Systems and methods for pitching of rotor blades
AssigneeGeneral Electric Company
InventorsBhavesh Kachhia, Savio Sebastian Kathayanatt, Krishna Prashanth Anandan, Vamshidhar Done
Life of this patent
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Abstract
A wind turbine includes a hub rotatable about an axis and a blade coupled to the hub. The blade includes an inner blade portion having a first end and a second end. The inner blade portion is coupled to the hub at the first end and extends radially outward from the hub to the second end. The blade further includes an outer blade portion having a first end and a second end. The first end of the outer blade portion is pivotably coupled to the second end of the inner blade portion.
Claims19
A wind turbine comprising:
- a hub rotatable about a hub axis;
- a blade coupled to said hub and defining a longitudinal axis, said blade comprising:
- an inner blade portion comprising a first end and a second end, said inner blade portion coupled to said hub at said first end and extending radially outward from said hub to said second end;
- and
- an outer blade portion comprising a first end and a second end, said first end of said outer blade portion pivotably coupled to said second end of said inner blade portion;
- and
- a cable coupled to said inner blade portion at a first end of said cable and coupled to said outer blade portion at a second end of said cable, said cable extending within said inner blade portion and tensioned to provide an axial load on said outer blade portion.
A blade for use in a wind turbine system comprising:
- an inner blade portion comprising a first end and a second end;
- an outer blade portion comprising a first end and a second end, said first end of said outer blade portion coupled to said second end of said inner blade portion;
- a rotatable element extending between said inner blade portion and said outer blade portion, said rotatable element comprising a first end coupled to said inner blade portion and a second end coupled to said outer blade portion, wherein said rotatable element second end is rotatable relative to said rotatable element first end to facilitate rotating said outer blade portion relative to said inner blade portion;
- and
- a cable coupled to said inner blade portion at a first end of said cable and coupled to said outer blade portion at a second end of said cable, said cable extending within said inner blade portion and tensioned to provide an axial load on said outer blade portion.
Dependencies are inferred from the claim text.