抄録
In the design of wind turbines, it is necessary to confirm that it has durability in various conditions assumed to be experienced in the lifetime. Among them, the state where wind turbine stops generating electricity and stands by at extreme wind speed is one of the most severe conditions. Passive yaw control is one of methods which could reduce extreme loads in the condition. In this paper, the evaluation method of load and wind turbine behavior in passive yaw control was proposed and the effectiveness of it was verified by actual measurement data. In the method, the change rate of wind direction is introduced as new input parameter and the influence of it on the load and wind turbine behavior were studied. In addition, the load reduction effect by the passive yaw control was confirmed.
