The vibration of wind turbine towers is relevant to the reliability of the wind turbine structure and the quality of power production. It produces both ultimate loads and fatigue loads threatening structural safety. This paper aims to reduce vibration in wind turbine towers using an active damper named the twin rotor damper (TRD). https://www.ealisboa.com/top-save-RE-DESIGNED-Strikketoy-oppbevaring-Prosjekt-27-Sort-100-Skinn-great-save/