Abstract: A load mitigation arrangement of a non-mounted rotor blade, includes at least one actuatable lift-modification device arranged on a surface of the rotor blade; a monitor configured to estimate the magnitudes of loads acting on the non-mounted rotor blade; a controller configured to actuate the lift-modification device on the basis of the estimated magnitudes to mitigate the loads acting on the non-mounted rotor blade. Further provided is a rotor blade assembly, and a method of performing load mitigation on a non-mounted rotor blade.

Abstract: A leak containment arrangement for a fluid damper in a wind turbine tower includes a receptacle arranged below the fluid damper; a fluid guide arranged between the fluid damper and the receptacle, which fluid guide is arranged to receive fluid from a leak in the damper and to guide the leaked fluid into the receptacle; and a sensing means arranged to detect fluid in the receptacle. Further provided is a method of providing leak containment for a fluid damper in a wind turbine tower.

Abstract: Provided is a control system for stabilizing a floating wind turbine, the comprising a detection device for monitoring an offset from a predetermined floater pitch angle and/or an offset from a predetermined floater yaw angle, wherein the detection device is further configured for monitoring an oscillating motion of the floater pitch angle and/or the floater yaw angle, wherein the predetermined floater pitch angle and floater yaw angle define a predetermined balanced state of the floating wind turbine, wherein a threshold of the oscillating motion of the floater pitch angle and the oscillating motion of the floater yaw angle further define the predetermined balanced state of the floating wind turbine, and an actuation device configured for manipulating the oscillating motion of the floater pitch angle and/or the oscillating motion of the floater yaw angle until the predetermined balanced state of the floating wind turbine is met.

Abstract: Provided is an arrangement for transporting a wind turbine component, the arrangement including: a first portion adapted to be placed on a loading area, in particular of a trailer; a second portion, in particular component adapter portion, adapted to support the component; the first portion and the second portion each having a respective connection interface via which the first portion and the second portion are reversibly couplable to each other.

Abstract: A cage for a monopile of an offshore wind turbine is provided, configured to extend, in an installed state, in a height direction of the monopile, wherein the cage includes one or more supports for holding one or more pipes and/or tubes, and a first inner diameter at a lower portion thereof and a second inner diameter at an upper portion thereof, the second inner diameter) being smaller than the first inner diameter, and wherein the cage is configured to be arranged on the monopile having a conically shaped outer surface tapered in the height direction such that the upper portion of the cage rests at the conically shaped outer surface of the monopile. The cage can be attached by resting it on the conically shaped outer surface of the monopile.

Abstract: A nacelle for a wind turbine includes a nacelle roof and a first wind turbine component, wherein the nacelle roof is configured to cover the first wind turbine component, the nacelle roof including a first sliding section and a second sliding section, wherein the first sliding section and/or the second sliding section is configured to slide over at least a part of the surface of the nacelle roof, wherein the first sliding section and the second sliding section are moveable between a closed position, in which the first wind turbine component is covered by the nacelle roof, and an opened position, resulting in an opening of the nacelle roof through which the first wind turbine component is hoisted.

Abstract: A method for manufacturing a wind turbine, the method includes the steps of: a) manufacturing a bottom module, the bottom module including at least one first platform; b) manufacturing a top module, the top module includes at least one second platform; and c) assembling the bottom module and the top module to form a platform assembly is provided. Manufacturing the platform assembly from two separate modules allows to manufacture a higher platform assembly.

Abstract: A wind turbine support assembly includes a bedframe and a support structure, wherein the bedframe is adapted for attaching the support assembly to a wind turbine tower, wherein the support structure includes at least one beam, wherein a web section of the beam is attached to an attachment area of the bedframe by a bolted connection including at least one bolt arranged perpendicular to the web section, wherein on the side of the web section opposite to the attachment area at least one retaining means is arranged for holding a bolt or a nut, which is attached to the bolt, in a non-rotatable manner.

Abstract: A rotation limit detector, wind turbine and method to detect a limit of rotation of a toothed ring of a rotating assembly includes a pinion mounted on a primary shaft to engage with the toothed ring; a transmission system configured to convert rotation of the primary shaft into rotation of a secondary shaft; a first switch actuator mounted on the secondary shaft, and a first switch for inclusion in a control circuit, wherein the first switch actuator is configured to actuate the first switch when the extent of rotation of the toothed ring has reached a predefined limit in a clockwise direction; and a second switch actuator mounted on the secondary shaft, and a second switch for inclusion in the control circuit, wherein the second switch actuator actuates the second switch when the extent of rotation of the toothed ring has reached a predefined limit in a counter-clockwise direction.

Abstract: A handling arrangement for handling a wind turbine rotor blade includes a frame assembly realized to fit about the airfoil of the rotor blade; a number of add-on covers arranged to fit between the frame assembly and the airfoil surface, wherein an add-on cover is shaped to fit around a number of add-ons; and a load-bearing material for filling the add-on cover when the add-on cover is pressed against the rotor blade. A method of handling a wind turbine rotor blade is also provided.

Abstract: An electric circuit providing a ground connection includes at least two brushes and a contact member, wherein each brush and the contact member form a sliding contact, wherein the contact member is connected to a ground potential by at least one of the sliding contacts, wherein at least two of the sliding contacts are connected to a current source adapted to provide a current through the sliding contacts.

Abstract: Provided is a method for determination of a location of a short circuit fault in a generator arrangement, wherein the generator arrangement includes an electrical machine and at least one channel, wherein the or each channel includes a breaker, a converter unit and a set of stator windings of the electrical machine connected to the converter unit via the breaker, wherein upon an occurrence of a short circuit in a channel, the connection between the set of stator windings and the converter unit is interrupted by opening the breaker, wherein depending on at least one measured signal of a measurand, wherein the measured signal is measured by at least one sensor of the electric machine and wherein the measurand describes a torque ripple of the electrical machine, either the electrical machine or the converter unit of the channel is determined as location of the short circuit fault.

Abstract: A safety door assembly for a hoist window of a structure includes a sliding door arranged to reveal or conceal the hoist window; and a barrier assembly which is closed to inhibit access to an area in front of the hoist window or opened to permit access to the area in front of the hoist window; and wherein the barrier assembly is adapted to prevent the sliding door from revealing the hoist window when the barrier assembly is open; and the sliding door is adapted to prevent opening of the closed barrier assembly when the sliding door reveals the hoist window.

Abstract: A thermal assembly of a wind turbine is provided, including an external liquid-to-air heat exchanger arranged to lower the temperature of a liquid coolant in a coolant circuit which coolant circuit is arranged to convey the liquid coolant to a number of heat-dissipating components during operation of the wind turbine; and a thermal assembly control arrangement realized to exclude the external liquid-to-air heat exchanger from the coolant circuit during an off-grid mode of the wind turbine. Also provided is a method of operating a wind turbine in an off-grid mode, the wind turbine including an embodiment of such a thermal assembly.

Abstract: Provided is a wind turbine including multiple components generating heat during operation of the wind turbine and a liquid cooling system, wherein the multiple components are thermally coupled by a liquid coolant cycle of the liquid coolant system to an ambient heat exchanger of the liquid coolant system, the ambient heat exchanger being arranged to exchange heat between a liquid coolant contained in the liquid coolant cycle and ambient air, whereby the liquid coolant system includes a heat pump having a cooling operation mode, wherein the heat pump is arranged in the coolant liquid cycle such that the liquid coolant of the liquid coolant cycle is cooled, when the heat pump is operated in the cooling operation mode. Also provided is a method for operating the wind turbine.

Abstract: A wind turbine component adapted to be attached to a wind turbine, wherein the component is a cover element adapted to cover at least one part of a wind turbine or an aerodynamic element adapted to be attached to a rotor blade of a wind turbine, wherein the component includes a main body with a continuous and at least partly curved surface, wherein the main body is formed by a layer stack including a plurality of layers, wherein at least two of the layers are of a different material.

Abstract: A method of controlling a wind turbine includes the step of boosting the output power of the wind turbine above the nominal power of the wind turbine, according to a boost operational function representing a boost level for the wind turbine. The boost operational function is a crescent function of an operational variable at least between a first threshold value and a second threshold value of the operational variable.

Abstract: A self-clamping cable guard for clamping power cables of a power cable bundle of a cable support arrangement in a wind turbine, whereby the self-clamping cable guard includes three recesses arranged about a central longitudinal axis of the self-clamping cable guard for positively clamping a power cable of the power cable bundle inside of each of the three recesses, and whereby the self-clamping cable guard includes three wear protection plates arranged about the central longitudinal axis, whereby each of the three recesses includes an open side for insertion of a respective power cable of the power cable bundle therein, each of the open sides of one of the three recesses being respectively limited by two of the three wear protection plates to protect the power cables clamped inside the recesses from wear. A cable support arrangement for a wind turbine and a wind turbine is also provided.

Abstract: A stator segment for an electric machine, in particular for a wind turbine generator is provided, the stator segment including a support structure, a lamination stack, and at least one fastening member for fastening the lamination stack to the support structure, wherein the lamination stack includes a plurality of lamination packets stacked between a drive end and a non-drive end, each lamination packet including a yoke having a plurality of teeth extending radially outwards on one side of the yoke and a connection structure formed at the side opposite the teeth, the connection structure being shaped to engage with the at least one fastening member in such a way that a part of the fastening member extends within the yoke. Furthermore, a stator, a wind turbine and a method of manufacturing are provided.

Abstract: A fault gas detection system for a liquid filled high voltage transformer, the transformer including a main tank and an expansion tank the tanks fluidic connected by an exchange conduit such that gas and/or a transformer liquid is able to exchange between the tanks, the gas detection system including: a chamber with a top cover, a predefined horizontal level-plane in the chamber defining a maximum liquid level of a transformer liquid in the chamber during use, a fluid-channel including a fluid-egress at a level equal to or higher than the top cover and a fluid-ingress lower than the level of the level-plane, a level sensor designed to measuring and/or indicating a liquid level. A respective transformer and a respective wind turbine system is also provided.