Patent ID: 8267654
Filing Date: 2012-09-18
Classification: F03D,F05B,Y02E

Abstract:
1. A wind turbine comprising: an electrical generator; a rotor coupled to the electrical generator, the rotor having an airfoil rotor blade, the airfoil rotor blade having a leading side and an air deflector, the air deflector being movable between an extended position in which the air deflector extends outwardly from an exterior surface of the airfoil rotor blade at a location on the leading side and a retracted position in which the air deflector does not extend outwardly from the exterior surface of the airfoil rotor blade, wherein a top surface of the air deflector, when in the retracted position, forms a portion of the exterior surface of the airfoil rotor blade, and wherein an entire top surface of the air deflector, when in the extended position, is raised away from the exterior surface of the airfoil rotor blade; and a controller configured to actively control extension and refraction of the air deflector.