| 20110042962 | VERTICAL SHAFT TYPE DARIUS WINDMILL - The present invention relates to a Darrieus windmill, and more specifically, to a vertical axis type Darrieus windmill that enables self-start in the low wind velocity range. The Darrieus windmill, in which a primary vertical shaft is rotated by the lift forces generated by primary blades, has a starting means for assisting the starting or rotation of the primary shaft at a low wind velocity. The present invention provides advantages of enabling self-start and rotation due to the lift generated by the blade in low wind velocity conditions and enabling the generation of rotating moments in any wind direction or wind velocity, thereby easily starting even in urban areas with very low wind velocities or large variations in wind direction, and thus enabling the generation of electricity over a wide range of wind velocities. | 02-24-2011 |
