Ducted wind driven turbine - has pivoting vanes in convergent inlet to control turbine speed

摘要

The ducted wind turbine has an inlet with a convergent conical section, a cylindrical centre section containing the turbine, and a divergent outlet section (8). The inlet has vanes which pivot to control the speed of the turbine and limit the air pressure in the conical convergent section. The vanes are mounted on axes (9) to pivot into the wind, and a vertical fin (6) controls the direction of the duct. The duct is mounted on a roller train to allow pivoting on the ground.