A effective method to attach vertical axis wind turbines to electric Vehicles, Ships, Boats and charge the Vehicles while driving for efficient and effective use because we know the direction of the wind, is to partially shield the wind turbine. The method consists of the wind turbine and a partial shield which is in front between the turbine and the wind. The partial shield can have different forms and size as long as it shields the part of the wind turbine where the blade is not facing the wind direction to reduce drag, and only allow the part of the wind turbine where the blade is open facing the wind to experience the full force of the. The method can operate inside the hood or above the hood or in front of the hood of the vehicles. That way the method will be compatible with different vehicle types.

A system and apparatus for wind energy conversion comprising a Savonius style rotor attached to a drive shaft; a first airfoil configured to block air pressure along a return side of the rotor; an airfoil cowling configured to direct blocked air on the return side of the rotor to intersect with air on the drive side of the rotor; at least one vacuum compensator configured on a top edge of the first airfoil wherein the at least one vacuum compensator redirects the blocked air on the return side of the rotor onto the driven side of the rotor; an anemometer; a wind direction indicator; and a computer system operatively connected to the roller and track assembly wherein the computer system adjusts the orientation of the rotor according to a wind speed measured by the anemometer and a wind direction measured by the wind direction indicator.

Provided is a windmill device including a wind tunnel member with a wind tunnel passage and a windmill held rotatably inside the wind tunnel passage of the wind tunnel member. The windmill includes a hub serving as a rotation center, plurality of spokes extending radially therefrom, an approximately annular limb connecting outer ends of the plurality of spokes, and plurality of sailcloth pieces, each sailcloth piece being approximately triangular in shape, one side of each sailcloth piece left as a free end 24a not supported by any of the spokes and the limb. A ratio S.sub.2/S.sub.1 is 0.9 or more. S.sub.1 is a cross-sectional area of the wind tunnel passage. S.sub.2 is a wind catching area of the plurality of sailcloth pieces.

An electrical power generating system includes a wind deflecting structure having a contour at a proximal end formed by a plurality of sail segments that in a first position define the contour, a turbine positioned in proximity to a distal end of the wind deflecting structure such that the turbine is driven by wind passing around the wind deflecting structure, and an energy converter coupled to the turbine that converts rotary motion from the turbine into electrical energy, wherein at least one of the plurality of sails is movable between the first position defining a corresponding portion of the contour of the wind deflecting structure and a second position that reduces a wind drag coefficient of the wind deflecting structure.

A vertical axis wind turbine system for charging transportation vehicles while the vehicles are in operation. The system comprising at least one vertical axis wind turbine comprising a plurality of blades and a shield located upstream of the at least one vertical axis wind turbine. The shield partially overlaps the at least one vertical axis wind turbine in a horizontal direction such that only open facing blades of the plurality of blades are exposed to a wind. The system is mounted above, inside of or in front of the transportation vehicle.