| Patent application number | Description | Published |
|---|
| 20090169378 | WIND TURBINE, WIND TURBINE CONTROLLER AND METHOD FOR CONTROLLING A WIND TURBINE - A wind turbine having at least one rotor blade attached to a rotor hub is provided, wherein the wind turbine further includes at least one sensor disposed at or near the rotor blade, the sensor being adapted to detect an aerodynamic condition of the rotor blade. | 07-02-2009 |
| 20090187282 | WIND TURBINE ARRANGED FOR INDEPENDENT OPERATION OF ITS COMPONENTS AND RELATED METHOD AND COMPUTER PROGRAM - A wind turbine which is composed of several subunits is provided. Each of the several subunits includes a controller. Each of the controllers is adapted to operate in a cooperative mode and in an isolated mode. In the cooperative mode, one of the controllers operates as a master controller and the remaining controllers operate as slave controllers. In the isolated mode, each subunit is exclusively controlled by its respective controller, wherein each of the controllers acts as an independent master controller for its subunit. Further, a method for operating a wind turbine which includes at least two subunits is provided. Each of the at least two subunits includes at least one sensor, at least one actuator and a controller. The method for operating the wind turbine is carried out independently in each subunit and includes detecting at least one sensor signal; and determining and transferring a command to at least one actuator. Further, a segmented computer program for controlling a wind turbine which includes at least two subunits is provided. | 07-23-2009 |
| 20090232635 | INDEPENDENT SENSING SYSTEM FOR WIND TURBINES - A wireless sensing device for use in a wind turbine having a sensor capable of measuring one or more parameters for wind turbine operation. The sensing device also include a transmission device capable of wirelessly transmitting one or more signals corresponding to the one or more measured parameters to a controller. An independent power source is included to power the transmission device and the sensor. A method for system for operating and monitoring wind turbine operation are also disclosed. | 09-17-2009 |
| 20100123314 | PROTECTION SYSTEM FOR WIND TURBINE - A braking system for a wind turbine is provided, and the wind turbine includes a rotor having at least one blade. A generator includes a plurality of stator windings having a plurality of phases. The braking system includes a plurality of resistors, and at least one switch connected between the stator windings and the resistors. The switch can be configured to connect the stator windings to each other via the resistors, for the effect of slowing down or stopping the rotor of the wind turbine. | 05-20-2010 |
| 20100133830 | SYSTEMS AND METHODS FOR ASSEMBLING A PITCH ASSEMBLY FOR USE IN A WIND TURBINE - A method of assembling a pitch assembly for use with a wind turbine. The wind turbine includes a rotor and a plurality of rotor blades coupled to the rotor. The method includes coupling a pitch drive system to at least one of the plurality of rotor blades for rotating the rotor blade about a pitch axis. At least one sensor is coupled in signal communication with the pitch drive system. The pitch drive system rotates the rotor blade when the sensor senses rotor overspeed. | 06-03-2010 |
| 20110140422 | METHOD FOR CONTROLLING A PROXIMITY SENSOR OF A WIND TURBINE - The present disclosure relates to a method for controlling at least one proximity sensor of a wind turbine, the wind turbine comprising a rotor shaft, the at least one proximity sensor being adapted to measure a radial displacement of the rotor shaft; the method includes: providing at least one reference value, detecting an output of the at least one proximity sensor, the output depending on a measured distance by the respective proximity sensor; comparing the detected output of the proximity sensor with at least one reference value. Further, the present relates to a control arrangement for a wind turbine, the wind turbine comprising a wind rotor shaft; wherein the control arrangement comprises at least one proximity sensor being adapted to measure a radial displacement of the rotor shaft, wherein the at least one proximity sensor is adapted to generate an output signal depending on a measured distance by the respective proximity sensor; wherein the control arrangement further comprises a control device, the control device being adapted to receive the output signal of the at least one proximity sensor, wherein the control device is adapted to compare the output signal with at least one reference value. Finally, the present disclosure relates to a wind turbine comprising a control arrangement. | 06-16-2011 |
| 20110140423 | WIND TURBINE AND METHOD FOR OPERATING A WIND TURBINE - The present disclosure relates to a method for operating a wind turbine, the wind turbine comprising a wind rotor having at least one rotor blade and a generator connected to the wind rotor, wherein the generator is adapted to be connected to a grid, wherein the method comprises: adjusting at least one wind turbine parameter to increase the rotational speed of the wind rotor; increasing the rotational speed of the wind rotor; during increasing of the rotational speed of the wind rotor determining if the wind turbine would exceed a predetermined amount of energy to be fed into the grid at the actual wind rotor rotational speed; and during increasing of the rotational speed of the wind rotor connecting the wind turbine to the grid if determining that the wind turbine would exceed the predetermined amount of energy to be fed into the grid. Further, the present disclosure relates to a wind turbine comprising a wind rotor, wherein the wind rotor is mechanically connected to a generator for transmitting the rotational power of the wind rotor having at least one rotor blade to the rotor of the generator, wherein the output current of the generator is adapted to be selectively connected to a grid by a circuit breaker, the wind turbine further comprising a control device adapted to close or to trip the circuit breaker, wherein the control device is adapted to perform the method disclosed herein. | 06-16-2011 |
| 20110142620 | APPARATUS AND METHOD FOR OPERATION OF A WIND TURBINE - A method for operating a wind turbine is provided. The wind turbine includes a rotor including at least one rotor blade and a pitch drive system coupled to the at least one rotor blade. The pitch drive system is adapted for pitching the rotor blade. The method includes: determining an actual value of a first variable indicative of an overspeed state of the wind turbine; determining an actual value of a second variable of the wind turbine correlated to the rate of change over time of the first variable; and, estimating an occurrence of an overspeed state of the wind turbine from at least the determined actual values of the first and second variables. The pitch drive system pitches the rotor blade for aerodynamically braking the rotor based on the result of the estimation. | 06-16-2011 |
| 20110142634 | OVERSPEED PROTECTION SYSTEM AND METHOD - An overspeed protection system for a wind turbine having a hub and at least one rotor blade mounted to the hub includes a rotation sensor adapted for measuring a rotor speed of said wind turbine; a comparator connected to the rotation sensor and adapted for comparing the measured rotor speed with a predetermined threshold value of the rotor speed wherein the comparator outputs a signal indicative of the comparison; and an auxiliary pitch drive controller connected to the comparator and adapted to receive the signal indicative of the comparison, the auxiliary pitch drive controller being further adapted for controlling a pitch drive unit of the wind turbine independently of a main turbine controller and, if the threshold value is exceeded, to adjust a pitch angle of the rotor blade of the wind turbine so that aerodynamic braking of the wind turbine is effected. | 06-16-2011 |
| 20110144814 | WIND TURBINE AND METHOD FOR OPERATING A WIND TURBINE - The present disclosure relates to a method for operating a wind turbine, the wind turbine comprising a wind rotor and a generator connected to the wind rotor, wherein the generator is adapted to be connected to a grid, wherein the method comprises: generating a signal for at least one of a run-up event or starting event of the wind turbine based on a predicted efficiency of at least one component of the wind turbine. Further, the present disclosure relates to a method for operating a wind turbine, the wind turbine comprising a wind rotor and a generator connected to the wind rotor, wherein the generator is adapted to be connected to a grid, wherein the method comprises: generating a signal for at least one of a run-up event or starting event of the wind turbine based on a predicted power output of the wind turbine that is based on at least one of a predicted electrical or mechanical power consumption of at least one component of the wind turbine. Finally, the present disclosure relates to a wind turbine comprising a wind rotor, wherein the wind rotor is mechanically connected to a generator for transmitting the rotational power of the wind rotor to the rotor of the generator, wherein the output current of the generator is adapted to be selectively connected to a grid by a circuit breaker, the wind turbine further comprising a control device adapted to close the circuit breaker, wherein the control device is adapted to generate a signal for at least one of a run-up event or starting event of the wind turbine based on a predicted efficiency of at least one component of the wind turbine. | 06-16-2011 |
