Experiment research of basin tuned and particle damper for wind turbine tower on shaker

摘要

Based on the working principles of tuned mass damper and particle damper, an innovative double-response damper called basin tuned and particle damper is proposed to suppress the wind-induced vibrations of wind turbine towers. A series of controlled experiments have been designed to study the influence of three design parameters, including the structural frequency, the damper mass ratio and the particle number per container, on the damping effect. A swing test platform was introduced to simulate the first-order vibration of the wind turbine tower under the condition of emergency stop. The displacement response of the test platform was monitored by the laser displacement sensor. The results show that the damper can effectively increase the damping ratio of the structure under different design parameter combinations. The damper is not sensitive to the structural frequency within the range near the design frequency. The damping effect increases approximately linearly with the increase of the damper mass ratio within the displacement amplitude range of the tower top. The damping effects of 3 steel balls, 5 steel balls and 7 steel balls per container are relatively close, while the damping effect of 1 steel ball per container is better.