Patent ID: 8506247
Filing Date: 2013-08-13
Classification: F03D,F05B,Y02E

Abstract:
1. A wind-turbine, comprising: a nacelle, the nacelle being mounted rotatable around a first axis by an adjustable yaw angle; a hub, the hub being connected to the nacelle and mounted rotatable around a rotational axis, wherein the hub comprises a blade rotating around the rotational axis due to an incoming wind, the rotating blade defining a rotor plane which is perpendicular to the rotational axis; a channel passing through the hub, the channel comprising an opening, the opening being located at a predefined distance to the rotor plane and being arranged such that at least one component of the incoming wind is guided through the opening and into the channel as an air flow; a measuring device arranged in the channel for measuring a parameter of the air flow while the air flow passes through the channel; a controller connected to the measuring device, the controller using the measured parameter of the air flow to detect a yaw angle error between a direction of the incoming wind and the rotational axis, wherein the yaw angle error is used to adjust the yaw angle of the nacelle.