Abstract: The invention provides a manufacturing method of a component of a split blade of a wind turbine (such as an inboard shell or an inboard spar) having joining elements with its complementary component (i.e. an outboard shell or an outboard spar). The method comprises the following steps: a) manufacturing a joint laminate of a composite material having embedded into it the joining elements, said joint laminate being configured for becoming a part of the component; b) manufacturing the component using as a preform said joint laminate. The invention also refers to a split blade comprising components manufactured by said manufacturing method.

Abstract: Additional lightning protection system for intermediate wind turbine blade joints comprises a metal fairing that covers the blade connector elements while shielding and protecting the internal connector elements from getting hit by lightning.

Abstract: Blade insert connected in the lamination of a blade determining a double shear joint between insert and lamination. The insert is made up of two defined parts, head (2), designed to screw the insert to another structure (2?), and the body (3) that determines a cylindrical or conical shape with an internal conical cavity. In an embodiment, the insert is designed to be joined to the lamination (1) of the blade with adhesive means (4). In another embodiment, the insert is embedded in the blade lamination with an inner part (5) stuck to the body (3) of the insert.

Abstract: A blade hoisting element is an intermediate piece placed between the root of the blade and the mobile track of the blade bearing. This piece comprises at least an insert and joins, by a rigid rod or strut with another intermediate piece opposing diametrically. The piece has a hole for connecting to the hoisting point and another hole for connecting to the hub, this latter fastening to the hole of the insert by a long bolt. Two hoisting points are established on the blade, at its root and at the tip; the hoisting point at the root is handled from a single lift point on the hub and the hoisting point at the tip is handled from two lift points: one from the hub and the other from the ground.

Abstract: A method of manufacturing wind turbine blades of variable length with connection means with the rotor hub comprising steps of providing and using enlarged manufacturing moulds (41, 43, 45, 47) having a common zone (13) of a predetermined length and, at least, an adaptive zone (15) arranged with the length needed for manufacturing the blades with a desired length, particularly the length required for optimizing the annual energy production (AEP) of a predetermined wind turbine model in a predetermined site.

Abstract: A method for bonding a first and a second prefabricated parts of a wind turbine blade comprising the steps of: disposing bands (45, 55, 65) of an adhesive material in a manageable uncured state following traces (43, 53, 63) signaled on a bonding area of one of said parts, said adhesive material being able to flow in a curing stage in a controlled way, the width (W) and height (H) of said bands (45, 55, 65) and the separation (S1) between said traces (43, 53, 63) being determined so that a predetermined separation (S2) between said bands (45, 55, 65) comprised between 0-300 mm remains after the bonding; bonding both parts under predetermined conditions of pressure and temperature. The invention also refers to a wind turbine blade having prefabricated parts bonded using said method.

Abstract: Blade insert arranged inside the blade walls so that the joint between the insert and composite (1) is a double shear joint. The insert is made up of two defined parts, the head (3, 3?) and the body, which are joined together by joint elements (5) that define a double wall body (6, 6?). The joint between the insert and pultruded material (2) is made with an adhesive chemical joint (9). After making the joint, the assembly made up by the inserts and pultrusion profiles (2) is fitted into the blade walls during its manufacturing process and material curing.

Abstract: A wind turbine blade comprising at least one central spar longitudinal section and at least two shell longitudinal sections forming, respectively, the leading edge and the trailing edge of the corresponding blade section. The central spar is composed of two cap prefabricated panels and two web prefabricated panels placed side by side in a box shape. The shell longitudinal sections are placed adjacently to the central spar section and are composed of a single prefabricated panel or of two prefabricated panels. The aerodynamic profile of the blade being defined by the cap panels and the single shell panels or two shell panels.

Abstract: A wind turbine blade transversely divided in an inboard module (13) and an outboard module (33) provided on their end sections with connecting means, comprising, respectively, an inboard spar (15), an inboard upper shell (17) and an inboard lower shell (19); an outboard spar (35), an outboard upper shell (37) and an outboard lower shell (39); and arranged so that the aerodynamic profile of said inboard and outboard modules (13, 33) is defined by said upper and lower shells (17, 19; 37, 39), in which the inboard spar (15) is composed of two cap prefabricated panels (21, 23) and two web prefabricated panels (25, 27), and the outboard spar (35) is composed of first and second prefabricated panels (41, 43) integrating its caps (45, 47) and webs (49, 51). The invention also refers to a method of fabricating said wind turbine blade.

Abstract: Lightning rod system for wind turbine blades formed by various connections set up on carbon fiber laminates (2) on the blade (1), equipotentializing the surface of the flanges (4) of the beam (10) through the deviations of a primary cable (6) with the respective auxiliary cables (5), carried out with the use of a device (12) whose terminals are connected between the ends of the cited auxiliary cable (5). The use, given the elevated inductance of device (12) mounted on the connection between the carbon laminates (2) and the conductor cable or primary cable (6), is to reduce the passage of current across the carbon laminate and favor the conduction through the metal cable.

Abstract: The electronic module (7) for the light beacon on the blade tip is integrated into a lighting system consisting of a power supply (3) located in the rotor (2), a fiber optic transmission system (4) that extends along the length of the blade (1), a converter (5) and a light emitting module (6). The electronic module comprises a power circuit and a control circuit, located at the blade tip (1) and encapsulated for protection against lightning strikes. The operating method of the electronic module (7) selects the blade (1) lighting during the ON interval corresponding to the 120° of the top rotation area, and keeps it switched off and receiving energy during the OFF interval corresponding to the bottom rotation area.

Abstract: Wind turbine blade (11) with a flashing beacon on its tip which is connected to the wind turbine rotor hub (13) where this beacon includes a lighting module (21) in the tip area of the blade (11) which is supplied by a device that includes a light emitter (23) situated in the hub (13) or in the root area of the blade (11), a light to electrical energy converter (27) connected directly to this lighting module (21) and a conductor (25) of light but not electrical energy from this light emitter (23) to this converter (27).

Abstract: Additional lightning protection system for intermediate wind turbine blade joints comprises a metal fairing that covers the blade connector elements while shielding and protecting the internal connector elements from getting hit by lightning.

Abstract: Blade insert arranged inside the blade walls so that the joint between the insert and composite (1) is a double shear joint. The insert is made up of two defined parts, the head (3, 3?) and the body, which are joined together by joint elements (5) that define a double wall body (6, 6?). The joint between the insert and pultruded material (2) is made with an adhesive chemical joint (9). After making the joint, the assembly made up by the inserts and pultrusion profiles (2) is fitted into the blade walls during its manufacturing process and material curing.

Abstract: Blade insert connected in the lamination of a blade determining a double shear joint between insert and lamination. The insert is made up of two defined parts, head (2), designed to screw the insert to another structure (2?), and the body (3) that determines a cylindrical or conical shape with an internal conical cavity. In an embodiment, the insert is designed to be joined to the lamination (1) of the blade with adhesive means (4). In another embodiment, the insert is embedded in the blade lamination with an inner part (5) stuck to the body (3) of the insert.

Abstract: Wind turbine blade (11) with a flashing beacon on its tip which is connected to the wind turbine rotor hub (13) where this beacon includes a lighting module (21) in the tip area of the blade (11) which is supplied by a device that includes a light emitter (23) situated in the hub (13) or in the root area of the blade (11), a light to electrical energy converter (27) connected directly to this lighting module (21) and a conductor (25) of light but not electrical energy from this light emitter (23) to this converter (27).

Abstract: Wind turbine blade subdivided transversely into two or more sections made up of a number of sensors, preferably load cells and ultrasound sensors, assembled into the mechanical joining elements between blade sections and characterised in that their measurements allow the loads to be reduced and the forces to be controlled during the entire life of the blade. They also allow damages to be detected (stopping the machine if necessary) and an optimised design for real loads.

Abstract: A wind turbine blade (1, 3, 5) comprising at least one central spar longitudinal section (7, 7?, 7?) composed of two cap prefabricated panels (15, 17) and two web prefabricated panels (19, 21) placed side by side in a box shape and at least two shell longitudinal sections (5, 5?, 5?, 5??, 5??; 9, 9?, 9?, 9??) forming, respectively, the leading edge and the trailing edge of the corresponding blade section that are placed adjacently to a central spar section (7, 7?, 7?) and are composed of a single prefabricated panel (31, 33) or of two prefabricated panels (11, 23; 13, 25), the aerodynamic profile of the blade being defined by said cap panels (15, 17) and said single shell panels (31; 33) or said two shell panels (11, 23; 13, 25).