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US 5,584,655 AGranted
Rotor device and control for wind turbine
AssigneeThe Wind Turbine Company
InventorKenneth J. Deering
Life of this patent
Estimating the term…
Abstract
A wine turbine with blades having a high lift-to-drag ratio is provided. A hydraulic or other control system is used to control cone angle, such as in response to flap moment. Pitch of blades is controlled, such as in relation to the blade flap angle. Teeter motion is controlled preferably as a function of teeter angular velocity.
Claims14
In a wind turbine having a plurality of blades each having a longitudinal axis, the blades being rotatable about an axis of rotation, so as to be inclined to said axis of rotation, defining a cone angle for each blade, apparatus comprising:
- at least a first actuator coupled to at least a first of said blades so as to controllably change said cone angle of at least said first blade;
- a sensor which senses at least a first operating parameter of said wind turbine;
- wherein said first actuator controls changes of said cone angle of at least said first blade in response to the value of said first operating parameter sensed by said sensor.
Dependencies are inferred from the claim text.