Experimental Study on the Effect of a Bifurcated Apex on the Vibration of a Wind Turbine Tower

Abstract

Aiming at the vibration problem of wind turbine towers, an improved design method of bifurcated blade tip and end wing is proposed. By testing the vibration characteristics of the tower, the related frequency and acceleration amplitude of the tower before and after the modification design is measured, and the influence of the fork tip with different tip Angles on the vibration characteristics of the tower is studied. It is concluded that the basic amplitude and the second-order amplitude of the axial and radial acceleration corresponding to the vibration of the tower can be reduced by the split tip end wing. Therefore, the split tip end wing can effectively reduce the vibration of this wind turbine tower. Since the effect of vibration reduction is related to the tip Angle of the split tip end wing, this provides a new idea for the study of wind turbine tower vibration reduction.