Creaby
Justin Creaby, Aarhus N DK
Patent application number | Description | Published |
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20130033040 | METHOD AND APPARATUS FOR PROTECTING WIND TURBINES FROM DAMAGE - A wind turbine has a Lidar device to sense wind conditions upstream of the wind turbine. Signals from the wind turbine are processed to detect an extreme event. On detection the system controller takes the necessary evasive action depending on the nature and severity of the extreme condition detected. This may include a significant reduction in power generated, complete shutdown of the generator and yawing of the nacelle and rotor to reduce loading on the rotor blades. | 02-07-2013 |
20130099497 | APPARATUS AND METHOD FOR REDUCING YAW ERROR IN WIND TURBINES - A wind turbine with a rotor comprising one or more rotor blades and a hub, the hub being attached to a nacelle, a yaw system for rotating the rotor to orient it in a wind direction, and one or more line of sight detectors for detecting a component of wind velocity. The one or more detectors are mounted such that they rotate under the action of the yaw system. A control system is coupled to the one or more detectors and is arranged to compare the detected wind velocity component with a wind velocity value and control the yaw system in response to the comparison. The nacelle can be rotated under control of the control system until the yaw error is substantially zero. | 04-25-2013 |
20130106107 | WIND TURBINE HAVING A CONTROL METHOD AND CONTROLLER FOR PERFORMING PREDICTIVE CONTROL OF A WIND TURBINE GENERATOR | 05-02-2013 |
Justin Creaby, Broomfield, CO US
Patent application number | Description | Published |
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20130062880 | METHOD AND APPARATUS FOR PROTECTING WIND TURBINES FROM FATIGUE DAMAGE - A wind turbine has a Lidar device to sense wind conditions upstream of the wind turbine including wind speed, direction and turbulence. Signals from the Lidar are processed to detect an event which could give rise to low cycle fatigue loading on one or more components of the wind turbine. On detection the system controller takes the necessary evasive action depending on the nature and severity of the extreme condition detected. This may include a significant reduction in power generated through reduction in rotor speed or torque, complete shutdown of the generator and yawing of the nacelle and rotor in response to a change in wind direction. | 03-14-2013 |
20140035285 | METHOD AND APPARATUS FOR PROTECTING WIND TURBINES FROM EXTREME EVENTS - A wind turbine has a Lidar ( | 02-06-2014 |
20140070538 | METHOD AND APPARATUS FOR PROTECTING WIND TURBINES FROM EXTREME EVENTS - A wind turbine has a scanning Lidar arranged on the nacelle. The Lidar has a single scanning beam which scans about a substantially vertical axis to sense wind related data in a measurement volume a predetermined distance from the Lidar. Fast Fourier transforms of data from a plurality of points in the measurement volume are analysed to derive a peak velocity and a measure of variance. A controller receives the peak velocity and measure of variance as inputs and generates an output if the controller determines that the input data shows that the wind conditions are such that damage to the wind turbine is likely. | 03-13-2014 |
Justin Creaby, Westminster, CO US
Patent application number | Description | Published |
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20140356161 | METHOD TO INDIVIDUALLY OPTIMIZE RESPECTIVE PITCH ANGLES OF A PLURALITY OF BLADES IN A WIND TURBINE - A method to individually optimize respective pitch angles of blades in a wind turbine. The method allows supplying ( | 12-04-2014 |
20150076822 | DAMPING AN OSCILLATORY MOVEMENT OF A NACELLE OF A WIND TURBINE - A method is provided for damping an oscillatory movement of a nacelle of a wind turbine. The nacelle is attached to a tower of the wind turbine. The method involves rotating the nacelle about a yawing axis with a yawing speed, the yawing axis being aligned with a longitudinal axis of the tower, changing the yawing speed, and coordinating the yawing speed with the oscillatory movement such that a torque resulting from the change of the yawing speed damps the oscillatory movement of the nacelle of the tower. | 03-19-2015 |