| 摘要 |
Disclosed is an arrangement to control the yawing of a wind-turbine (WT). The turbine comprises a nacelle (NA) and a hub (HB), where the nacelle is rotatable around a first axis (FA) by an adjustable yaw-angle. The hub is connected to the nacelle and is rotatable around a rotational axis (RA), and carries at least one blade (R) which rotates around the axis due to an incoming wind (IW). The blade defines a plane (RP) which is perpendicular to the rotational axis. The turbine comprises a channel passing through the hub, the channel defining openings on both side of the hub which are located at a predefined distance to the rotor plane and rotational axis, arranged so that at least a component (HCIW) of the wind is guided through one of the openings into the channel. The channel includes a device to measure a parameter of the wind flow through the channel. The measuring device is connected with a controller which uses the measured parameter to detect a yaw-angle error (á) between the incoming wind and the rotational axis, the error being used to adjust the yaw-angle of the nacelle. |
