy the random characteristics offluctuating wind, and the simulated spectra is in good agreement with the targetspectrum. The volatility of wind-induced response of wind turbine tower drum is thestrongest and the dynamic response peaks are the biggest under storm conditions. Underwind load the damping effect of wind turbine tower drum are closely related with themass ratio, damping ratio and frequency ratio of TMD. With the increase of TMD’smass ratio and damping ratio, the damping effect is gradually improving and finallytends to stable, and when the frequency ratio is close to1, the control rate are the best. Itis advised that under wind load the optimal mass ratio of TMD takes3%, the dampingratio takes0.07and the frequency ratio takes about1. Under seismic load the largerdynamic response of wind turbine tower drum occurs in the middle and later periodsand the change law are basically the same, and the dynamic response volatility of windturbine tower drum is the strongest under the EL Centro wave and the response peak isthe largest. The damping effect of TMD on the wind load is better than that on theseismic load. Under seismic load the influence laws of TMD’s different parameters onthe damping effect is similar to that under the wind load. It is also advised that under seismic load the mass ratio of TMD is4%, the damping ratio is0.10and the frequencyratio is close to1.