| 摘要 |
A wind turbine comprising a plurality of feathering blades, where each blade includes a shape having a leading and a trailing edge, and the blade has a centre of pressure that is displaced from the blade pitch axis in the direction of the trailing edge of the blade so that wind force on the blade urges feathering of the blade, a governor for controlling the pitch angle of the blades according to the speed of rotation of the turbine, and an elastic linkage between the governor and the blades, the linkage urging the blades toward the pitch position set by the governor, allowing pitching of the blades toward a more feathered position than a position set by the governor against an elastic return force, and not allowing substantial pitching of the blades to a less feathered position than the position set by the governor; such that the governor sets the minimum pitch angle of the blades, but the blades can react immediately to additional wind pressure by self feathering against the urging of the elastic linkage.
|
