Abstract: A wind-turbine rotor blade, comprising a blade root and a blade tip, a flange arranged on the blade root side for fastening the rotor blade to a rotor hub of a wind turbine, and a pitch bearing for adjusting the angle of attack of the rotor blade. The rotor blade has a non-pitched carrier, on which the flange is embodied, wherein the pitch bearing is fastened to the carrier and is spaced apart from the flange toward the blade tip.

Abstract: A hydraulic system of a transmission includes a plurality of pressure control valves. A pilot force component and an actuating force component of additional pressure control valves are applicable in the direction of a first end position of a valve slide. A downstream pressure of the additional pressure control valves is applicable in the direction of a second end position of the valve slide. Clutch valves are configured to be brought into operative connection by a pilot-controlled valve unit with an area guiding pressure of a primary pressure circuit or with an additional valve unit. The additional valve unit is a pressure-limiting valve with a predefined pressure level adjusted upstream of the additional valve unit and connected downstream to a low-pressure area.

Abstract: A method for producing a split rotor blade, a method for connecting a split rotor blade, a rotor blade, a rotor blade segment, a rotor, a wind power plant, and a production device for producing rotor blades. A method for producing a split rotor blade, comprising: providing a rotor blade having a spar cap and an extension in the longitudinal direction from a blade root region to a blade tip; making at least one groove in the spar cap, the groove being arranged in a first connection region of the rotor blade, and a portion of the main extension direction of the groove being oriented parallel to the longitudinal direction; splitting the rotor blade, in the first connection region, into a rotor blade section facing the blade root and a rotor blade section facing away from the blade root, a first groove section being arranged in the rotor blade section facing the blade root and a second groove section being arranged in the rotor blade section facing away from the blade root.

Abstract: A rotor blade for a wind turbine, to a rotor for a wind turbine, to a wind turbine, to a method for producing a rotor blade, to a method for connecting a rotor blade to a rotor hub and to a method for repairing a rotor of a wind turbine. The rotor blade has a connection interface, the connection interface having at least one cutout for receiving a tension element for connecting the rotor blade to a further element of a wind turbine, an outer circumferential surface of the cutout being formed of a connection material and having an internal thread.

Abstract: A rotor blade for a wind turbine having an aerodynamic profile which extends from a blade root up to a blade tip and has a leading edge and a trailing edge. An adjustable aerodynamic flap, which can be adjusted between a retracted and a deployed position by means of a flap drive, is provided on the rotor blade. The flap drive comprises a passive control system which controls a flap position depending on rotation speed. The passive control system of the flap drive is low-maintenance and does not interfere with the safety concept of a wind turbine. In comparison with a reference rotor blade without a flap, the rotor blade has increased lift at low wind speeds.

Abstract: A method for operating a parking lock device with a hydraulic system, the method including applying the pressure between the parking lock valve and the pressure chamber at the parking lock valve against the actuating force. Moreover, when there is a demand to disengage the parking lock device, the method includes applying the pilot pressure at the parking lock valve against the actuating force when the pressure between the parking lock valve and the pressure chamber of the parking lock valve is less than a threshold value at which the parking lock valve is transferred into a further operating condition range. Additionally, when there is a demand to disengage the parking lock device, the method includes adjusting the pilot pressure applied at the positioning valve to a pressure level at which the positioning valve is transferred into or held in its defined operating condition range.

Abstract: A method of producing a wind turbine rotor blade For that purpose metal particles, metal powder or metal chips are mixed into a matrix used to produce the rotor blade. Inductive heating of the matrix with the metal particles, metal powder or metal chips is then effected to harden the matrix in at least one portion of the wind turbine rotor blade.

Abstract: A wind-turbine rotor blade having a rotor blade portion which comprises an inner rotor blade portion with a first end having a plurality of fastening units for fastening to a hub of a wind turbine and a second end having a flange for fastening further portions of the wind-turbine rotor blade, wherein the inner rotor blade portion is produced from polymer concrete, wherein the rotor blade portion has a plurality of resin-impregnated fiber-composite laid scrims or rovings which are wound around the inner rotor blade portion.

Abstract: A wind turbine rotor blade with a rotor blade tip, a rotor blade root, and a rotor blade connection in the region of the rotor blade root with a rotationally symmetrical flange coupling is provided which has a first and a second end. The first end of the flange coupling has multiple bores for receiving fastening means for fastening to a hub of a wind turbine. The second end is fastened in or on material of the rotor blade root. The second end extends in the direction of an axis of rotation of the flange coupling.

Abstract: A lighting element for illuminating a component of a wind power installation, in particular a rotor blade and/or a rotor and/or a tower and/or a nacelle. A component for a wind power installation, in particular a rotor blade and/or a rotor and/or a nacelle and/or a tower for a wind power installation. A wind power installation and a method for illuminating a component of a wind power installation. The lighting element comprises a lighting portion and a connection portion, wherein the connection portion is embodied and arranged to be connected in an interior of the component and the lighting portion is arranged and embodied to protrude from an opening of the component and the lighting portion is arranged and embodied to irradiate the component from which it protrudes.

Abstract: A rotor blade for a wind turbine comprising a blade root to be fastened to a rotor hub, a blade tip opposite the blade root, a rotor blade longitudinal axis extending from the blade root to the blade tip, an inner rotor blade part on the near side of the blade hub, especially encompassing the blade root, and an outer blade part on the far side of the blade hub, especially encompassing the blade tip. The inner rotor blade part and the outer rotor blade part are joined to one another in a joining zone which forms a bulge in the rotor blade.

Abstract: A rotor blade of a wind turbine, comprising a first rotor-blade portion and a second rotor-blade portion. In this case, the first and the second rotor-blade portion constitute a total length of the rotor blade and, upon a rotation of the rotor blade, the first rotor-blade portion and the second rotor-blade portion can be moved relative to each other, along a longitudinal axis of the rotor blade, as a result of a centrifugal force acting upon the rotor blade, in such a way that the total length of the rotor blade can be altered.

Abstract: A winding core for producing blade ends for rotor blades of wind power installations and to a mold for producing trailing edge segments is provided. Methods for producing a blade end, for producing a trailing edge segment and for producing a rotor blade and also to a rotor blade and a rotor blade series are provided. The winding core comprises a first section with a first end for forming a hub connection geometry for connecting the blade end to a rotor hub, and a second section with a second end for forming an outer blade connection geometry for connecting the blade end to an outer blade, wherein it is possible by exchanging or completely or partially removing the first section to vary a longitudinal extent of the winding core and/or a diameter of the first section and/or a shape of the first section such that blade ends produced therewith are suitable for wind power installations with different rotor diameters.

Abstract: A rotor blade element, in particular produced by a process according to claim 10, in particular a rotor blade edge for a wind turbine, with a base comprising a fiber material saturated with curable resin and with a surface foil, with, arranged between base and surface foil, a bonding layer. The invention proposes that the surface foil comprises polyethylene with ultra-high molecular weight and that the bonding layer comprises a first rubber layer and a second rubber layer, where the first rubber layer is allocated to the surface foil and the second rubber layer is allocated to the base.

Abstract: A method for actuating a hydraulic system of a transmission comprising a variable displacement hydraulic pump and a pilot-controllable system pressure valve, the method including, in order to determine a pump characteristic curve of the hydraulic pump, initially transferring the hydraulic system into a defined operating condition range in which the volumetric output flow, routed via the system pressure valve and applied at the system pressure valve by the hydraulic pump, is greater or less than a hydraulic fluid flow out of the hydraulic system. The method further includes pilot-controlling the system pressure valve to set a defined pressure level of the system pressure. The method additionally includes reducing or increasing the volumetric output flow while monitoring the system pressure, and determining a volumetric output flow corresponding to the hydraulic fluid flow of the hydraulic system with a certain deviation of a current system pressure from the defined system pressure.

Abstract: The invention relates to a wind energy plant with a nacelle, a generator located in the nacelle, a tower and a yaw bearing to adjust the nacelle orientation into the wind, such that the yaw bearing is located under the nacelle in a vertical yaw displacement and the nacelle is supported on the yaw bearing above a vertical shaft section of the same length as the yaw displacement.

Abstract: A wind turbine comprising a tower and a nacelle, wherein a rotor having at least one rotor blade is disposed on the nacelle, and the rotor executes a rotary motion when the wind turbine is in operation and the rotary motion drives a generator within the nacelle, via a shaft, wherein disposed on the tower of the wind turbine there is a fiber winding, which wraps around a vertical tower axis of the tower of the wind turbine and which is configured to damp a vibration of the tower.

Abstract: A method for operating a parking lock device with a hydraulic system, the method including applying the pressure between the parking lock valve and the pressure chamber at the parking lock valve against the actuating force. Moreover, when there is a demand to disengage the parking lock device, the method includes applying the pilot pressure at the parking lock valve against the actuating force when the pressure between the parking lock valve and the pressure chamber of the parking lock valve is less than a threshold value at which the parking lock valve is transferred into a further operating condition range. Additionally, when there is a demand to disengage the parking lock device, the method includes adjusting the pilot pressure applied at the positioning valve to a pressure level at which the positioning valve is transferred into or held in its defined operating condition range.

Abstract: A method for operating a parking lock device (21) with a hydraulic system (1), the method including, when there is a demand to engage the parking lock device (21) originating from a disengaged operating condition of the parking lock device (21), applying a pilot pressure (p_EDS4) at the parking lock valve (PSV) and applying the main pressure (p_sys) at the parking lock valve (PSV), if necessary, via the positioning valve (POSV). The pilot pressure (p_EDS4) and the main pressure (p_sys) are each guided to defined pressure levels at which the parking lock valve (PSV) is transferrable into the further operating condition range of the parking lock valve (PSV) by the active actuating force against the pilot pressure (p_EDS4) and against the pressure between the parking lock valve (PSV) and the parking lock cylinder (23).

Abstract: A wind-turbine rotor blade, comprising a blade root and a blade tip, a flange arranged on the blade root side for fastening the rotor blade to a rotor hub of a wind turbine, and a pitch bearing for adjusting the angle of attack of the rotor blade. The rotor blade has a non-pitched carrier, on which the flange is embodied, wherein the pitch bearing is fastened to the carrier and is spaced apart from the flange toward the blade tip.