Abstract: Wind turbine with at least one rotor blade and at least one optical pressure sensor arranged on the rotor blade, and method for operating the wind turbine.

Abstract: A rotor arresting device, to a wind turbine and to a method for arresting and/or rotating a rotor. The rotor arresting device comprises a rotor, a rotational assembly, and a static assembly fixed in position, comprising a toothed disk, which can be arranged on the rotational assembly, having a plurality of arresting recesses arranged along a circumference, wherein two adjacent arresting recesses form a tooth, a first arresting module having at least one first arresting element, a second arresting module having at least one second arresting element, wherein the first and the second arresting module can be arranged on the static assembly, wherein the first and the second arresting element are arranged and designed to engage in arresting recesses of the toothed disk, wherein the spacing of the first arresting element from the second arresting element in the circumferential direction of the toothed disk is a non-integral multiple of a tooth tip spacing of the toothed disk.

Abstract: A method for operating a wind turbine (WEA), which has a generator for supplying electric power to an electric supply grid, is provided. After being operated in a first operating state with a first power output and a first rotational speed, the wind turbine is set to a second operating state with a second power output and a second rotational speed. In order to set the wind turbine to the second operating state, an aerodynamic power output which is available for supply is determined, a target rotational speed is determined from the available output, and a target output to be set for the generator is specified from the target rotational speed.

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 generator rotor for a generator, in particular a slowly rotating generator, of a wind turbine or a hydroelectric power plant. The rotor generator comprises a rotor belt for holding a plurality of pole shoes, a hub flange for fixing the generator rotor to a shaft, in particular a main shaft or a transmission shaft, of the wind turbine, or for fixing to a number of turbine blades of the hydroelectric power plant, and a carrier structure which is respectively non-rotatably connected to the rotor belt on the one hand and to hub flange on the other hand, wherein the rotor belt comprises a metallic material having a first degree of damping (D1) and at least one of: the carrier structure or the hub flange partially or completely comprises a material having a second degree of damping (D2), wherein the second degree of damping (D2) is higher than the first degree of damping (D1).

Abstract: A method for feeding electrical power into an electrical supply network by means of at least one wind farm respectively connected to the supply network via a network connection point, wherein the supply network is to be operated at a network frequency, and each wind farm has a plurality of wind power installations, comprising the steps of determining whether the electrical supply network is operating, starting the at least one wind farm in a black-start mode for the purpose of producing electrical power for feeding into the supply network if the supply network is not operating, operating the at least one wind farm in black-start operation in which electrical power is fed into the supply network and the supply network is operated thereby, wherein the network frequency is specified by the feeding-in of the electrical power in the black-start mode and/or during black-start operation.

Abstract: A method for supplying electrical power to an electrical supply grid from at least one wind power installation is provided. The supply of electrical power is controlled such that changes in the supplied electrical power are limited based on at least one limit gradient. The at least one limit gradient specifies a magnitude of a maximum change of the supplied electrical power. The least one limit gradient is set based on a property and/or an instantaneous state of the supply grid.

Abstract: A method for operating a wind turbine is disclosed. The rotational speed and power of the wind turbine are reduced when the prevailing wind speed exceeds a predetermined first limit value. The rotational speed and power are reduced further with an increasing wind speed until the rotational speed reaches a predetermined minimum rotational speed and/or the power reaches a predetermined minimum power. The wind energy turbine maintains the minimum rotational speed, or the minimum power, if the wind speed increases even further.

Abstract: A method for operating a wind turbine comprising an aerodynamic rotor with an approximately horizontal axis of rotation, an electrical generator and operating devices is disclosed, wherein the wind turbine is intended for feeding electrical energy into an electrical supply grid, and is kept in a starting state for starting the generator while the wind turbine cannot be completely put into operation, in particular the generator cannot be started.

Abstract: An electric vehicle charging station is provided. The electric vehicle charging station includes an interface, by way of which the charging station receives energy from an electrical energy supply grid, an energy intermediate storage device for intermediate storage of energy received or transmitted by way of the interface from the electrical energy supply grid, a plurality of output connections for charging electric vehicles and a control unit for controlling the energy intermediate storage in the energy intermediate storage device and for controlling the delivery of energy by way of the plurality of output connections. The control unit is configured to pass energy from the energy intermediate storage device to the plurality of output connections when the energy drawn at the output connections cannot be made available completely using the interface to the electrical energy supply grid.

Abstract: A synchronous generator rotor pole pack having a plurality of pole pack laminations which are offset with respect to one another, a pole shank, a pole head with at least three pole head sections is provided. A front edge of each of the at least three pole head sections is arranged at an angle with respect to the pole shank.

Abstract: A trailing-edge segment of a wind-turbine rotor blade for increasing a profile depth of the rotor blade of a wind turbine. The trailing-edge segment of a wind-turbine rotor blade comprises at least one inner blade segment, having an inner blade shell, at least one middle blade segment, having a middle blade shell. In this case, the at least one middle blade segment and the at least one inner blade segment can be coupled to each other via a coupling means, and the coupling means has at least one shell element, having two inner sides that are parallel to each other and form a receiving space, designed to receive at least one of the inner blade shell or middle blade shell, and the two inner sides each being realized such that they can be connected to at least one of the inner blade shell or middle blade shell, in such a manner that a force acting upon the trailing-edge segment of a wind-turbine rotor blade is introduced centrically into the coupling means.

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 blade for a wind turbine having an airfoil with a thickness of at least 20% and in particular at least 25% including a vortex generator pair between chord wise position 20% c and 70% c, the vortex generator pair including 2 not directly connected fins and a base which interconnects the fins and where the fins are placed under opposite angles of attack. The fins are cambered by at least 1% in particular by at least 2% and more particularly by a least 3% of the fin chord. According to an embodiment the base of the vortex generator pair is W-shaped, the fins of a pair are designed to generate contra rotating vortices and the distance between the suction sides of the fins is approximately 150% of that between the pressure sides and the trailing part of the fins is rounded so that non-concentrated vortices are generated.

Abstract: A method for applying a serrated rear edge to a blade rear edge of a rotor blade of a wind turbine that has a pressure side and a suction side.

Abstract: A rotor blade of a wind turbine. The rotor blade comprises at least one rotor-blade inner portion, having a region connecting to the rotor-blade hub, and at least one rotor-blade outer portion, having a rotor-blade tip, the rotor-blade inner portion and the rotor-blade outer portion each being made substantially of a fibre-reinforced plastic, and the rotor-blade inner portion and the rotor-blade outer portion being connected to each other by a connecting device. The connecting device in this case comprises an inner insert that is at least partially wrapped in the fibre-reinforced plastic of the rotor-blade inner portion, an outer insert that is at least partially incorporated in the fibre-reinforced plastic of the rotor-blade outer portion, the inner insert and the outer insert being connected to each other via a connecting element.

Abstract: The invention concerns a method of operating a wind power installation in which the rotor is brought to a halt and fixed, comprising the steps: braking the rotor, positioning the rotor at a stopped position, and fixing the rotor in the stopped position. According to the invention it is provided that an end position is predetermined, the rotor is braked in regulated fashion to a stopped position associated with the end position, and for positioning for the predetermined end position the rotor is braked in an automated procedure until stopped at the stopped position, and for fixing in the stopped position a mechanical fixing device is applied, in particular automatically.

Abstract: A wind turbine having a nacelle with a stationary region and a rotor, at least one blocking unit for blocking the rotor, and an access control system is provided. The access control system controls a locking of at least one access door to at least one closed-off region in the wind turbine depending on a blocking of the rotor by means of the least one blocking unit. The access control system has a key transfer system and a hydraulic control unit for controlling the blocking unit. The key transfer system has a hydraulic key unit for preventing an unintentional activation of the hydraulic unit and an access door key unit for locking or unlocking the access door.

Abstract: A method for feeding electric energy into an electric power supply network by means of a wind turbine, wherein the wind turbine generates electric power from wind having a variable wind speed by means of an aerodynamic rotor and a generator and feeds it at least partially into the electric power supply network and/or uses it at least partially for supplying electric devices of the wind turbine, wherein the generated electric real power is set as function of an ambient temperature and/or wherein the rotor has a variable rotational speed and the rotational speed is set as a function of the ambient temperature.

Abstract: An adjusting device for adjusting a yaw position of a nacelle of a wind turbine, comprising a circumferential holed flange provided with drilled holes, and at least one adjusting means, having a gripping portion for gripping on the holed flange, a fastening portion for fastening to an anchorage point of the wind turbine, and a linear drive for exerting a linear movement between the gripping portion and the fastening portion, wherein the holed flange is fixedly connected to the nacelle, and the anchorage point is fixedly connected to stationary part of the wind turbine, in particular a wind turbine tower, or vice versa, and the nacelle is mounted so as to be rotatable relative to this stationary part of the wind turbine, such that the holed flange and the anchorage point can also execute a rotational movement relative to each other, such that a linear movement exerted between the gripping portion and the fastening portion by the linear drive effects a rotational movement between the holed flange and the anchor