Provided is a wind turbine blade for a wind turbine, including a web extending along a longitudinal direction of the blade, an electrically conductive beam extending along the longitudinal direction of the blade and being connected to the web, a lightning conductor extending along the longitudinal direction of the blade and being attached to the web, and a ply including carbon fibers, wherein the ply is attached to both the lightning conductor and the beam to electrically connect the lightning conductor to the beam. This has the advantage that an extensive and a continuous electrical connection between the lightning conductor and the beam is provided and that a plurality of cables electrically connecting the lightning conductor with the beam may be substituted.

Fracture-resistant and self-lubricating wear surfaces are provided. In an implementation, a machine surface that is subject to wear is coated with or is constructed of a metallic nanostructure to resist the wear and to provide fracture-resistant hardness, built-in lubrication, and thermal conductivity for heat-sinking friction. The metallic nanostructured surface may be used, for example, on a face seal, bushing, bearing, thrust member, or hydraulic flow passage of an electric submersible pump. In an implementation, the metallic nanostructured surface is a nanocrystalline alloy including nanograin twins of a body-centered cubic (BCC), face-centered cubic (FCC), or hexagonal closest packed (HCP) metal. The nanostructured alloy may include atoms of copper, silver, gold, iron, nickel, palladium, platinum, rhodium, beryllium, magnesium, titanium, zirconium, or cobalt, and may provide more hardness and lubricity than diamond-like carbon coatings or carbides.

A belt, preferably for use in a device for rotor blade adjustment on a wind turbine, includes a base body made of polymeric material and at least one strength member made of metallic material, which is embedded in the base body and running in the longitudinal direction. The belt has a first surface and a second surface situated opposite the first surface, in which at least the first surface has a reinforcing fabric. The belt has at least one sacrificial anode made of a metallic material, in which the metallic material is less noble than the metallic material of the strength member.

The present disclosure provides a method of manufacturing a composite laminate structure of a wind turbine blade part by means of resin transfer moulding, preferably vacuum-assisted resin transfer moulding. In a resin transfer moulding, fibre-reinforcement material is impregnated with liquid resin in a mould cavity. The mould cavity comprises rigid mould part having a mould surface defining a surface of the wind turbine blade part.

The method comprises alternately stacking on the rigid mould part: i. a number of unidirectional fibre-reinforcement layers comprising electrically conductive fibres, such as carbon fibres, and ii. a flow-enhancing fabric layer for enhancing a flow of the resin during infusion of the fibre-reinforcement layers, the flow-enhancing fabric layer comprising an open-structured layer made of a first material, wherein the flow-enhancing fabric layer comprises a longitudinal direction and a transverse direction,

The flow-enhancing fabric layer further comprises filaments or bundles of fibres made of a second material, which is an electrically conductive material and which are arranged and configured to provide a conductive path from first electrically conductive fibres of a first fibre-reinforcement layer on a first side of the flow-enhancing layer to second electrically conductive fibres of a second fibre-reinforcement layer on a second side of the flow-enhancing layer.

A compressor wheel that can be employed in devices such as turbochargers. The compressor wheel includes an axially extending hub having an inlet end, a shaft bore extending from the inlet end and an arcuate outer surface opposed to the shaft bore. The axially extending hub is composed of a metal and has a porous region located proximate to the arcuate outer surface of the axially extending hub. The compressor wheel also includes a blade array disposed on the arcuate outer surface of the axially extending hub. The blade array has an outer surface and an inner region. The blade array comprises a plurality of circumferentially-spaced, radially and axially extending blades disposed thereon and is composed, at least in part of a polymeric material. Polymeric material located in the inner region of the blade array extends into the porous region defined in the axially extending hub.

A spar cap for a rotor blade of a wind power installation, having a longitudinal extent from a first end to a second end, a transverse extent orthogonal to the longitudinal extent, and a thickness orthogonal to the longitudinal extent and to the transverse extent. A method for producing a spar cap as mentioned at the outset. The spar cap has a longitudinal extent from a first end to a second end, a transverse extent orthogonal to the longitudinal extent, and a thickness orthogonal to the longitudinal extent and to the transverse extent, at least two tiers of a first fiber composite material, and at least one tier of a second fiber composite material, wherein the first fiber composite material has a matrix material and/or fibers which is/are different from that/those of the second fiber composite material, the second fiber composite material is disposed in a portion adjacent to the second end, in the direction of the thickness between the at least two tiers of the first fiber composite material, and the at least one tier of the second fiber composite material terminates ahead of the second end.

The present invention relates to a blade control apparatus and method for a wind power generator, and a wind power generator using the same, which includes a measurement unit configured to measure a change in electrical characteristic of a measurement section set in a conductive region having electrical conductivity. The conductive region is included in the blade for the wind power generator. Thus, the state of the blade may be easily checked without separate sensors, and the blade may be controlled in response to the state of the blade.

The present invention describes a wind turbine whose blades have: a differentiated slope intended to compensate for the structural deformations caused by the wind action; a pitch control mechanism for better use of wind speed and direction in each section of blade length; parallel internal and movable structural tubes with each other that make the blade structure more flexible; steel wires connecting the blade ends so that they remain cable-stayed and rigid against wind forces; besides a tubular structure for wind blade; a wind turbine; and a method of controlling wind utilization. The present invention is in the field of renewable energy technologies.

A wind turbine blade, extending longitudinally root end to tip end, having a load carrying structure, a shell body and a lightning protection system is described. The load carrying structure is fiber-reinforced polymer in a plurality of stacked layers comprising electrically conductive fibers. The lightning protection system comprises a lightning receptor arranged freely accessible in or on the shell body and a lightning down-conductor electrically connected to the lightning receptor and is configured to be electrically connected to a ground connection. The blade further comprises a potential equalisation system providing a potential equalising connection between a number of the electrically conductive fibers of the load carrying structure and the lightning protection system. The system comprises a dissipating element made of an electrically conductive material which in turn comprises at least one transverse connector arranged to extend transverse through a thickness of the stacked fiber layers and configured to dissipate.

A method of manufacturing a composite laminate structure of a wind turbine blade part is performed by resin transfer moulding. The fibre-reinforcement material is impregnated with liquid resin in a mould cavity which includes a rigid mould part having a mould surface defining a surface of the wind turbine blade part. The method includes alternately stacking on the rigid mould part: i) a number of fibre-reinforcement layers including electrically conductive fibres and ii) a flow strip layer in form of a layer of flow strips having a strip width and which are arranged so as to form voids having a void width between two juxtaposed strips. The method includes sealing a second mould part against the rigid mould part in order to form the mould cavity, optionally evacuating the mould cavity, supplying a resin to the mould cavity, and curing the resin to form the composite laminate structure.