A METHOD FOR DAMPING TOWER OSCILLATIONS, AN ACTIVE STALL CONTROLLED WIND TURBINE AND USE HEREOF

摘要

The invention relates to a method for damping tower oscillations in the tower (2) of an active stall controlled wind turbine (1). The method comprises the steps of operating two or more blades (5) of the wind turbine (1) in a stall condition, detecting if the tower (2) oscillates beyond a predefined level, and establishing different stall conditions between at least two of the blades (5). The invention further relates to an active stall controlled wind turbine (1) and use hereof.