Wind energy electricity generator for low wind velocity

摘要

According to the present invention, use is made of a drag-type blade in which the blade is constituted vertically and in multiple blocks while the inside thereof is formed so as to have an overlapping region, thereby achieving an aerodynamic characteristic whereby there is a large initial torque for rotating the blade of the wind energy electricity generator from the stationary state such that the rotational moment is increased. On the outside thereof, use is made of airfoil-type blades, thereby obtaining rapid rotational acceleration with tip-speed ratio no less than 1.0 and effecting wind energy electricity generation even with a low wind velocity regardless of the wind direction, and thus the present invention is economic and can be installed at low cost unaffected by place or position and is environmentally friendly while nevertheless being able to effect highly efficient wind energy electricity generation.

主权项

1. A wind power generation device comprising a cylindrical pole that has a central axis;
a drag-type blade, the drag-type blade having a central shaft rotatable around the central axis with overlapping regions formed on the central shaft fixed in the same rotational direction with an overlap ratio of the overlapping regions is (e-e′)/d in which e′ is a diameter of the central shaft, e is a length from X axis spacing overlapped between semicircles and d is a diameter of the semicircle or the drag-type blade without a shaft rotatable around the central axis in a shape of a semicircular ring with an overlap ratio of the overlapping regions of e/d in which e is a length from X axis spacing overlapped between semicircles and d is a diameter of the semicircle; an airfoil-type blade connected to an outer peripheral surface of the drag-type blade by a support fixture, said airfoil-type blade maximizes the tip speed ratio by rotating integrally with the drag-type blade; a generation module located on an extension line of the central axis and produces electricity by receiving rotational driving force of the central axis; wherein the drag-type blade is formed in multi-stages of block units in the longitudinal direction and the airfoil-type blade is formed in a vertical standing position parallel to the central axis.