| 摘要 |
The invention relates to a wind turbine. The turbine includes a rotor, having an operatively vertical rotor axis, and a plurality of vanes circumferentially spaced about the rotor axis and pivotally mounted to the rotor to pivot about a pivot axis parallel to the rotor axis, each between a closed position and a fully open position. The wind turbine includes displacement means for pivotally displacing the vanes into their closed positions above a threshold rotational speed of the wind turbine. Each vane defines two opposite ends at spaced apart positions on its pivot axis and arches outwardly between the ends to define a convex inner surface. In the closed position, the vanes, in combination, define a peripheral shell. Through pivotal displacement of the vanes towards their fully open positions, their inner surfaces are exposed for receiving wind thrust for exerting torque on the rotor for rotating it. |
