Device and method for mitigating vibrations in wind turbine blades
AssigneeLm Wind Power A/S
InventorsMarc Canal Vila, Jesper Madsen
Life of this patent
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Abstract
The present disclosure relates to devices for wind turbine blades and methods for reducing vibrations in wind turbines with a rotor in standstill. A device comprises a portion configured to protrude beyond a leading edge of a wind turbine blade in a local chordwise direction. The portion configured to protrude beyond the leading edge is configured to at least partially form an air channel in front of the leading edge.
Claims14
A device (300) configured to be removably mounted to a wind turbine blade (22) having a root (210), a tip (220) and exterior surfaces extending in a generally spanwise direction from the root (210) to the tip (220) and defining a pressure side (240), a suction side (250), a leading edge (260) and a trailing edge (270);
- the device (300) being configured for mitigating vibrations of a wind turbine (10) when a rotor (18) of the wind turbine (10) is in standstill;
- the device (300) comprising a portion (310) configured to protrude beyond the leading edge (260) in a local chordwise direction;
- and
- the portion (310) configured to protrude beyond the leading edge (260) being configured to at least partially form an air channel (540) in front of the leading edge (260), the portion (310) comprising a front leading edge element (520) configured to be connected to the leading edge (260) such that the air channel (540) is formed between the front leading edge element (520) and the leading edge (260).
A method (600) for mitigating vibrations of a parked wind turbine (10) in a standstill, the wind turbine (10) comprising one or more wind turbine blades (22), the wind turbine blades (22) each having a root (210), a tip (220) and exterior surfaces defining a pressure side (240), a suction side (250), a leading edge (260) and a trailing edge (270), extending in a generally spanwise direction from the root (210) to the tip (220);
- the method comprising:
- releasably attaching (610) a device (300) to the leading edge (260) of a wind turbine blade (22), the device (300) comprising a portion (310) configured to protrude beyond the leading edge (260) in a local chordwise direction, and the portion (310) configured to protrude beyond the leading edge (260) being configured to at least partially form an air channel (540) in front of the leading edge (260), the portion (310) comprising a front leading edge element (520) configured to be connected to the leading edge (260) such that the air channel (540) is formed between the front leading edge element (520) and the leading edge (260);
- and
- detaching (620) the device (300) from the blade (22) before the wind turbine (10) starts to operate.
Dependencies are inferred from the claim text.