Abstract: A novel three-vaned, drag-type wind turbine, wherein air, when it exits a first vane, is split into two flow paths. A first path is directed to a second vane, while a second path is directed to a third vane. The air, then, impinges on a plurality of vanes wherein the momentum of the air is altered, thus providing the force needed to drive the wind turbine. In a first embodiment, a wind shield is used to deflect a portion of the wind from entering the wind turbine, this portion being in a region where the vanes are rotating into the wind. In second embodiment, the wind shield is not used.

Abstract: A novel modification of a Savonius rotor used as a wind turbine provides an exhaust channel in each vane. The vane of the modified Savonius rotor is formed into an “S” shape. The air that enters a given end of the vane exits that end through the new exhaust channel into the freestream. A plurality of modified Savonius rotors are stacked one on top of the other for self-starting and greater power output. The outer surfaces of the entire assembly may be coated with photo voltaic cell material for additional energy production. In one embodiment of the invention, a cone shaped solar collector is placed on top of the entire modified Savonius rotor assembly.