Optimization study of tuned mass damper based on 15MW monopile wind turbine
Author:
Affiliation:
1.School of Naval Architecture and Ocean Engineering,Jiangsu University of Science and Technology;2.School of Naval Architecture and Ocean Engineering, Jiangsu University of Science andTechnology
Passively tuned mass dampers (TMDs) effectively dampen the vibrations of the fan. However, most of the literature only focuses on the damping effect of TMD, and does not consider the influence of wind and wave load on the damping effect of TMD. In this study, the quality and stiffness of the TMD were designed and optimized. It is found that when the wind speed increases from 12 m/s to 24 m/s, the power spectral density increases by more than 100% at the natural frequency of the tower (frequency is 0.22), and the TMD shows a good vibration damping effect when facing the challenge of high wind speed. Especially when the wind speed reaches 24m/s, the vibration damping performance of TMD is the most significant, reducing the amplitude of the tower top displacement by 59.5%. However, when the wind speed is at a medium to low level, the damping effect of TMD does not show a significant improvement. This study can provide a reference for the optimal design of TMD in wind and wave environment. By optimizing TMD for high wind speed conditions, the stable operation of the wind turbine can be more effectively ensured and the potential risk caused by vibration can be reduced.