Active Control for In-plane Vibration Suppression of Wind Turbine Blades
To solve the problem of blade vibration in wind power generation systems,an active control method for suppressing blade in-plane vibration was proposed.Firstly,the blade was equated to a cantilever beam of uniform cross-section,and its deflection expressions in the cases of free vibration and forced vibration were solved based on the relevant theory of material mechanics.And then the vibration moment in the rotating plane was calculated according to the deflection expressions,and the moment transmission model from the blade end to the motor end was established.Finally,the moment for vibration damping was modulated at the motor end.The simulation results confirm that the proposed method can effectively reduce the displacement at the blade tip,and the vibration suppression rate can be above 70%.The experimental results show that the fluctuation amplitude of the motor torque is significantly reduced,and this method can greatly reduce the faults caused by the blade vibration of the wind power system.
vibration and wavewind powerblademoment transfer modelsuppression
万方数据
维普
