Wind turbine blade with damping element
AssigneeVestas Wind Systems A/S
InventorCarsten Hein Westergaard
Life of this patent
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Abstract
A blade for a wind turbine generally comprises a shell body defined by first and second shells extending between a leading edge and a trailing edge, an inner spar supporting at least a portion of the shell body, and a damping element coupled to at least one of the shell body or inner spar. The damping element is configured to move relative to the shell body to dissipate vibrations of the blade, and has a greater degree of freedom in a flapwise direction between the first and second shells than in an edgewise direction between the leading and trailing edges.
Claims18
A blade for a wind turbine, comprising:
- a shell body defined by first and second shells extending between a leading edge and a trailing edge;
- an inner spar supporting at least a portion of the shell body;
- and
- a damping element coupled to at least one of the shell body or inner spar, the damping element being configured to move relative to the shell body to dissipate vibrations of the blade, and the damping element having a greater degree of freedom in a flapwise direction between the first and second shells than in an edgewise direction between the leading and trailing edges.
A wind turbine, comprising:
- a tower;
- a nacelle supported by the tower;
- and
- a rotor including a hub rotatably coupled to the nacelle and a blade coupled to the hub, the blade comprising:
- a shell body defined by first and second shells extending between a leading edge and a trailing edge;
- an inner spar supporting at least a portion of the shell body;
- and
- a damping element coupled to at least one of the shell body or inner spar, the damping element being configured to move relative to the shell body to dissipate vibrations of the blade, and the damping element having a greater degree of freedom in a flapwise direction between the first and second shells than in an edgewise direction between the leading and trailing edges.
A damping element for a blade of a wind turbine, the blade having a shell body defined by first and second shells extending between a leading edge and a trailing edge and an inner spar supporting at least a portion of the shell body, the damping element comprising:
- a box configured to be coupled to the inner spar and move relative to the outer shell to dissipate vibrations of the blade, and the box having a greater degree of freedom in a flapwise direction between the first and second shells than in an edgewise direction between the leading and trailing edges.
Dependencies are inferred from the claim text.