Devices and methods for vibration mitigation on wind turbines
AssigneeGeneral Electric Renovables Espana, S.L.
InventorsDarren John Danielsen, Marc Canal Vila
Life of this patent
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Abstract
A vibration mitigating device for engagement with a wind turbine blade includes an air flow modifying element that is configurable between a retracted configuration and an extended configuration. A frame is attachable to and has a fixed length in a span-wise direction of the wind turbine blade. The air flow modifying element is movable along the frame between the retracted configuration and the extended configuration. In the retracted configuration, the modifying element extends between the blade tip and the blade root with a first spanwise length, and in the extended configuration the modifying element extends between the blade tip and the blade root with a second, greater spanwise length.
Claims16
A vibration mitigating device for mitigating vibrations of a parked wind turbine, the vibration mitigating device configured for engagement with a wind turbine blade, comprising:
- one or more air flow modifying elements that are configurable between a retracted configuration and an extended configuration;
- a frame attachable to and having a fixed length in a span-wise direction of the wind turbine blade;
- the air flow modifying elements movable along the frame between the retracted configuration and the extended configuration;
- and
- wherein in the retracted configuration the modifying elements extend between a blade tip and a blade root of the blade with a first spanwise length, and in the extended configuration the modifying elements extend between the tip end and the root end of the blade with a second, greater spanwise length.
A method for mitigating vibrations of a parked wind turbine, the method comprising:
- arranging a vibration mitigating device on a blade of the wind turbine, the vibration mitigating device having one or more air flow modifying elements in a first configuration;
- changing the air flow modifying elements from the first configuration to a second configuration;
- wherein the first configuration is one of a retracted configuration or an extended configuration, and the second configuration is the other of the extended configuration or the retracted configuration;
- wherein the vibration mitigation device includes a frame attachable to and having a fixed length in a span-wise direction of the wind turbine blade;
- the air flow modifying elements are moved along the frame between the retracted configuration and the extended configuration;
- and
- wherein in the retracted configuration the modifying elements extend between a blade tip and a blade root of the blade with a first spanwise length, and in the extended configuration the modifying elements extend between the tip end and the root end of the blade with a second, greater spanwise length.
Dependencies are inferred from the claim text.