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WO/2021/254153A1 |
A load reduction control method for a wind turbine generator, the load reduction control method comprising: determining a representative blade root load value of a wind turbine generator (10); determining an additional variable pitch rat...
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WO/2021/254579A1 |
A method of activating an ice removal system of a wind turbine comprises: monitoring the output power of the wind turbine; monitoring an output from an ice sensor provided on the wind turbine indicative of an atmospheric icing condition;...
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WO/2021/254576A1 |
A method of yawing a nacelle in a wind turbine having a yawing assembly comprising a drive-ring and a plurality of drives configured to exert a torque during movement along the drive-ring and thereby move the nacelle relative to the towe...
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WO/2021/249822A1 |
It is described a method of operating at least one adaptable airflow regulating system (13) of at least one rotor blade (15) of a wind turbine (1) connected to a utility grid (6), the method comprising: receiving information (10) regardi...
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WO/2021/249602A1 |
Aspects of the present invention relate to a computer-implemented method (100) for predicting energy production losses associated with high wind hysteresis control of a wind turbine generator. The method comprises: determining (102) a di...
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WO/2021/249567A1 |
A wind direction forecast-based yaw control method and device. The yaw control method establishes an ARIMA-KF forecast model used for forecasting wind direction and a limited control set-based MPC control model, and then reduces a yaw er...
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WO/2021/249604A1 |
The present invention relates to a multirotor wind turbine comprising at least two rotor nacelle assemblies mounted to a support arrangement via respective yawing systems, and a toe angle control system for controlling the toe angles of ...
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WO/2021/249773A1 |
It is described a method (30) of controlling at least one adaptable airflow regulating system (13), in particular spoiler (19a-19f) and/or flap (23), of at least one rotor blade (15) of a wind turbine (1) having a wind turbine tower (3),...
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WO/2021/244871A1 |
It is described a device and a method of controlling blade instabilities of a wind turbine (1). The wind turbine (1) comprises a rotor (4) having a plurality of rotor blades (6), the rotor (4) being mounted to a nacelle (3) to rotate abo...
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WO/2021/244909A1 |
A controller for a wind turbine comprising a rotor and a na¬ celle arranged on a tower is described, the tower having a fundamental frequency close to or below a rated rotational frequency of the rotor. The controller comprises a rotor ...
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WO/2021/244962A1 |
It is described a device and a method of controlling an operation of a wind turbine (1). The wind turbine (1) comprises a rotor (4) having a plurality of rotor blades (6), the rotor (4) being mounted to a nacelle (3) to rotate about a ro...
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WO/2021/239195A1 |
Power production forecast based wind turbine control A method is provided for determining a power production capacity of at least one wind turbine (10) connected to a power grid. The method includes receiving, e.g. from a power grid cont...
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WO/2021/233344A1 |
A cooling control method and system for a wind-driven generator, a device, and a storage medium. A cooling device at least partially uses the electric energy outputted by the wind-driven generator to cool the wind-driven generator. The c...
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WO/2021/233706A1 |
The invention relates to a method (200) for controlling a wind power plant (100) having a rotor with at least one rotor blade (17), the method comprising: measuring (210) a strain of the at least one rotor blade; changing (220) a pitch a...
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WO/2021/234227A1 |
According to an example aspect of the present invention, there is provided a sensor (1) comprising at least one strut (2) configured to be coupled to a surface (9) of an object (3) at a first end (4) of the strut (2), a structure (5) con...
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WO/2021/233710A1 |
It is described a wind turbine (1) comprising a blade (6). The blade (6) comprises a blade body (9); an active member (10) mounted to the blade body (9) and configured to move between a retracted position and an extended position to chan...
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WO/2021/228337A1 |
A wind turbine (10) includes a nacelle (14) mounted to move on a tower (12) for providing electrical power to an electric grid (104) and a yaw system that includes one or more yaw motors (46) operable to provide a yaw function for the wi...
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WO/2021/228561A1 |
The invention describes a control arrangement (2) for a variable-speed wind turbine (3), comprising a loading analysis module (10) configured to analyse a number of environment values (10_1, …, 10_n) to establish whether the momentary ...
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WO/2021/223823A1 |
The present invention relates to blade monitoring of a wind turbine by actively promoting blade vibrations by imposing a pitch actuation signal. A method of operating a wind turbine is disclosed where for each blade of a wind turbine, vi...
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WO/2021/224532A1 |
Model-based predictive control method (MPC) for the reduction of structural load in wind turbines, comprising: exclusively proposing a single linear internal model for the MPC for the entire operating range of the turbine; obtaining the ...
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WO/2021/224488A1 |
The present invention relates in one aspect to a hydraulic pitch drive system for controlling a blade pitch angle of a blade on a rotor of a wind turbine. The pitch drive system comprises a hydraulic cylinder with a piston-side A and a r...
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WO/2021/224067A1 |
The invention relates to a lift modifying device (20) for a rotor blade (10) of a wind turbine, the lifting modifying device (20) comprising at least one fluid jet module (21) and at least one compressed fluid source (22), wherein the at...
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WO/2021/219175A1 |
Systems, methods, and computer program products for monitoring a wind turbine (10). The system receives a signal (426) indicative of a pitch force being applied to a blade (20) of a wind turbine (10). The signal (426) is sampled to gener...
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WO/2021/222508A1 |
A wind turbine having a tower having a top end and a bottom end; a first eccentric mechanism connected to a turbine rotor, the turbine rotor at the top end of the tower; a second eccentric mechanism connected to an electric generator, th...
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WO/2021/221568A1 |
Described herein is a wind-powered generator system. The wind-powered generator system includes a wind-rotatable member configured to rotate about a rotational axis substantially perpendicular to a wind direction; a power-generator confi...
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WO/2021/213602A1 |
The invention relates to a method for controlling a wind turbine system, more particular for a controlled sliding strategy to lower loads on the yaw system by controlling mechanical brakes and motor brakes in the yaw drive actuators. 5 W...
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WO/2021/216133A1 |
Horizontal axis wind turbines are provided that have a rotor including a hub having at least one blade extending therefrom. A first rotatable member is coupled to the rotor and configured to rotate in relation to wind-induced rotation of...
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WO/2021/213853A1 |
The invention describes a control arrangement (10, 11, 12) of a wind turbine (1), which control arrangement (10) comprises a watchdog (11) comprising a reset module and a trigger module, wherein the watchdog reset module is configured to...
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WO/2021/209112A1 |
The invention relates to a method for controlling a yaw offset of a plurality of wind turbines. The method uses a decision function which generates an activation parameter for determining if the yaw offset control of a specific wind turb...
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WO/2021/209330A1 |
Control method and device of a wind park It is described a method of controlling a plurality of wind turbines (3a, 3b, 3c) of a wind park (1). The method comprises: determining an axial induction zone (48) of at least a wind turbine (3a,...
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WO/2021/209110A1 |
A method for controlling a yaw system (1) of a wind turbine is disclosed. The yaw system (1) comprises a toothed yaw ring (2) connected to one of a tower (8) or a nacelle (7) and an active yaw mechanism comprising at least one yaw drive ...
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WO/2021/203612A1 |
A method and a system for controlling the rotational speed resonant frequency crossing of a flexible tower wind turbine. The method comprises: acquiring basic calculation data; processing acceleration ass of the left-right movement at th...
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WO/2021/205293A1 |
Supporting structure for installing wind energy collection modules comprising: · at least one shaft (11) supporting the tower (12) of the wind energy collection module (1), the main axis XX' of which is substantially vertical; · at lea...
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WO/2021/198902A1 |
A blade (100) of a wind turbine and a method of installing the blade (100) on the wind turbine is disclosed. The blade (100) may include at least one non-reconfigurable portion (102) and at least one reconfigurable portion (104) attached...
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WO/2021/197559A1 |
The invention relates to a method for controlling the yaw of a wind turbine system by controlling a plurality of yaw drive actuators. Based on a requested motor speed reference as an input signal, and a mean motor speed reference as a fe...
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WO/2021/200248A1 |
A wind flow sensing system for determining wind flow at a set of different altitudes above a terrain is provided. The wind flow sensing system comprises an input interface configured to receive a set of measurements of radial velocities ...
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WO/2021/200249A1 |
A wind flow sensing system for determining a turbulence of wind flow at a set of different altitudes above a terrain is provided. The wind flow sensing system comprises an input interface configured to receive a set of measurements of ra...
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WO/2021/197745A1 |
There is described a method of controlling operation of one or more wind turbines, the method comprising (a) receiving a parameter value which is based on at least one sensor signal, (b) determining a difference between the received para...
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WO/2021/197560A1 |
The invention relates to a method for controlling the yaw of a wind turbine system by controlling a plurality of yaw drive actuators. When the yaw drive actuators are applying the same torque to all the motors, this can lead to some moto...
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WO/2021/190888A1 |
A sensor system for a floating wind turbine (100) is described. The sensor system comprises a wind sensor (160) configured to provide a wind sensor signal indicative of a wind flow (110); and a processing unit (170) configured to receive...
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WO/2021/185594A1 |
The invention refers to a method for computer-implemented controlling of one or more wind turbines (1, 2) in a wind farm. The wind farm comprises an upstream first wind turbine (1) and a downstream second wind turbine (2), wherein at eac...
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WO/2021/185577A1 |
It is described a method of controlling a wind turbine (1060) by adjusting a blade pitch angle and at least one blade add-on of at least one wind turbine rotor blade (1063) having the blade add-on (1067), the method comprising: adjusting...
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WO/2021/185422A1 |
The invention relates to control of a wind turbine to address varying drivetrain loading. This is obtained by determining a modification signal to be set as a control signal. A signal indicative of a speed of the electrical generator a s...
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WO/2021/183120A1 |
A system and method are provided for controlling a wind farm during low wind speeds. Accordingly, the farm controller designates at least one of the plurality of wind turbines of the wind farm as a designated turbine. The designated turb...
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WO/2021/180282A1 |
The invention relates to a method for determining a wind field inflow parameter based on monitoring parameters of a wind turbine with a variable rotor area, the wind turbine comprises a rotor with one or more rotor blades which are arran...
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WO/2021/180411A1 |
It is described a wind turbine (100) comprising a tower (130), a nacelle (160) mounted at the top of the tower (130), a rotor mounted rotatable relatively to the nacelle (160) about a rotation axis (107) and comprising at least one blade...
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WO/2021/180291A1 |
A multirotor (MR) wind turbine (1) comprising a plurality of energy generating units (5) attached to a load carrying structure (3) carried by a tower via a main yaw assembly. The energy generating units (5) are attached to the load carry...
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WO/2021/180283A1 |
A method for controlling a multirotor wind turbine (1) comprising two or more energy generating units (5) is disclosed. At least one load carrying structure (3) is connected to a foundation or to a tower (2) via a yaw arrangement (4), an...
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WO/2021/177232A1 |
A control unit for controlling the power generation output of a wind power generation device provided with a windmill and a generator for generating power by means of the rotation of a rotor of the windmill. The control unit is configure...
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WO/2021/175792A1 |
It is described a method of controlling a wind turbine (1), wherein the wind turbine (1) comprises a hub (4) having at least one blade (6) with at least one an add-on member (17) which is actuated to alter aerodynamic properties of the b...
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