The present invention relates to a nacelle for a wind turbine, consisting of a machine support and a cladding, the nacelle cladding being fastened to the machine support. The nacelle cladding comprises at least one film, the cladding being to some extent formed by said film. The aim of the invention is to provide an improved nacelle cladding. In particular, the improved nacelle cladding should have high strength and be lightweight.
F03D 11/00 - Détails, parties constitutives ou accessoires non couverts par les autres groupes de la présente sous-classe ou présentant un intérêt autre que celui visé par ces groupes
The invention relates to a rotor shaft for a wind turbine. The rotor shaft comprises a flange for accommodating a rotational movement from a hub of a rotor of the wind turbine, an output for deriving a rotational movement, for example in a gear, a shank and an intermediate section. The flange is connected to the shank via the intermediate section, and the shank is in turn connected to the output. Such a rotor shaft is substantially hollow in design. A bearing surface for supporting the shank on a main bearing of the wind turbine is located on the outer surface of the shank. The bearing surface is distanced at an effective bearing distance from a flange surface of the flange in an axial direction and is arranged on an area of the shank adjacent to the intermediate section. A problem addressed by the invention is that of providing a rotor shaft which can be produced cost-effectively and, in spite of this, meets the high requirements of the wind energy sector in respect of quality and homogeneity of the material. The problem is solved by the rotor shaft being substantially made of a metallic cast material and having an inner surface facing inwards at its end faces in a radial direction and an outer surface facing outwards. The outer surface of the intermediate section is curved in a concave manner in a section plane spanned by the radial direction and axial direction, particularly with at least one outer radius, and the inner surface of the intermediate section is designed so as to be curved in a convex manner in the section plane, particularly with at least one inner radius. The outer surface and inner surface of the intermediate section are thus substantially continuous. The intermediate section or the radii of the intermediate section are designed geometrically such that a maximum stress at each point of the rotor shaft is always below the yield point defined for the cast material (Rp, 0.2). The maximum stress in the component is calculated using a load profile specified for the rotor shaft.
The invention relates to an adjusting device for a rotor blade (pitch drive) of a rotor of a wind turbine. The wind turbine comprises a tower, a nacelle rotatably supported on the tower, a drive train arranged in the nacelle, and a rotor. The rotor is arranged on the drive train and comprises a hub and at least one rotor blade rotatably supported on the hub. The blade adjustment of a wind turbine is used for power control and to shut down the system. By adjusting the angle of attack of the rotor blade, the area of the rotor blade against which wind flows can be varied, and thus the power transferred from the wind to the drive train of the wind turbine is changed. In order to guarantee the function of a wind turbine, a blade angle adjustment of approximately 100° is required. The adjusting device comprises a belt transmission having a drive and comprises at least one belt.
F03D 7/02 - Commande des mécanismes moteurs à vent les mécanismes moteurs à vent ayant l'axe de rotation sensiblement parallèle au flux d'air pénétrant dans le rotor
4.
CONNECTING DEVICE FOR A LIGHTNING PROTECTION SYSTEM OF A WIND TURBINE
The invention relates to a connecting device for connecting a first lightning protection conductor, which can be rigidly connected to a rotor blade of a wind turbine, to a second lightening protection conductor, which is fixed to a rotor hub of the wind turbine. The invention also relates to a wind turbine comprising such a connecting device. The connecting device comprises a first and a second transmitting means. The first transmitting means is non-rotatably mounted on the rotor blade and is connected to a first lightening protection conductor arranged in the rotor blade, and the second transmitting means is connected to a second lightening protection conductor arranged on the rotor hub. The second transmitting means is arranged so as to be movable in a rotatable manner about a rotational axis running parallel to a longitudinal axis of the rotor blade but is simultaneously secured such that the two transmitting means cannot move relative to each other in the radial or axial direction of the rotational axis.
F03D 11/00 - Détails, parties constitutives ou accessoires non couverts par les autres groupes de la présente sous-classe ou présentant un intérêt autre que celui visé par ces groupes
H02G 13/00 - Installations de paratonnerresFixation de ceux-ci à leur structure de support
5.
COLLECTING DEVICE FOR A LIQUID OF A DRIVE TRAIN COMPONENT
The invention relates to a collecting device for collecting and monitoring a liquid exiting a drive train component of a wind turbine, to a wind turbine comprising such a collecting device, and to a method for retrofitting such a collecting device into new wind turbines and wind turbines which are already available. The wind turbine comprises a tower, a machine housing which can be rotatably arranged on the tower, a drive train which is arranged in the machine housing, and a rotor which can be connected to the drive train, said rotor comprising a hub and rotor blades which can be rotatably arranged on the hub.
F03D 11/00 - Détails, parties constitutives ou accessoires non couverts par les autres groupes de la présente sous-classe ou présentant un intérêt autre que celui visé par ces groupes
6.
SAFETY CHAIN AND METHOD FOR OPERATING A WIND TURBINE
The invention relates to a blade adjusting device (P1, P2, P3) for a rotor blade (6) of a rotor (5) of a wind turbine (2). The blade adjusting device comprises an adjusting motor (9) for driving and/or fixing the rotor blade, a converter (12) for activating the adjusting motor, a battery (21) for providing an emergency power supply for the blade adjusting device and a control unit (13) for activating the converter. Integrated in the control unit is an internal safety chain (23) for monitoring the functions and/or components of the blade adjusting device. The blade adjusting devices of the rotor blades are connected to a plant safety chain (1) and can open and close the plant safety chain by activating a switch. If a fault is detected in one of the blade adjusting devices, the respective control unit can open the plant safety chain. By opening the safety chain, a signal is sent to the blade adjusting devices, and so all the blade adjusting devices initiate a synchronous safety operation of at least two rotor blades when the signal is received. The invention also relates to a method for operating a wind turbine.
F03D 7/02 - Commande des mécanismes moteurs à vent les mécanismes moteurs à vent ayant l'axe de rotation sensiblement parallèle au flux d'air pénétrant dans le rotor
The invention relates to an adjusting device for a rotor blade of a rotor of a wind turbine. The rotor comprises a hub, a rotor blade, a bearing that can be installed between the rotor blade and the hub, and the adjusting device. The rotor blade is arranged on the hub so as to be rotatable substantially about the longitudinal axis of the rotor blade. The rotor blade can be set in different adjustment positions by means of the adjusting device. The adjusting device comprises at least one electric adjusting motor, which drives a gear connected to the rotor blade by means of a drive pinion, a converter, which is coupled to an electric network and controls the adjusting motor, and a control unit for controlling the adjusting motor. In order to monitor the adjustment position of the rotor blade, the adjusting device comprises means for producing a signal that depends on the adjustment position of the rotor blade and an evaluating unit for comparing the signal or a derivative of the signal. The invention further relates to a method for adjusting a rotor blade of a wind turbine.
F03D 7/02 - Commande des mécanismes moteurs à vent les mécanismes moteurs à vent ayant l'axe de rotation sensiblement parallèle au flux d'air pénétrant dans le rotor
F03D 11/00 - Détails, parties constitutives ou accessoires non couverts par les autres groupes de la présente sous-classe ou présentant un intérêt autre que celui visé par ces groupes
8.
SIMULATION MODEL FOR A WIND POWER INSTALLATION, AND PRODUCTION AND USE THEREOF
Method for producing a software simulation model for a wind power installation for integration into a power supply system simulation model for simulating the wind power installation in the system complex, software simulation model, simulation of a power supply system and associated computer program product, data storage medium and datastream. The production method contains at least one definition step, in which at least one model element having at least two model element input variables and at least one model element output variable is defined in a system model of the wind power installation, and a customization step, in which model parameters of an emulation system are customized such that the emulation system can emulate the behaviour of the model element with a predetermined accuracy. The software simulation model contains at least one model element with a model element transfer function between at least two input variables and at least one output variable, wherein the at least one model element preferably has, as an emulation system, a fuzzy interference system that is adjusted by means of model parameters for the purpose of emulating the model element transfer function.
The invention relates to a hub for a rotor of a wind turbine, wherein the rotor comprises the hub, at least one rotor blade which is rotatably mounted about a blade axis, and a bearing which can be installed between the hub and rotor blade. The bearing comprises two rings, wherein the first ring can be installed on the hub and the second can be installed on the rotor blade. The hub comprises at least one flange for supporting the first ring, the flange being oriented radially to a blade axis, and at least one further flange for receiving a rotor shaft. The function of the bearing is to transmit forces exerted by the wind on the rotor blades to the hub of the rotor. However, because the hub is relatively flexible and thus insufficiently supports the bearing, the external forces may cause the bearing to become deformed. In the long run, the deformation results in overloading of the bearing, which can manifest itself, for example in a rolling bearing, in damage to the track, wear of the rolling body guide cages, and failure of the bearing seal. In order to reduce the deformation of the bearing, the hub is thus designed with supporting means to radially support the bearing.
F03D 11/00 - Détails, parties constitutives ou accessoires non couverts par les autres groupes de la présente sous-classe ou présentant un intérêt autre que celui visé par ces groupes
10.
METHOD FOR DETERMINING OPERATIONAL STATES OF A WIND TURBINE AND WIND TURBINE
The invention relates to a method for determining the rotational speed of the rotor of a wind turbine and/or for monitoring the state of a rotor blade of a wind turbine, comprising the following method steps: measuring the current of at least one blade adjustment motor of a wind turbine over a predetermined period of time, characterized in that the rotational speed of the rotor is determined by ascertaining the period of oscillation of the motor current, and the rotor position is determined by way of zero point evaluation and gradient evaluation, and/or the state of the rotor blade is determined with the aid of a time or frequency analysis of the motor current of at least one blade adjustment motor.
F03D 7/02 - Commande des mécanismes moteurs à vent les mécanismes moteurs à vent ayant l'axe de rotation sensiblement parallèle au flux d'air pénétrant dans le rotor
F03D 11/00 - Détails, parties constitutives ou accessoires non couverts par les autres groupes de la présente sous-classe ou présentant un intérêt autre que celui visé par ces groupes
11.
DEVICE AND METHOD FOR MOUNTING A ROTOR ON THE DRIVE TRAIN OF A WIND TURBINE
The invention relates to a lifting device for mounting a rotor on the drive train of a wind turbine, the rotor comprising a hub, rotor blades fastened to the hub and receiving means fixed to the hub. The lifting device is designed as a self-closing lifting tong, said lifting tong having a first lever and a second lever which are interconnected via a pivot. At least the first lever is subdivided into a tension arm and a gripping arm by virtue of the arrangement of the pivot, the tension arm, comprising a hitching point for a cargo lifter, e.g. a crane. The second lever comprises at least one gripping arm. An end section of the two gripping arms is designed as a fastening means so that the end sections of the gripping arms can engage in a receiving means in a hub of the rotor when the rotor is mounted. Furthermore, the geometry of the first lever, the second lever, the pivot and the hitching point is chosen such and they are arranged relative each other such that, owing to the effect of the weight force of the rotor, a form-locking and/or friction-locking connection can be produced between the lifting device and the rotor, the connection being effective in a position of lift, in a position of mounting and in an intermediate position. The invention also relates to a hub of a wind turbine, to a wind turbine, to a system for mounting a wind turbine and to a method for mounting a wind turbine.
F03D 1/00 - Mécanismes moteurs à vent avec axe de rotation sensiblement parallèle au flux d'air pénétrant dans le rotor
B66C 1/44 - Organes de saisie engageant uniquement les faces externes ou internes des objets et leur appliquant des forces de friction
B66C 1/66 - Éléments ou dispositifs de prise de la charge adjoints aux mécanismes de levage, de descente ou de halage, ou adaptés pour être utilisés avec ces mécanismes et transmettant les efforts à des articles ou à des groupes d'articles par moyens mécaniques comportant des organes de saisie ayant une forme complémentaire de celle des objets à manipuler s'engageant dans des trous, des évidements ou des renflements spécialement aménagés sur les objets pour en permettre la prise
The invention relates to a wind turbine comprising an electromagnetically shielding nacelle cover, to a nacelle cover having an electromagnetically shielding effect, to an element for a nacelle cover that is composed of a plurality of elements, and to a method for producing such an element for a nacelle cover of a wind turbine. The aim of the invention is to provide a nacelle cover for a wind turbine which offers a solution to the problems mentioned in the prior art. Said aim is achieved by a nacelle cover for a nacelle of a wind turbine according to claim 1. The nacelle cover is formed of a composite material which can comprise, for example, an outer layer made of a fiber material or fiber mats such as glass fiber mats and an interposed foam layer. A conductor layer, for example a mesh, a woven fabric or a coating made of conductive material is integrated between the fiber layers of the composite material to provide electromagnetic shielding of the nacelle. The conductor layer is also connected, or can be connected, directly or indirectly, to at least one conductive construction that is fitted on the outside of the nacelle cover.
F03D 11/00 - Détails, parties constitutives ou accessoires non couverts par les autres groupes de la présente sous-classe ou présentant un intérêt autre que celui visé par ces groupes
The invention relates to a tower for a wind turbine and to a cable guide for a tower of a wind turbine, wherein a machine housing for the wind turbine is arranged on the tower such that it can rotate by means of the azimuth bearing about a vertical axis which runs in the longitudinal direction of the tower. Current-carrying cables, such as power cables, are routed in the tower of the wind turbine out of the machine housing from electrical components to the ground. These comprise a multiplicity of cables, for example a plurality of cables for electrically carrying individual phases of alternating current, in particular three-phase alternating current, cables for ground conductors and/or signal and control cables. One object of the invention is to specify improved routing of the cables which, inter alia, avoids the disadvantages of the prior art. One particular aim is to ensure that the current load capacity of the cables is ensured, and/or that wear between the cables is reduced. According to the invention, the object is achieved by the features of the main claim 1, by the tower having at least two looming apparatuses, which are suitable for joining the individual cables which run longitudinally in the tower together to form a cable loom with the cables fixed with respect to one another. The looming apparatuses are attached to the cables between an upper and a lower area of the cable loom. In this case, geometric configuration of the looming apparatus ensures that a specific minimum separation at least between three cables is not undershot.
F03D 11/00 - Détails, parties constitutives ou accessoires non couverts par les autres groupes de la présente sous-classe ou présentant un intérêt autre que celui visé par ces groupes
The invention relates to a tower for a wind turbine and to a cable guide for a tower of a wind turbine, wherein a machine housing for the wind turbine is arranged on the tower such that it can rotate by means of the azimuth bearing about a vertical axis which runs in the longitudinal direction of the tower. Current-carrying cables, such as power cables, are routed in the tower of the wind turbine out of the machine housing from electrical components to the ground. These comprise a multiplicity of cables, for example a plurality of cables for electrically carrying individual phases of alternating current, in particular three-phase alternating current, cables for ground conductors and/or signal and control cables. One object of the invention is to specify improved routing of the cables which, inter alia, avoids the disadvantages of the prior art. One particular aim is to ensure that the current load capacity of the cables is ensured, and/or that wear between the cables is reduced. According to the invention, the object is achieved by the features of the main claim 1, by arranging a guide apparatus effectively between the cable loom and the tower, in the tower, for at least partial fixing of the area of the cable loom to the tower, wherein the guide apparatus has means for supporting the lower area of the cable loom in a radial direction, and for support with respect to the tower in a circumferential direction. In this case, the guide apparatus is designed such that the lower area of the cable loom is mounted such that it can move in the axial direction with respect to the tower, but is essentially fixed with respect to the tower in the circumferential and radial directions.
F03D 11/00 - Détails, parties constitutives ou accessoires non couverts par les autres groupes de la présente sous-classe ou présentant un intérêt autre que celui visé par ces groupes
The present invention relates to an anchoring system for a steel tube tower of a wind turbine. The anchoring system (1) according to the invention is designed to clamp a wind turbine directly or indirectly against a base (15) for a wind turbine and comprises a tower (10) or a lower tower segment which has, at least at its lower end, a flange (14), at least one clamping element (19, 21) and an attachment device (30). The flange here has an underside facing the base in the mounted state and an upper side facing away from the base as well as an end face which runs in the circumferential direction around the flange and connects the upper and lower sides. The attachment device is embodied according to the invention as a clamping claw or collet chuck, and in the mounted stated it is connected directly or indirectly to the base via the clamping element in such a way that it transmits a pressing force which acts on the upper side of the flange, and is directed vertically downwards, i.e. in the direction of the base, by which pressing force the flange of the tower is clamped against the base of the wind turbine.
The invention relates to a control unit for controlling at least one control component. Such a control component can be a converter of a drive device for a rotor blade of a wind turbine. The rotor blade is arranged rotatably substantially about the longitudinal axis thereof on a hub of the wind turbine. The control unit comprises at least one input and/or output for electric signals, wherein the control unit can be electrically connected via the input and/or output to the control component and/or an additional component, in particular a measuring or sensor unit. This way, electric control and/or status signals can be transmitted between the control unit and the control component and/or between the control unit and the additional component. It is the aim of the invention to provide an improved control unit that avoids, inter alia, the disadvantages of the prior art. In particular, the aim is to increase the fault tolerance. The aim is achieved according to the invention by the features of the main claim 1 in that a protective circuit comprising an electrically isolating transfer element is effectively arranged on at least one input and/or output of the control unit. Said protective circuit is arranged between the control unit and the control component and/or between the control unit and the additional component such that the control unit and the control component and/or the control unit and the additional component can be arranged electrically isolated from one another. The effect of this is that a potential overvoltage of a component can no longer be transferred to the control unit. It is thus protected from destruction.
F03D 7/02 - Commande des mécanismes moteurs à vent les mécanismes moteurs à vent ayant l'axe de rotation sensiblement parallèle au flux d'air pénétrant dans le rotor
The invention relates to a drive unit for a wind turbine, wherein a rotor of the wind turbine is mounted rotatably to a mainframe. The rotor comprises a hub and at least one rotor blade fastened thereto. The drive unit comprises a gear system for converting the rotational speed of the rotor according to a desired gear ratio. The gear system, a planetary gear system, comprises at least one ring gear, a planet carrier, at least two planet wheels, a sun gear, and an output shaft. The wheels of the gear system are preferably designed as gear wheels. Because the sun gear is connected to an output shaft, the rotational energy can be coupled into a generator. It is the aim of the invention to provide a drive unit of a wind turbine that avoids the disadvantages of the prior art. In particular favorable and simple mounting for a rotor of a wind turbine having a robust and cost-reduced drive unit is to be implemented. The aim is achieved by a drive unit having the characteristics of the main claim. One of the characteristics that the invention comprises is that the drive unit has a substantially horizontal rotor axis for rotatably mounting the rotor. Said rotor axis can be indirectly or directly rigidly connected to the mainframe. In such a way, for the first time the advantage is achieved that the forces and loads of the rotor are directly introduced into the mainframe, and the main power flow does not take place in the surroundings of the gear system and cannot lead to harmful deformations there. In addition, the mounting can be done on a central, journal-like rotor axis using smaller and less expensive bearings.
The invention relates to a wind turbine comprising a rotor, wherein the rotor is mounted on a substantially horizontal rotor axis rotatably about a rotational axis. The rotor comprises a hub and preferably three rotor blades fastened thereto. Advantageously, but not necessarily, the rotor blades are mounted rotatably about the longitudinal axes thereof on the hub, whereby the angle of attack of the rotor blades can be varied. The hub is attached rotatably on the rotor axis directly or via a connecting component, wherein the rotor axis in turn is rigidly connected to a mainframe of the wind turbine. The mainframe accommodates the nacelle housing and the components present therein. In addition, the mainframe is mounted rotatably on a tower of the wind turbine by means of the so-called azimuth bearing. The rotor is non-rotationally connected to output means, for example a gear or a generator. The aim of the invention is to provide a wind turbine that avoids the disadvantages of the prior art, wherein in particular a simple, lightweight and cost-effective design of the drive train is to be made possible. The aim is achieved by the characteristics of the main claim 1, wherein decoupling connecting means are arranged in an effective manner between the output means and the rotor. Said means have the effect that the rotor can only transmit peripheral forces or torque to the output means. Otherwise, the rotor and output means are substantially decoupled with respect to the transmission of translatory motions, in particular radial, axial or tilt motions, in a certain range.
The present invention relates to a bearing assembly for a wind turbine (2), wherein the bearing assembly has two bearing elements (9, 12), which are disposed rotatably about a common axis (5) in relation to each other. A slideway lining (17) acting in an axial direction (7) is provided between the bearing elements. The aim of the invention is to provide a bearing assembly for a wind turbine, which among others avoids the disadvantages of the prior art. In particular, a maintenance-friendly and force flow-optimized assembly of the slideway linings is to be enabled. The replaceability of the slideway linings is to be improved in a simple and cost-effective manner by disposing the individual slideway linings in pockets (20) between the two bearing elements, wherein the pockets are provided in the material of the mainframe. Additionally, the option exists to use the bearing assembly at the same time as an active brake.
F16C 17/10 - Paliers à contact lisse pour mouvement de rotation exclusivement à la fois pour charges radiales et axiales
F03D 11/00 - Détails, parties constitutives ou accessoires non couverts par les autres groupes de la présente sous-classe ou présentant un intérêt autre que celui visé par ces groupes
F16C 33/26 - CoussinetsBaguesGarnitures antifriction constitués de bobines de filsCoussinetsBaguesGarnitures antifriction constitués d'un certain nombre de disques, anneaux, tiges ou autres organes
The invention relates to a lifting device for a rotor of a wind turbine, consisting of a turbine hub and rotor blades fixed thereon, having the following components: at least one receiving device which can be fixed to a blade root region of the rotor; guiding means which can be attached to the receiving device and which has at least one supporting element for receiving and fixing wire supports, wherein the supporting element is connected to the guiding means in a movement-flexible manner such that the rotor is aligned correctly for assembly before being mounted on a rotor shaft of the wind turbine. The aim of the invention is to provide a lifting device for rotors which is easy to assemble and disassemble and which enables the rotor to automatically align into a correspondingly optimal bearing position for assembling onto the turbine hub when undesired torques act on said rotor.
The present invention relates to an asynchronous generator system for a wind turbine, and a wind turbine having such a system, and the method for operating and starting up such a wind turbine. The asynchronous generator system is thereby designed very simply and thus inexpensively and is able to absorb wind gusts and the associated speed increases.
H02P 9/00 - Dispositions pour la commande de génératrices électriques de façon à obtenir les caractéristiques désirées à la sortie
H02P 9/10 - Commande s'exerçant sur le circuit d'excitation de la génératrice afin de réduire les effets nuisibles de surcharges ou de phénomènes transitoires, p. ex. application, suppression ou changement brutal de la charge
F03D 9/00 - Adaptations des mécanismes moteurs à vent pour une utilisation particulièreCombinaisons des mécanismes moteurs à vent avec les appareils qu’ils entrainentMécanismes moteurs à vent spécialement adaptés à l’installation dans des endroits particuliers
H02J 3/01 - Dispositions pour réduire les harmoniques ou les ondulations
H02J 3/24 - Dispositions pour empêcher ou réduire les oscillations de puissance dans les réseaux
H02P 29/00 - Dispositions pour la régulation ou la commande des moteurs électriques, adaptées à des moteurs à courant alternatif et à courant continu
The invention relates to a sealing device for a seam between a rotor blade and a housing of a wind turbine. Modern wind turbines have rotor blades that are mounted on the hub of the rotor in such a way that they can rotate about their longitudinal axis, and the angle of attack of the rotor blade can thereby be adapted according to wind and the required position. There is a seam between the rotor blade and the hub. The aim of the invention is to improve a housing for a wind turbine in such a way that, inter alia, the disadvantages of prior art are avoided. This is achieved by the features of patent claim 1, whereby a sealing device is provided on the seam between the rotor blade and the housing of the spinner or the hub. Said sealing device comprises at least two covering rings. A first covering ring can be connected to the rotor blade in a rotationally fixed manner, and the second covering ring can be connected to the housing in a rotationally fixed manner. The covering rings each comprise a skirt for repelling or catching liquid. When the covering rings are mounted on the rotor blade or on the housing according to the invention, the skirts are arranged in the direct vicinity of each other such that fluid can be essentially prevented from penetrating the seam. The covering rings are arranged on the rotor blade or on the housing such that an essentially tight connection is produced between the covering ring and the rotor blade or the housing.
F03D 11/00 - Détails, parties constitutives ou accessoires non couverts par les autres groupes de la présente sous-classe ou présentant un intérêt autre que celui visé par ces groupes
The invention relates to a housing, especially for using as a spinner for a rotor of a wind turbine. A housing element having an outer surface and an inner surface has an opening to enable access into the housing. A mobile opening element having an outer side and an inner side is provided on the opening, embodied as a door, and a connecting element for coupling the opening element to the housing is applied inside the housing. The aim of the invention is to further develop an extensively improved housing for a spinner of a wind turbine. To this end, inter alia, the assembly is simplified, and the design in terms of the shape of the housing and the material characteristics protects the inside of the turbine and renders the turbine, on the whole, less vulnerable to extreme weather conditions.
F03D 11/00 - Détails, parties constitutives ou accessoires non couverts par les autres groupes de la présente sous-classe ou présentant un intérêt autre que celui visé par ces groupes
The present invention relates to a method for operating a wind turbine connected to a power grid for generating electric energy when a change in the grid voltage occurs, and to a wind turbine for carrying out the method. According to the method, when a deviation of a grid voltage from a certain regular grid voltage range occurs, the current residual grid voltage is measured, the current wind speed is measured, depending on the value of the residual grid voltage a certain time period is defined starting with the detection of the change in grid voltage, and the wind turbine is operated within the defined time period, depending on the value of the residual grid voltage, in a certain operating mode that deviates from regular operation with respect to the effective power, and the wind turbine is operated again in the regular operating mode after the grid voltage has normalized again within the defined time period, or is shut off at the end of the time period if the deviation of the grid voltage persists during the defined time period. According to the invention, voltage ranges are defined for grid voltage values that are not part of the regular grid voltage range, wherein each defined voltage range is associated with a plurality of voltage values and at least one first factor, which is different for each voltage range, for controlling the wind turbine so as to implement the operating mode deviating from the regular operating mode and, depending on the measured wind speed, one of the first factors for controlling the wind turbine is used to implement the deviating operating mode.
H02P 9/10 - Commande s'exerçant sur le circuit d'excitation de la génératrice afin de réduire les effets nuisibles de surcharges ou de phénomènes transitoires, p. ex. application, suppression ou changement brutal de la charge
H02P 9/00 - Dispositions pour la commande de génératrices électriques de façon à obtenir les caractéristiques désirées à la sortie
F03D 9/00 - Adaptations des mécanismes moteurs à vent pour une utilisation particulièreCombinaisons des mécanismes moteurs à vent avec les appareils qu’ils entrainentMécanismes moteurs à vent spécialement adaptés à l’installation dans des endroits particuliers
F03D 7/02 - Commande des mécanismes moteurs à vent les mécanismes moteurs à vent ayant l'axe de rotation sensiblement parallèle au flux d'air pénétrant dans le rotor
The invention relates to a transmission device for a wind turbine. Transmission devices of said kind are used for transmitting or for discharging electrostatic energy between a rotatable rotating device and a grounding device that cannot be rotated with respect to the rotating device. For this purpose, the transmission device comprises a mounting, a sliding contact device having pressing means, and at least one electrode having adjusting means for transmitting lightening current. The electrode can form a spark gap having a sparking distance S together with a ring electrode, wherein the ring electrode can be arranged on the rotating device, or can be connected to a grounding device that cannot be rotated with respect to the rotating device. Known embodiments have the disadvantage that the lightning current transmission does not function reliably. The aim of the invention is to provide an improved transmission device for a wind turbine, wherein in particular the reliability and durability of the transmission device are to be improved. According to the invention, said aim is achieved by the characteristics of the main claim 1, in that the mounting is arranged rotationally fixed on the rotating device or in a non-rotating manner with respect to the grounding device. Furthermore, the electrode is arranged in a moveable manner with respect to the mounting by means of a tracking device having support means. The electrode is supported by way of the support means with respect to the rotating device or the ring electrode such that the sparking distance S cannot fall below a minimum dimension.
F03D 11/00 - Détails, parties constitutives ou accessoires non couverts par les autres groupes de la présente sous-classe ou présentant un intérêt autre que celui visé par ces groupes
The invention relates to a drive device (1) for a rotor blade (9) of a wind turbine. Said drive unit comprises an asynchronous machine (6) for adjusting the rotor blade, an electrically actuated brake (5) disposed on the drive unit for locking or braking the drive unit, and an electrical supply device (2), by means of which the asynchronous machine can be connected to an alternating current grid. The supply device comprises a rectifier (21), an inverter (23), and an intermediate direct current circuit. A dedicated drive device is typically provided for each rotor blade of a wind turbine. In case of emergency, such as failure of components or the power supply, an emergency operation supply device (35) is generally provided for adjusting the rotor blades to an operationally safe position. A disadvantage thereof is that a plurality of different electrical components is required. The aim of the invention is to disclose an improved drive system for a wind turbine, and a wind turbine having such a drive system, wherein the disadvantages of the prior art are avoided. The aim is achieved according to the invention by the characteristics of the primary Claim 1, in that a direct-current divider (24) is connected to the intermediate circuit, by means of which the brake is electrically supplied. By supplying the brake by means of the intermediate circuit, an additional power source for the brake is no longer necessary, and the brake can be designed particularly simply.
F03D 7/02 - Commande des mécanismes moteurs à vent les mécanismes moteurs à vent ayant l'axe de rotation sensiblement parallèle au flux d'air pénétrant dans le rotor
F03D 11/00 - Détails, parties constitutives ou accessoires non couverts par les autres groupes de la présente sous-classe ou présentant un intérêt autre que celui visé par ces groupes
H05K 7/20 - Modifications en vue de faciliter la réfrigération, l'aération ou le chauffage
The invention relates to a method for monitoring at least one wind turbine and to a device and a system for monitoring at least one wind turbine. The aim of the invention is to provide a method for detecting damage to rotor blades which can be realized in a hardware device which is simple, cost-effective and less susceptible to faults. A further objective is to provide another method for detecting damage to rotor blades. Said objective is achieved by a method comprising the method steps according to claim 1 of the patent application and by a device and a system for monitoring wind turbines according to claims 12 and 14. According to the present invention, the method for detecting damage to rotor blades comprises analysis steps performed exclusively in the time range.
F03D 9/00 - Adaptations des mécanismes moteurs à vent pour une utilisation particulièreCombinaisons des mécanismes moteurs à vent avec les appareils qu’ils entrainentMécanismes moteurs à vent spécialement adaptés à l’installation dans des endroits particuliers
The invention relates to a brake system for a wind turbine having a machine house rotatably mounted in a horizontal plane, at least one stop brake (60) for locking the machine house and an electrical azimuth drive (40), wherein the stop brake (60) is connected to the azimuth drive (40) via means (50) for transferring torque and/or force and/or movement such that it can be activated by means of a torque and/or force and/or movement created by the azimuth drive (40) in order to yaw the machine house.
F03D 7/02 - Commande des mécanismes moteurs à vent les mécanismes moteurs à vent ayant l'axe de rotation sensiblement parallèle au flux d'air pénétrant dans le rotor
The invention relates to a hoisting device (1) for a wind turbine (100), said device being movable on a support track (3) in a machine housing (2) of the wind turbine. The machine housing is rotatably mounted on a tower (101) and supports a rotor and a drive train. Suitable crane systems are needed to supply the required means and tools to the machine housing (2) for servicing and repair purposes. Up to now, chain hoists have been used for small to medium-sized loads, up to approx. 1 tonne, the hooks of which hoists can be lowered through a hatch in the floor of the machine housing. One disadvantage is that the size of the useful load is limited by the size of the floor hatch. According to the invention, a hoisting device for the wind turbine is displaceably provided on the support track in a machine housing of the wind turbine. The support track of the hoisting device runs completely within the machine housing and comprises a roller mechanism and a load arm. The load arm and roller mechanism are designed in such a way that the load arm projects through a substantially vertical wall of the machine housing.
B66C 17/00 - Ponts roulants à chariot transbordeur comportant une ou plusieurs poutres principales sensiblement horizontales dont les extrémités reposent directement sur des roues ou des rouleaux se déplaçant sur une voie soutenue par des supports espacés
The invention relates to a control box (1) for arranging in a rotor hub (12) of a wind turbine (6), that can be rotated about a rotational axis (10). Such control boxes receive electrical components such as relays, inverters, sensors and the like, in the inner region thereof, which is defined by a wall, said components being required for the control of sheet displacement systems, also called pitch systems. Spurious particles can find their way into the control box during maintenance or even via air inlets and outlets. The aim of the invention is to provide a control box for a wind turbine, wherein the fault tolerance of the control box is increased. To this end, according to the features of claim 1, the catching device in the control box has a cavity for receiving spurious particles and an opening for the entrance of spurious particles into the cavity (32). This causes the spurious particles (19) to be collected by the catching device (30) only by means of gravity and the rotation of the rotor hub. Furthermore, the cavity ensures that the spurious particles caught are held in the catching device.
F03D 11/00 - Détails, parties constitutives ou accessoires non couverts par les autres groupes de la présente sous-classe ou présentant un intérêt autre que celui visé par ces groupes
31.
WIND ENERGY INSTALLATION WITH ENHANCED OVERVOLTAGE PROTECTION
Wind energy installation and method for production of electrical energy from wind energy by means of the wind energy installation having a rotor which can be driven via wind power and has rotor blades whose pitch angles can be adjusted by means of at least one adjusting apparatus, which can be driven electrically, in order to influence the rotational speed of the rotor, wherein a generator rotor is connected to the rotor, and the generator rotor together with a stator forms a generator, and wherein a magnetic field which rotates with respect to the generator rotor is produced by the stator and, by interaction with the generator rotor, which is stationary with respect to the pod, induces a current flow in the generator rotor in order to operate the adjusting apparatus.
F03D 7/02 - Commande des mécanismes moteurs à vent les mécanismes moteurs à vent ayant l'axe de rotation sensiblement parallèle au flux d'air pénétrant dans le rotor
F03D 11/00 - Détails, parties constitutives ou accessoires non couverts par les autres groupes de la présente sous-classe ou présentant un intérêt autre que celui visé par ces groupes
The invention relates to a locking mechanism for a wind turbine in which a rotor shaft of a drive train is rotatably mounted on a machine support of the wind turbine while the rotor shaft can be connected to a rotor. In order to be able to do maintenance work on the wind turbine, the locking mechanism comprises locking means, especially with a movable locking bolt, which makes it possible to establish a rotationally fixed positive connection between the rotor or the rotor shaft and the machine support. In order to do so, a rotational position of the rotor shaft can automatically be detected in a DESIRED position, and the locking means can be automatically engaged when said DESIRED position has been reached. The disclosed mechanism additionally comprises at least one decelerating device for affecting the drive train, thus allowing the rotational speed of the rotor and the rotor shaft to be reduced. One aim of the invention is to design an improved locking mechanism which overcomes the drawbacks of the prior art, among other things. Said aim is achieved by means of the features of main claim 1, sensor means being provided for detecting a rotational speed of the rotor shaft. The mechanism according to the invention for the first time makes it possible to estimate or calculate the required braking force and/or the braking distance of the deceleration device by comparing the current position of the rotor shaft with the DESIRED position once the rotational speed is known, thus allowing the rotor shaft to be safely, gently, and accurately decelerated to a standstill in the DESIRED position.
F03D 7/02 - Commande des mécanismes moteurs à vent les mécanismes moteurs à vent ayant l'axe de rotation sensiblement parallèle au flux d'air pénétrant dans le rotor
The invention relates to a bearing arrangement, especially for a wind turbine, for transmitting radial and axial forces, two bearing partners being provided that are twistable relative to one another about an axis. The bearing partners each comprise a support area, between which a bearing block is arranged to be insertable in an actuating direction in order to generate a normal force that acts upon the support areas. The bearing block is connected in a rotationally fixed manner to one of the bearing partners. The aim of the invention is to design an improved bearing arrangement which overcomes the drawbacks of the prior art. In particular, the aim is to design a wear-resistant and maintenance-friendly bearing arrangement for an azimuth bearing of a windturbine. Furthermore, an optional aim of the invention is to make it possible to simultaneously use the bearing arrangement as an active brake. Said aim is achieved by the features of independent claim 1, according to which a friction lining is disposed between the bearing block and the bearing partner that can be twisted relative to the bearing block. For the first time, this design makes it possible to represent a support of a bearing ring and a bearing rim, the bearing clearance being easy to adjust.
F03D 11/00 - Détails, parties constitutives ou accessoires non couverts par les autres groupes de la présente sous-classe ou présentant un intérêt autre que celui visé par ces groupes
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