Abstract: A blade for a rotor of a wind turbine having a longitudinal direction with a tip end and a root end and a transverse direction, comprising: a profiled contour that when impacted by an incident airflow, generates a lift, wherein the profiled contour is divided into: a root region having a substantially circular or elliptical profile closest to the hub, an airfoil region having a lift-generating profile furthest away from the hub, and a transition region between the root region and the airfoil region, the transition region having a profile gradually changing in the radial direction to the lift-generating profile of the airfoil region, and further comprising a shoulder, wherein the shoulder is located in the airfoil region, thus yielding a slender and relative thick blade maximizing energy output, reducing bearing loads and facilitating transportation.

Abstract: A wind turbine rotor blade including a blade tip, a blade root, the root defining a z-axis of a right-handed coordinate system, a shell having a leading edge, a trailing edge, a pressure side, a suction side, and, at a longitudinal position close to the tip, an aerodynamic profile with a chord and a profile height. The chord defines a y-axis. The profile height defines an x-axis. A carrying structure including a shear web connects the pressure and suction side. The blade has a prebend towards the pressure side such that the tip is offset from the z-axis along the x-axis. The blade has a sweep towards the trailing edge such that the tip is offset from the z-axis along the direction of the y-axis. The shear web defines a plane including the z-axis or has a constant distance therefrom and is inclined relative to the x-axis.

Abstract: A wind turbine rotor blade including a blade tip, a blade root, the root defining a z-axis of a right-handed coordinate system, a shell having a leading edge, a trailing edge, a pressure side, a suction side, and, at a longitudinal position close to the tip, an aerodynamic profile with a chord and a profile height. The chord defines a y-axis. The profile height defines an x-axis. A carrying structure including a shear web connects the pressure and suction side. The blade has a prebend towards the pressure side such that the tip is offset from the z-axis along the x-axis. The blade has a sweep towards the trailing edge such that the tip is offset from the z-axis along the direction of the y-axis. The shear web defines a plane including the z-axis or has a constant distance therefrom and is inclined relative to the x-axis.

Abstract: A blade for a rotor of a wind turbine having a longitudinal direction with a tip end and a root end and a transverse direction, comprising: a profiled contour that when impacted by an incident airflow, generates a lift, wherein the profiled contour is divided into: a root region having a substantially circular or elliptical profile closest to the hub, an airfoil region having a lift-generating profile furthest away from the hub, and a transition region between the root region and the airfoil region, the transition region having a profile gradually changing in the radial direction to the lift-generating profile of the airfoil region, and further comprising a shoulder, wherein the shoulder is located in the airfoil region, thus yielding a slender and relative thick blade maximizing energy output, reducing bearing loads and facilitating transportation.

Abstract: Wind turbine blade having at least one longitudinal hollow element that defines an aerodynamic outer surface and an inner cavity having an inner surface. The blade also comprises at least one spar (1), disposed in the inner cavity and bonded to the inner surface by at least two bonding surfaces (13) located on bonding surfaces (2) of the spar (1). The spar (1) comprises, on at least one bonding zone (2), at least three fibre fabric layers (3) and at least one central core (4) and at least one lateral core (5) disposed between the at least three fibre fabric layers (3). This makes it possible to increase the resistance to shear stresses in the adhesive bond of the spar (1) to the inner surface of the longitudinal hollow element and decrease the required amount of adhesive.

Abstract: The present invention relates to a wind turbine rotor balancing method which compensates imbalances between the centers of gravity of the wind turbine blades, in both magnitude and position along said blades, so that the amount of mass needed to carry out this balancing method is minimized, while reducing the loads and vibrations associated with a position of the center of gravity of the rotor not aligned with the axis of rotation thereof, wherein the invention further relates to the wind turbine rotor balancing system and the wind turbine balanced with the above method.

Abstract: The present invention relates to a blade for a wind turbine comprising at least a longitudinal component comprising at least two longitudinal stretches with fibers at different orientations depending on the location of these stretches along the blade, where the orientation of the fibers in the stretches of the blade is adapted to the prevailing load states in each of the stretches.

Abstract: The present invention relates to a wind turbine rotor balancing method which compensates imbalances between the centres of gravity of the wind turbine blades, in both magnitude and position along said blades, so that the amount of mass needed to carry out this balancing method is minimized, while reducing the loads and vibrations associated with a position of the centre of gravity of the rotor not aligned with the axis of rotation thereof, wherein the invention further relates to the wind turbine rotor balancing system and the wind turbine balanced with the above method.

Abstract: Wind turbine blade having at least one longitudinal hollow element that defines an aerodynamic outer surface and an inner cavity having an inner surface. The blade also comprises at least one spar (1), disposed in the inner cavity and bonded to the inner surface by at least two bonding surfaces (13) located on bonding surfaces (2) of the spar (1). The spar (1) comprises, on at least one bonding zone (2), at least three fibre fabric layers (3) and at least one central core (4) and at least one lateral core (5) disposed between the at least three fibre fabric layers (3). This makes it possible to increase the resistance to shear stresses in the adhesive bond of the spar (1) to the inner surface of the longitudinal hollow element and decrease the required amount of adhesive.

Abstract: The wind turbine has a tower; a nacelle; and a hub comprising a hub connection flange for being detachably connected to a blade connection flange of a rotor blade.

Abstract: The wind turbine has a tower; a nacelle; and a hub comprising a hub connection flange for being detachably connected to a blade connection flange of a rotor blade.

Abstract: A method and system is provided for assembling or disassembling a blade of a wind turbine. The wind turbine includes a tower resting on a base, a rotor including at least one rotor blade having a blade connection flange and a nacelle mounted atop the tower, a hub rotatably connected to the nacelle and including a hub connection flange adapted to be detachably connected to a blade connection flange of a rotor blade. Thy wind turbine further includes a first positioning element adapted to be attached to the nacelle or to the tower in a top area and a second positioning element adapted to be joined to the blade in a root blade area, where the first and second positioning elements are configured to cooperate to provide an accurate position of the blade connection flange prior to connection to the hub connection flange.

Abstract: The present invention relates to a blade for a wind turbine comprising at least a longitudinal component comprising at least two longitudinal stretches with fibers at different orientations depending on the location of these stretches along the blade, where the orientation of the fibers in the stretches of the blade is adapted to the prevailing load states in each of the stretches.

Abstract: A method and system is provided for assembling or disassembling a blade of a wind turbine. The wind turbine includes a tower resting on a base, a rotor including at least one rotor blade having a blade connection flange and a nacelle mounted atop the tower, a hub rotatably connected to the nacelle and including a hub connection flange adapted to be detachably connected to a blade connection flange of a rotor blade. Thy wind turbine further includes a first positioning element adapted to be attached to the nacelle or to the tower in a top area and a second positioning element adapted to be joined to the blade in a root blade area, where the first and second positioning elements are configured to cooperate to provide an accurate position of the blade connection flange prior to connection to the hub connection flange.