Abstract: A manufacturing method for a wind turbine blade is described which utilizes a post-molding station in the manufacturing process. A blade shell forming part of a wind turbine blade is initially molded in a blade mold, the blade shell subsequently transferred to a post-molding station which allows for various post-molding operations to be carried out on the blade shell away from the mold, thereby increasing the productivity of the blade mold in the manufacturing process. The post-molding station may be operable to perform the closing of first and second blade shells to form a wind turbine blade, and may be formed from an adjustable structure which can provide relatively easy access to the contained blade shell for working thereon. Accordingly, the manufacturing equipment may be of reduced cost, combined with an increase in the overall productivity of the manufacturing system.

Abstract: A post-molding station is described which is used in the manufacturing of a wind turbine blade. A blade shell forming part of a wind turbine blade is initially molded in a blade mold, the blade shell subsequently transferred to a post-molding station which allows for various post-molding operations to be carried out on the blade shell away from the mold, thereby increasing the productivity of the blade mold in the manufacturing process. The post-molding station may be operable to perform the closing of first and second blade shells to form a wind turbine blade, and may be formed from an adjustable structure which can provide relatively easy access to the contained blade shell for working thereon. Accordingly, the manufacturing equipment may be of reduced cost, combined with an increase in the overall productivity of the manufacturing system.

Abstract: A wind turbine blade is described having a lightning protection system wherein a lightning down conductor is conductively coupled to at least one blade root bushing provided at the root end of the blade. The use of the blade root bushing as part of the conductive path of the lightning protection system allows for a structurally sound and reliable connection of an internal down conductor to an external lightning protection system and/or to a suitable ground connection at the blade root end.

Abstract: A wind turbine blade (10) for a horizontal axis wind turbine (2), wherein the wind turbine blade (10) extends in a longitudinal direction parallel to a longitudinal axis and having a tip end (14) and a root end (16), and wherein the wind turbine blade (2) further comprises a shell body is disclosed. The wind turbine blade (10) further comprises a root end flange (55, 155, 255) at the root end (16) of the blade (10) and which comprises a ring-shaped body that extends circumferentially along the entire root end (16), the root end flange (55, 155, 255) preferably made from a metal, such as stainless steel. The root end flange (55, 155, 255) comprises an inwardly extending protrusion (70, 170) with a distal plate part (72, 172, 272, 372, 472, 572, 672, 772) arranged in a distance from the ring body.

Abstract: A wind turbine blade for a wind turbine is a shell structure of a fiber-reinforced composite and comprises a root region and an airfoil region. The root region has a ring-shaped cross section and comprises a plurality of elongated bushings 7 with an inner thread 22 and which are embedded interspaced in the fiber-reinforced polymer so as to substantially follow the circumference of the root region and allow access from the outside to the inner threads 22. The bushings 7 are formed conically tapering from a second end towards a first end thereof, the first end of the bushing 7 being arranged at the end face of the root region.

Abstract: A wind turbine blade is described having a lightning bypass system located at the root end of the blade. The lightning bypass system comprises a stay bolt formed from an electrically insulating material having a conductive core. The conductive core of the stay bolt provides a conductive path for a lightning down conductor system through the root end of a wind turbine blade to the turbine hub or nacelle, bypassing any sensitive root end components of the wind turbine blade.

Abstract: A wind turbine blade for a wind turbine is a shell structure of a fiber-reinforced composite and comprises a root region and an airfoil region. The root region has a ring-shaped cross section and comprises a cylindrical insert 7 embedded in the fiber-reinforced polymer so as to substantially follow the circumference of the root region. The cylindrical insert is provided with a number of mutually spaced threaded bores 12, 15 in a first end 9 thereof being accessible from the outside.

Abstract: A system and method for reducing the operational noise of a blunt trailing edge of a wind turbine blade is described. The system involves increasing the trailing edge solid angle at the blade trailing edge by providing a wedge element or projection adjacent the trailing edge of the blade, the wedge element acting to provide improved mixing of the suction side and pressure side flows at the blunt trailing edge, thereby reducing the strength of vortex shedding at the trailing edge and the associated operational noise.

Abstract: A wind turbine blade is described wherein at least on planar member is provided on the blade surface, where the planar member is arranged such that it extends at an angle to the chord of the blade. The planar member acts to re-direct airflow over the blade, to improve wind turbine performance. The planar member may be a stall fence provided towards the blade root end, further acting to divert airflow towards the root end of the blade to prevent separation of attached airflow. Additionally or alternatively, the planar member may be a flow diverter provided towards the blade tip end, to increase airflow in the tip region for increased performance and/or to disrupt the formation of tip vortices.

Abstract: A wind turbine blade (1) is formed of a fiber-reinforced composite material comprising a polymer matrix. The blade (1) further comprises a first region (11), a second region (12) and a transition region (13) between the first and the second region (11, 12). The first region (11) is reinforced predominantly with a first reinforcement fiber material (21). The second region (12) is reinforced predominantly with a second reinforcement fiber material (22). The first and the second reinforcement fiber material differ from each other and has differing E-modulus. The transition region (13) additionally comprises a third type of reinforcement fiber material (23) differing from both the first and the second reinforcement fiber material (21; 22) and having an E-modulus between that of the first reinforcement fiber material (21) and that of the second reinforcement fiber material (22).

Abstract: A control method for a wind turbine, in particular for a wind turbine blade is described. The control method makes use of the blade mode shapes, or natural vibration shapes, of the blade to detect the excitement level of the blade natural vibrations, and controls active lift devices on the blade in an effort to reduce the excitement levels, to reduce loading in the blade and the overall wind turbine structure. There is also provided a method of designing a wind turbine blade for use in such a method.

Abstract: A system and method for the verification and calibration of wind turbine sensor systems is provided. The system comprises an optical capture device provided on a wind turbine which is arranged to record the position of at least one light source provided at the wind turbine during operation of the wind turbine. The motion of the light source relative to the optical capture device can provide an indication of relative motion of a portion of the wind turbine during operation, which can then be used as an input to a calibration and/or a verification system for a sensor system of the wind turbine.

Abstract: A turning device, for manufacturing wind turbine blades and turning moulds relative to each other, having a base, a rotational part movable relative to the base on an rotational axis, a first linear actuator with first and second ends, the first end attaching to the base, and the second end attaching to the rotational part at a first anchor point on a first turning axis, and a second linear actuator having first and second ends, the first end attaching to the base, and the second end attaching to the rotational part at a second anchor point on a second turning axis. The first turning axis is a first distance from the rotation axis and is moved on a first arc on the rotation axis, and the second turning axis is a second, different distance from the rotation axis and is moved along a second arc on the rotation axis.

Abstract: A transportation and storage system for at least two wind turbine blades include a first wind turbine blade and a second wind turbine blade is described. The wind turbine blades each have a root end and a tip end. The system includes a packaging system adapted to place the first wind turbine blade so that the tip end of the first wind turbine blade points in a first direction, with the tip end of the second wind turbine blade pointing in a second direction, which is substantially opposite to the first direction. The tip end of the second wind turbine blade extends beyond the root end of the first wind turbine blade, and the tip end of the first wind turbine blade extends beyond the root end of the second wind turbine blade, when the first and the second wind turbine blades are arranged in the packaging system.

Abstract: A turning device, for manufacturing wind turbine blades and turning moulds relative to each other, having a base, a rotational part movable relative to the base on an rotational axis, a first linear actuator with first and second ends, the first end attaching to the base, and the second end attaching to the rotational part at a first anchor point on a first turning axis, and a second linear actuator having first and second ends, the first end attaching to the base, and the second end attaching to the rotational part at a second anchor point on a second turning axis. The first turning axis is a first distance from the rotation axis and is moved on a first arc on the rotation axis, and the second turning axis is a second, different distance from the rotation axis and is moved along a second arc on the rotation axis.

Abstract: An erosion shield for a wind turbine blade is described, the erosion shield having a plurality of layers of erosion resistant material. The layers of erosion resistant material have an adhesive bond strength between adjacent layers less than the cohesive tensile strength of the layers, such that the outer layers of erosion resistant material are arranged to peel away or delaminate from the erosion shield under the action of the wind once the particular layer is ruptured or eroded. This dynamic removal of the outer layers of the erosion shield provides for increased shield lifetime, and a reduction in the maintenance operations required for a wind turbine blade having such an erosion shield.

Abstract: A component for a wind turbine blade is described having a reinforced through-going aperture. The reinforcement can be provide by way of a fibre rope arranged around the periphery of the aperture, or as fibre material arranged in a radially-extending arrangement from the aperture.

Abstract: A wind turbine blade 2 comprises a profiled contour including a leading edge 34 and a trailing edge 33 as well as a pressure side and a suction side. The profiled contour is formed by a first shell part 10 and a second shell part 15 being bonded together in a bonding region between the first and the second shell part by a curable bonding means 40. The first and the second shell part 10; 15 are formed in a fiber-reinforced polymer. The wind turbine blade further comprises resistive heating means 50 being arranged in thermal connection with the bonding means 40 such that the resistive heating means 50 supplies heat for curing of the curable bonding means 40 during assembling of the wind turbine blade.

Abstract: A transportation and storage system for at least two wind turbine blades and comprising a first wind turbine blade and a second wind turbine blade is described. The wind turbine blades each having a root end and a tip end, said system comprising a packaging system that is adapted to placing the first wind turbine blade so that the tip end of the first wind turbine blade points in a first direction, and placing the second wind turbine blade so that the tip end of the second wind turbine blade points in a second direction, which is substantially opposite to the first direction. The tip end of the second wind turbine blade extends beyond the root end of the first wind turbine blade, and the tip end of the first wind turbine blade extends beyond the root end of the second wind turbine blade, when the first and the second wind turbine blades are arranged in the packaging system.

Abstract: A wind turbine blade (10) for a rotor of a wind turbine (2) having a substantially horizontal rotor shaft is disclosed. The rotor comprises a hub (8), from which the blade (10) extends substantially in a radial direction when mounted to the hub (8), the blade having a longitudinal direction (r) with a tip end (16) and a root end (14) and a transverse direction. The wind turbine blade comprises a blade shell defining a profiled contour of the blade and having an inner shell wall, wherein the blade is provided with a bulkhead mounted to the inner shell wall at the root end of the blade via an attachment part, the bulkhead comprising a first side and a second side. The attachment part is integrally formed with or connected to the bulkhead, and the attachment part comprises an elastomeric material.