| 摘要 |
Wind turbine blade ( 10 ) including adjustable lift-regulating means ( 12, 13, 15, 17, 19, 21 ) arranged on or at the surface of the wind turbine blade ( 10 ), said lift-regulating means being provided with activating means by means of which they can be adjusted and thus alter the aerodynamic properties of the blade ( 10 ). The lift-regulating means ( 12, 13, 15, 17, 19, 21 ) and the activating means are adapted and arranged such that by activation of the activating means, the lift can be reduced in a zone extending in the longitudinal direction of the blade ( 10 ) from a first position adjacent the blade tip ( 14 ) to a second position between the first position and the blade root ( 16 ) and this second position is variable in the longitudinal direction of the blade ( 10 ) by adjusting the activate means. The lift-regulating means are formed of at least one flexible flap ( 12, 13, 15, 17, 19, 21 ). The invention further relates to a wind turbine rotor including such wind turbine blades, to a wind turbine and to a method of controlling the wind turbine.
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