Wind powered electricity generator - includes turbine in channel with flared outlet in which flaring of cone is varied in accordance with wind speed

摘要

The generator includes a hollow pipe (1) mounted with its axis horizontal, on a shaft (8) held vertical by supports (9). The hollow pipe is able to rotate according to the wind direction, and houses a turbine (3) attached to an alternator (4) providing an electrical output. A sail structure (5) is situated behind the turbine and forms a large cone tapering outwards from the outlet of the turbine. The sail consists of blades supported on elastic arms. The arms of the sail bias the blades outwards, although in strong wind the blades are flexed inwards to form a less widely flared cone. The variation of the angle of the cone adjusts the turbine outlet in order to provide the optimum geometrical design according to the wind speed.