Apparatus and method for controlling yaw of a wind turbine
A wind turbine and yaw technology, applied in the direction of wind turbines, wind generator components, wind turbines at right angles to the wind direction, etc., can solve the problems affecting the difference of environmental flow conditions, affecting the acceleration characteristics of the nacelle, etc., and achieve simple and simple structure method, effect of precise method
Inactive Publication Date: 2015-08-05
SIEMENS AG
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Problems solved by technology
This arises, for example, from differences in the nacelle equipment, which may affect the acceleration characteristics on the nacelle, and may affect differences in the ambient flow conditions
[0019] Often, differences in cabin equipment can occur due to aviation warning lights
Method used
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[0072] figure 1 The relationship between the direction IW of the incoming wind and the direction of the horizontal component HCIW of the incoming wind is schematically shown in a top view with respect to the yaw angle error α of a wind turbine WT comprising a nacelle NA, a hub HB and a rotor with blades R. The nacelle NA is rotatable about a so-called first axis FA, which is the vertical axis of the tower T, by a certain yaw angle. The rotating blades of the rotor define a rotor plane RP.
[0073] If a yaw angle error α occurs, the incoming wind IW is not parallel to the axis of rotation RA of the rotor R. This leads to a loss of output power and to higher wind loads acting on wind turbine components.
[0074] The yaw angle error α is reduced by turning the axis of rotation RA relative to the direction of the incoming wind IW.
[0075] figure 2 shows a wind turbine WT according to the invention when the yaw angle error is a minimum value "0", ref. figure 1 , which means...
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The present invention relates to an arrangement and a method to control the yawing of a wind turbine. The wind-turbine shows a nacelle and a hub. The nacelle is mounted rotatable around a first axis by an adjustable yaw-angle. The hub is connected with the nacelle and the hub is mounted rotatable around a rotational axis. The rotational axis is inclined by a certain angle to the first axis. The hub carries at least one blade, which rotates around the rotational axis due to an incoming wind. The rotating blade defines a rotor-plane, which is perpendicular to the rotational-axis. The wind-turbine comprises a channel with at least one opening, while the opening is located at a predefined distance to the rotor-plane. The opening is arranged in a way, that at least one component of the incoming wind is guided through the opening and into the channel as an air-flow. The channel comprises a measuring-device, which is arranged to measure the air-flow through the channel. The measuring-device is connected with a controller, which is arranged to use the measured air-flow to detect an yaw-angle-error between the direction of the incoming wind and the rotational axis, while the yaw-angle-error is used to adjust the yaw-angle of the nacelle.
Description
technical field [0001] The present invention relates to apparatus and methods for controlling the yaw of a wind turbine. Background technique [0002] The yaw process is used in wind turbines to allow the nacelle and its rotating blades to turn a certain yaw angle for the best wind direction relative to the blades. The blades rotate about a horizontal axis of rotation which is perpendicular to the plane of rotation defined by the rotating blades. [0003] The so-called "yaw angle error" is the angle between the horizontal axis of rotation and the actual wind direction. [0004] In order to obtain maximum capacity of a wind turbine, the axis of rotation of the blades should be parallel to the wind direction. In this case, when the axis is parallel to the wind direction, the yaw angle error has a value of 0°. [0005] The axis of rotation of the rotating blades also has a vertical inclination angle, which serves to prevent the rotating blades from contacting the tower at hi...
Claims
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IPC IPC(8): G06F9/00F03D3/00F03D3/04F03D7/06
CPCY02E10/723Y02E10/722F05B2270/32F03D11/00F05B2270/321F05B2270/324F03D7/0204F05B2270/329F03D80/00F03D80/40Y02E10/72
Inventor H·斯蒂达尔
Owner SIEMENS AG