公开(公告)号：EP2786017B1

公开(公告)日：2017-04-12

申请号：EP12794171.4

申请日：2012-11-21

Applicant: Vestas Wind Systems A/S

Inventor： HAMMERUM, Keld

IPC: F03D7/02 ,  F03D7/04

CPC classification number: F03D7/0264 ,  F03D7/0224 ,  F03D7/042 ,  F03D7/045 ,  F05B2270/327 ,  F05B2270/328 ,  F05B2270/331 ,  F05B2270/332 ,  F05B2270/334 ,  Y02E10/723

Abstract: A shutdown controller for a wind turbine comprises, to improve the estimation of a state of the wind turbine, at least two sensors being adapted to provide sensor data significant for different mechanical states in the wind turbine. The controller can provide an estimated state of the wind turbine based on the sensor data from the at least two sensors and compare the state of the wind turbine with a predefined detection limit to provide a shutdown signal if the estimated state is outside the detection limit.

Abstract translation: 本发明提供了一种用于风力涡轮机的关闭控制器。 为了改进对风力涡轮机的状态的估计，控制器包括至少两个传感器，其适于提供对于风力涡轮机中的不同机械状态有重要意义的传感器数据。 控制器可以基于来自至少两个传感器的传感器数据提供风力涡轮机的估计状态，并将风力涡轮机的状态与预定义的检测限进行比较，以在估计状态超出检测限度时提供关闭信号。

公开(公告)号：EP2167814B1

公开(公告)日：2015-10-21

申请号：EP08758269.8

申请日：2008-07-11

Applicant: Vestas Wind Systems A/S

Inventor： RISAGER, Lars ,  HAMMERUM, Keld

IPC: F03D7/02 ,  F03D7/04 ,  F03D11/04

CPC classification number: F03D7/042 ,  F03D7/0224 ,  F03D7/0264 ,  F03D7/0296 ,  F03D13/20 ,  F03D17/00 ,  F05B2240/912 ,  F05B2260/96 ,  Y02E10/723 ,  Y02E10/728

Abstract: A method for controlling a wind turbine rotor during a stop process by pitching the rotor blades fast, e.g. with an angular rate of 10-15°/s to a no-thrust position, after which the rotor blades are pitched to maintain the no-thrust or a thrust against the direction of the pendulum movement of the tower for a while to prevent the aerodynamic thrust from aggravating the pendulum movement of the tower. With this control strategy, the bending moments of the tower root are minimized, leading to avoidance of wind turbine tower failure, to prolongation of the life time for a wind turbine tower and the possibility of erecting wind turbine towers of less reinforcement at the tower root.