Patent ID: 9041239
Filing Date: 2015-05-26
Classification: F03D,F05B,Y02E

Abstract:
1. A vertical axis wind turbine, comprising: a top plate and a bottom plate in coaxial alignment along a center axis, the center axis being perpendicular to both the top and the bottom plates; a plurality of blades disposed between the top and the bottom plates in a symmetrical configuration about the center axis, each blade comprising at least one cambered airfoil, wherein a camber line at a leading edge of each airfoil is perpendicular to a normal to the center axis and the leading edge is closer to the center axis than the trailing edge; a shaft attached to the bottom plate, the shaft being in coaxial alignment with the center axis; and a generator having a stator and a rotor, the rotor being driven by the shaft, wherein the rotor and the shaft have the same angular velocity.