Blade vibration suppression system for a wind turbine and associated method

Patent metadata

Field	Value
Publication number	US-2021123415-A1
Application number	US-201916665186-A
Country	US
Kind code	A1
Filing date	Oct 28, 2019
Priority date	Oct 28, 2019
Publication date	Apr 29, 2021
Grant date	—

Abstract

The disclosed relates to a vibration suppression system and method, for a wind turbine comprising blades. The system comprises, for each blade, a stabilization system comprising a gyroscope with a control axis extending in a first direction, a first rigid body control axis extending in a second direction different from the first direction, a second rigid body control axis extending in a third direction different from the first and second directions and a flywheel rotatable in respect of the control axis and free to move in respect of at least one of the rigid body control axes. The stabilization system comprises an actuator to apply a torque over the gyroscope, and a respective sensor to detect the motions of each blade. The suppression system comprises a control device for controlling the actuation of the actuators according to said detections, in order to suppress unwanted motions of the blades.

First claim

1 . A blade vibration suppression system for a wind turbine comprising a plurality of blades,
wherein the blade vibration suppression system comprises:
at least one actively controlled gyroscopic stabilization system for each blade,
wherein the at least one actively controlled gyroscopic stabilization system includes,
a gyroscope with a rotation control axis extending in a first direction, a first rigid body control axis extending in a second direction different from the first direction, a second rigid body control axis extending in a third direction different from the first and second directions, and a flywheel rotatable in respect of the rotation control axis and free to move in respect of at least one of the first, second and third rigid body control axes,
at least one flywheel drive actuator configured to apply a torque to the gyroscope, and
at least one sensor arranged on the corresponding blade and configured to detect the motions of said blade,
wherein the blade vibration suppression system further comprises at least one control device communicated with the sensors and with the at least one flywheel drive actuator,
the control device being configured for receiving signals representative of the motion of the corresponding blade from the sensors and for controlling the actuation of the at least one flywheel drive actuators according to said received signals in order to apply at least one controlled torque over the gyroscope to generate reaction torques on said gyroscope about the required axes that oppose or counteract the detected motions of the blades.

2 . The blade vibration suppression system according to claim 1 , wherein the flywheel of the at least one gyroscopic stabilization system is free to move in respect of both rigid body control axes, said gyroscopic stabilization system comprising a first flywheel drive actuator of the at least one flywheel drive actuator configured to cause a torque over the gyroscope about the first rigid body control axis and a second flywheel drive actuator of the at least one flywheel drive actuator configured to cause a torque over the gyroscope about the second rigid body control axis,
the control device being configured for receiving signals representative of the motion of the corresponding blade from the sensor of said gyroscopic stabilization system and for controlling said first and second flywheel drive actuators to apply a torque over the corresponding gyroscope and about the corresponding axis according to the signals received from said sensor, to suppress unwanted motions of said blade.

3 . The blade vibration suppression system according to claim 2 , wherein the flywheels of all the gyroscopic stabilization systems of the blade vibration suppression system of a wind turbine are free to move in respect of both rigid body control axes.

4 . The blade vibration suppression system according to claim 1 , wherein at least one of the gyroscopic stabilization systems of the blade vibration suppression system comprises an additional flywheel drive actuator of the at least one flywheel drive actuator configured for actively controlling the rotation speed of the corresponding flywheel in respect of the rotation control axis,
the control device being further communicated with said additional flywheel drive actuator and being further configured for controlling the actuation upon the additional flywheel drive actuator according to control said rotation speed.

5 . The blade vibration suppression system according to claim 4 , wherein the gyroscopic stabilization system of the blade vibration suppression system comprising the additional flywheel drive actuator further comprises an additional sensor for detecting the rotation speed of the corresponding flywheel in respect of the rotation control axis, said additional sensor being preferably attached to a shaft of said flywheel, said shaft extending in the direction of the rotation control axis.

6 . A wind turbine comprising a plurality of blades and a blade suppression system,
wherein each blade vibration suppression system comprises at least one actively controlled gyroscopic stabilization system and at least one control device communicated with all the actively controlled gyroscopic stabilization systems of the blade vibration suppression system, wherein each gyroscopic stabilization system comprises a gyroscope with a rotation control axis extending in a first direction, a first rigid body control axis extending in a second direction different from the first direction, a second rigid body control axis extending in a third direction different from the first and second directions, and a flywheel rotatable in respect of the rotation control axis and free to move in respect of at least one of the rigid body control axes, at least one flywheel drive actuator configured to apply a torque over the gyroscope, and at least one sensor arranged on the corresponding blade and configured to detect the motions of said blade, wherein the blade vibration suppression system further comprises at least one control device communicated with the sensors and with the at least one flywheel drive actuator, the control device being configured for receiving signals representative of the motion of the corresponding blade from the sensors and for controlling the actuation of the at least one flywheel drive actuator according to said received signals in order to generate a counter torque upon the corresponding flywheel to suppress unwanted motions of the corresponding blade.

7 . The wind turbine according to claim 6 , wherein the flywheel of the at least one gyroscopic stabilization system is free to move in respect of both rigid body control axes, said gyroscopic stabilization system comprising a first flywheel drive actuator of the at least one flywheel drive actuator associated to the first rigid body control axis and a second flywheel drive actuator of the at least one flywheel drive actuator associated to the second rigid body control axis,
the control device being configured for receiving signals representative of the motion of the corresponding blade from the sensor of said gyroscopic stabilization system and for controlling said first and second flywheel drive actuators to apply a torque upon the corresponding flywheel according to the signals received from said sensor, to suppress unwanted motions of said blade.

8 . The wind turbine according to claim 7 , wherein the flywheels of all the gyroscopic stabilization systems of the blade vibration suppression system of a wind turbine are free to move in respect of both rigid body control axes.

9 . The wind turbine according to claim 6 , wherein at least one of the gyroscopic stabilization systems of the blade vibration suppression system comprises an additional flywheel drive actuator of the at least one flywheel drive actuator configured for actively controlling the rotation speed of the corresponding flywheel in respect of the rotation control axis,
the control device being further communicated with said additional flywheel drive actuator and being further configured for controlling the actuation upon the additional flywheel drive actuator in order to control said rotation speed.

10 . The wind turbine according to claim 9 , wherein at least one of the gyroscopic stabilization systems of the blade vibration suppression system comprising the additional flywheel drive actuator further comprises an additional sensor for detecting the rotation speed of the corresponding flywheel in respect of the rotation control axis, said additional sensor being preferably attached to a shaft of said flywheel, said shaft extending in the direction of the rotation control axis.

11 . The

Assignees

• Siemens Gamesa Renewable Energy As

Inventors

• Couturier Philippe

Classifications

• Y02E70/30

  Systems combining energy storage with energy generation of non-fossil origin · CPC title

• Y02E10/72

  Wind turbines with rotation axis in wind direction · CPC title

• F03D7/0296 Primary

  to prevent, counteract or reduce noise emissions · CPC title

• F03D7/042

  by means of an electrical or electronic controller · CPC title

• F03D17/00

  Monitoring or testing of wind motors, e.g. diagnostics (testing during commissioning of wind motors F03D13/30) · CPC title