Importance

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Abstract

A vertical-axis wind turbine (VAWT), such as a Savonius-type VAWT, having one or more stages of curved blades rigidly mounted to a vertical axle and a structure rotatably mounted to the vertical axle. The structure has a deflector plate and a tail plate that orients the structure with respect to the blade-axle assembly such that the deflector plate is positioned upwind to deflect at least some of the wind away from the convex back faces of the curved blades, thereby increasing the force difference of the wind on the blades' concave front faces and convex back faces and therefore increasing the rotational force applied by the blades to the vertical axle. When connected to an electricity generator, the VAWT can generate electricity at a greater rate than analogous conventional VAWTs.

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First Claim