摘要:
A method 100 for reducing noise of a wind turbine 10 includes monitoring 102, via one or more sensors 57,58, a wind speed at the wind turbine. The method 100 also includes determining 104, via a turbine controller 26, a nominal wind direction for producing rated power of the wind turbine. Further, the method 100 includes determining 106 a pitch angle of at least one rotor blade of the wind turbine 10. As such, the method 100 includes determining 108 a yaw offset for a nacelle 16 of the wind turbine 10 based on the wind speed and/or the pitch angle. Thus, the method 100 further includes changing 112 a yaw angle of the nacelle 16 by the yaw offset when the wind speed exceeds a predetermined threshold so as to reduce noise of the wind turbine 10.
摘要:
A method for operating a horizontal axis wind turbine (10) is provided, the wind turbine including: a rotor (18) including a rotor blade (22), wherein the rotor is rotatably coupled to a nacelle (16), and the rotor is rotatable about a horizontal rotor axis (30) extending through the nacelle (16), and the nacelle is rotatably coupled to a tower, the nacelle rotatable in a yaw plane (200) about a yaw axis (38). The method includes determining a wind direction (28); determining a yaw angle setting (210), wherein the yaw angle setting deviates from an alignment of the rotor axis and the wind direction in the yaw plane; yawing the nacelle to the yaw angle setting; and operating the wind turbine for example to generate electricity.
摘要:
It is an object to make it possible to completely or partially eliminate a yaw driving device and to reduce power consumption in a nacelle. A moment around a wind-turbine tower axis is calculated; an angle command value around the wind-turbine tower axis is calculated by adding a yaw-control command value to a reference command value for canceling out the moment; and a pitch angle command value of each wind turbine blade is set on the basis of the angle command value around the wind-turbine tower axis.
摘要:
The invention relates to a method to control the operation of a wind energy installation. Different wind speeds of the wind in front of the wind energy installation are measured in a given predetermined measurement volume. Data are gathered, which reflect the measured wind speeds. The data are used to generate a three-dimensional wind speed model. The three-dimensional wind speed model is used to predict a wind speed change at the wind energy installation in reference to a predetermined point of time. A control command is generated based on the predicted wind speed change and based on an actual wind speed, which is measured at the wind energy installation. The control command is used to control the operation of the wind energy installation.
摘要:
A method is provided for warning a wind turbine generator (WTG) (100) in a wind park (200, 400, 1300) of an extreme wind event. According to one embodiment of the method, one or more WTGs are adaptively selected to operate as front line WTGs. The one or more front line WTGs detect extreme wind events and provide a warning (230) to other WTGs. The selection of front line WTGs is adaptive to changing wind conditions. In another embodiment, a wind park (200, 400, 1300) includes a group of one or more WTGs of a first type (220) located in an inner region of the wind park and a plurality of WTGs of a second type (210) located in an outer region of the wind park that at least partially surrounds the inner region. The first type of WTG (220) is structurally weaker and/or rated for higher performance than the second type of WTG (210).
摘要:
The invention relates to a method of controlling a nacelle yaw system of a wind turbine within a wind farm having a plurality of wind turbines, the method comprising: determining a relative wind direction signal associated with the wind turbine, determining an absolute wind direction signal associated with the plurality of wind turbines in the wind farm, determining an estimated nacelle yaw position signal based on the absolute wind direction signal and the relative wind direction signal, and using the estimated nacelle yaw position signal to control the nacelle yaw system.
摘要:
The invention relates to wind energy system and a method of controlling thereof. A method for controlling a wind energy system (100) is provided wherein the method comprises determining the effective wind speed taking into account the load on the rotor blades of said wind energy system exerted by the wind is provided. Further, a wind energy system (100) having a calculation unit (330) adapted for calculating the effective wind speed by taking into account the load on the rotor blades of said wind energy system exerted by the wind is provided and data from a speed sensor (320). Further, a wind speed sensor free wind energy system having a generator for generating electric energy, a pitch drive control (310) and a controller (300) for shutting down and/or starting the electric energy generation in dependence of the wind speed is provided.
摘要:
The invention relates to a device for changing the angle of inclination (13) in wind turbines, which device is formed by a connection part (4) having a peripheral rolling ring (10) on which three support points (11), which support a bed (6) where the power train is supported, roll, thereby permitting the orientation of the yaw angle. At least one line of pistons (14) and their corresponding cylinders (15) are provided on each of the rolling support points (11), anchored to the bed (6) via a plate (16) for each group of actuators, thereby integrating the yaw and tilt actuation system. When the cylinder (15) pushes or retracts the piston (14) and the piston (14) extends or retracts the ringshaped connection part (4) (the fixed part), and the bed (6) that supports the power train (the mobile part) displacing a certain angle ±, the piston (14), which is articulated (17) in the lower end thereof, progressively inclines in proportion to the angle of inclination ±. The degree of inclination reached, for a leeward wind turbine, is based on the measurements of respective anemometers (5) established in the front portion of the nacelle (3).
摘要:
A system 100 for controlling a wind turbine 10 may include at least one sensor 80,82 configured to provide at least one of a wind speed signal or a wind direction signal and a turbine controller 26 configured to control the operation of the wind turbine 10. The system 100 may also include a secondary controller 106 inserted between the sensor(s) 80,82 and the turbine controller 26. The secondary controller 106 may be separated from the turbine controller 26 by a distance and may be configured to receive the wind speed signal and/or the wind direction signal from the sensor(s) 80, 82 over a communication interface. In addition, the secondary controller 106 may be configured to adjust the wind speed signal and/or wind direction signal based at least in part on a signal bias value(s) to an adjusted signal(s) and to provide the adjusted signal(s) to the turbine controller 26.