| 摘要 |
The invention relates to a method and a system for monitoring an individual blade adjustment of a wind turbine which includes a tower, a rotor which is arranged on the tower and has at least two rotor blades whose blade angle can be adjusted individually, and a blade adjustment system, wherein the blade adjustment system includes a blade controller and sensors for sensing individual actual blade angles of the at least two rotor blades, wherein an individual blade controller is included which receives a collective set point blade angle from the blade controller and which actuates at least two rotor blades with respectively individual set point blade angles, as well as a corresponding wind turbine. |
| 主权项 |
1. A method for monitoring an individual blade adjustment of a wind turbine that includes
a tower, a rotor arranged on the tower having at least two rotor blades whose blade angle can be adjusted individually, a blade adjustment system that includes a blade controller and sensors for sensing individual actual blade angles θiact , of the at least two rotor blades, and an individual blade controller configured to receive a collective set point blade angle θcset from the blade controller and to actuate at least two rotor blades with individual set point blade angles θiIPC, respectively,the method comprising:
forming at least one difference signal based upon a difference between at least two different blade angle collective signals θact, θIPC, θcset; and monitoring the at least one difference signal to determine whether at least one limiting value is exceeded in absolute terms;wherein one or more of:
the at least one difference signal being monitored, the blade angle collective signals θact, θIPC,θcset on which the at least one difference signal is based, and the individual blade angle signals θiact ,θiIPC ,θisim which serve as a basis for one or more blade angle collective signals θact, θIPC,is averaged over time. |
