公开(公告)号：US20170074245A1

公开(公告)日：2017-03-16

申请号：US15125497

申请日：2015-02-23

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Erik Carl Lehnskov MIRANDA ,  Martin ATZLER ,  Shuang LI ,  Thomas SCHELL

IPC: F03D7/02

CPC classification number: F03D7/028 ,  F03D7/0224 ,  F05B2270/32 ,  F05B2270/3201 ,  Y02E10/723

Abstract: The invention relates to a method of controlling a wind turbine, the wind turbine comprising wind turbine blades attached to a rotor hub and a control system for pitching the blades relative to the rotor hub. The method comprises determining a wind speed and providing a normal pitch mode of operation to control the output power of the wind turbine, where the pitch mode of operation comprises pitch reference values in dependence of the wind speed. The output power of the turbine is controlled according to the normal pitch mode of operation as a function of the wind speed if the wind speed is lower than a first upper level wind speed threshold, and according to a modified mode of operation if the wind speed exceeds the first upper level threshold wind speed, wherein the modified mode of operation comprises decreasing the output power according to a de-rating function which is a function of time. The invention further relates to a control system for controlling a wind turbine according to the above mentioned control method.

Abstract translation: 本发明涉及一种控制风力涡轮机的方法，所述风力涡轮机包括附接到转子毂的风力涡轮机叶片和用于相对于转子毂倾斜叶片的控制系统。 该方法包括确定风速并提供正常的俯仰运行模式以控制风力涡轮机的输出功率，其中桨距运行模式包括根据风速的俯仰参考值。 如果风速低于第一上限风速阈值，则根据作为风速的函数的正常俯仰运行模式来控制涡轮机的输出功率，并且根据改变的操作模式，如果风速 超过第一上限阈值风速，其中修改的操作模式包括根据作为时间的函数的降额函数来降低输出功率。 本发明还涉及根据上述控制方法控制风力涡轮机的控制系统。