A blade protection member includes an adhesive layer, an opaque flexible layer and a porous vortex-suppressing layer. The opaque flexible layer covers the adhesive layer. The porous vortex-suppressing layer covers the opaque flexible layer, is exposed, and has a porous structure for passage of airflow and absorption of airflow. The blade protection member reinforces the trailing edge of the wind turbine blade, absorbs and eliminates vortex, reduces wake turbulence strength, and reduces aerodynamic noise during operation. A wind turbine blade and a wind turbine which have the blade protection member each are further introduced.

A rotor includes a base member including a first side, a second side opposite the first side, and a central opening passing through the first side and the second side. The second side includes an outer circumferential edge having a first dimension and the central opening having an inner circumferential edge having a second dimension. A plurality of blades extend outwardly from the first side. The plurality of blades extend about the central opening. A fuse element is formed in the second side and extends along one of a radial direction and a circumferential direction. The fuse element has a length that is less than the first dimension.

A rotor includes a base member including a first side, a second side opposite the first side, and a central opening passing through the first side and the second side. The second side includes an outer circumferential edge having a first dimension and the central opening having an inner circumferential edge having a second dimension. A plurality of blades extend outwardly from the first side. The plurality of blades extend about the central opening. A fuse element is formed in the second side and extends along one of a radial direction and a circumferential direction. The fuse element has a length that is less than the first dimension.

A wind turbine comprising a tower, a nacelle, a hub, and three or more wind turbine blades is disclosed. The wind turbine further comprises blade connecting tension members, each blade connecting tension member extending between a connection point at one wind turbine blade and a connection point at a neighbouring wind turbine blade. Each blade connecting tension member comprises a tension member core, and a surface texture providing layer. arranged circumferentially with respect to the tension member core, thereby modifying a surface texture of an outer surface of the blade connecting tension member. This reduces the drag as well as the noise originating from blade connecting tension members. Furthermore a tension member is disclosed.

A blade for a rotor of a wind turbine, the blade comprising: an inboard portion; an outboard portion connected to the inboard portion, wherein the outboard portion is deflectable by a variable sweep angle in an edgewise direction of the blade; and a passive mechanism configured to adjust the sweep angle in response to an amount of flapwise moment acting on the blade, such that the magnitude of the sweep angle increases in response to an increased flapwise moment, and decreases in response to a decreased flapwise moment.

A rotor includes a base member including a first side, a second side opposite the first side, and a central opening passing through the first side and the second side. The second side includes an outer circumferential edge having a first dimension and the central opening having an inner circumferential edge having a second dimension. A plurality of blades extend outwardly from the first side. The plurality of blades extend about the central opening. A fuse element is formed in the second side and extends along one of a radial direction and a circumferential direction. The fuse element has a length that is less than the first dimension.

A method of operating a wind turbine for controlling wake wherein the wind turbine includes at least a rotor blade and a plurality of aerodynamic devices for influencing the airflow flowing on the rotor blade, the aerodynamic device being movable between at least a respective first configuration and a second respective configuration, the method including the step of moving the aerodynamic device between the first configuration and the second configuration for influencing a wake generated by the wind turbine.

A turbine blade for a wind turbine, the turbine blade has a blowing and suction provision in form of a plurality of arrays of blowing and suction holes defined on a curved suction surface of the turbine blade. An apparatus for turbine blade testing includes the turbine blade. The apparatus also includes a wind tunnel, a blowing source, and a suction source. The wind tunnel includes a wind channel having first and second end plates for mounting the turbine blade. A method of testing air flow in a turbine blade involves changing holes used for blowing and suction and determining a momentum coefficient for those various holes; and varying angle of attack with measurement of lift/drag ratio.

A turbine blade for a wind turbine, the turbine blade has a blowing and suction provision in form of a plurality of arrays of blowing and suction holes defined on a curved suction surface of the turbine blade. An apparatus for turbine blade testing includes the turbine blade. The apparatus also includes a wind tunnel, a blowing source, and a suction source. The wind tunnel includes a wind channel having first and second end plates for mounting the turbine blade. A method of testing air flow in a turbine blade involves changing holes used for blowing and suction and determining a momentum coefficient for those various holes; and varying angle of attack with measurement of lift/drag ratio.

A turbine blade for a wind turbine, the turbine blade has a blowing and suction provision in form of a plurality of arrays of blowing and suction holes defined on a curved suction surface of the turbine blade. An apparatus for turbine blade testing includes the turbine blade. The apparatus also includes a wind tunnel, a blowing source, and a suction source. The wind tunnel includes a wind channel having first and second end plates for mounting the turbine blade. A method of testing air flow in a turbine blade involves changing holes used for blowing and suction and determining a momentum coefficient for those various holes; and varying angle of attack with measurement of lift/drag ratio.