Repower Systems Ag

Senvion Se

Fos4x Gmbh

Repower Systems Se

Senvion Gmbh

Matthias Schubert

Urs Bendel

Mathias Müller

Carsten Eusterbarkey

Peter Quell

Florian Rieger

Thomas Schauss

Manuel Mai

Mathias Muller

A method for the individual pitch control of the rotor blades of a wind turbine is provided herein. In some embodiments, the method includes measuring an acceleration by an acceleration sensor in a rotor blade of the wind turbine; high-pass filtering of a signal of the acceleration sensor in order to determine a time-variant variable; and setting the pitch of the first rotor blade of the wind turbine using the time-variant variable, the pitch setting being part of an individual pitch control.

Method for the individual pitch control of rotor blades of a wind turbine, and wind turbines

A method for monitoring a wind turbine is described. The method comprises measuring acceleration by means of a fiber-optic acceleration sensor in a rotor blade of the wind turbine; opto-electronically converting an acceleration signal of the fiber-optic acceleration sensor; and filtering the opto-electronically converted acceleration signal by means of an analog anti-aliasing filter.

Method for monitoring a wind turbine, method for identifying ice on a wind turbine, acceleration sensor for a rotor blade, rotor blade comprising an acceleration sensor, and profile for a rotor blade

A wind farm comprises a plurality of wind turbines connected to a network internal to the wind farm, a network feed-in point in the network internal to the wind farm for feeding electrical power into a supply network, a control device associated with the network feed-in point designed to control the wind turbines feeding power into the supply network by the network feed-in point on the basis of measured values recorded at the network feed-in point, and at least one additional network feed-in point having an additional control device designed to control the wind turbines feeding power into the supply network by the additional network feed-in point on the basis of measured values recorded at the additional network feed-in point, wherein the network internal to the wind farm is designed to variably connect at least one wind turbine to one of the plurality of network feed-in points.

Wind farm having a plurality of network feed-in points

A wind energy installation includes a tower and a nacelle arranged at the top of the tower such that it can swivel in the azimuth direction. The installation also includes a plurality of cables which are guided via a loop from the tower into the nacelle, the cables being held at a distance from one another in the loop by means of rotationally fixed and loose holders. The holders each have receptacles for attachment of the cables with a predetermined circumferential separation. The holders include a lower rotationally fixed guide ring and an aligning upper loose guide ring. A loop guide is formed such that the loop is subdivided by means of the rotationally fixed lower guide ring into a curved untwisted area and an extended twisted area.

Wind energy plant having a twistable nacelle cable guide

A tubular tower (), of a wind energy plant () with a current conduction means system () for transmitting electrical power from a generator on the tower (), to a power module at the base of the tower. The current conduction means system () has three electrical conductors () arranged next to one another. A housing () is connected to the inner tower wall at predetermined distances using connecting devices which have electrical cross-sections conducting with the tower wall. The distances between the connecting devices in the longitudinal extent of the tower () and the cross-sections of the connecting devices between the housing () and the tower wall are dimensioned such that during a fault, the voltage drop between the tower wall and the housing () does not exceed a predetermined touch voltage.

Tower of a wind energy installation with current conduction means

The invention relates to a rotor blade for wind energy installation, comprising at least one flange running in a longitudinal direction from a rotor blade root to a rotor blade tip, whereby a width of the flange decreases along the longitudinal direction. The invention also relates to a method for producing a rotor blade in that at least one flange with a width decreasing in the longitudinal direction is applied to a rotor blade inner wall, and to a laying assistance device for positioning strips of the flange.

Rotor blade and method for producing same

A rotor blade attachment, in particular of a wind power plant, for the connection of a rotor blade with an attachment device, including a transverse pin and a connecting device, which can be brought together to establish an operative connection, wherein the connecting device defines a longitudinal axis. The rotor blade attachment is characterized in that the transverse pin in the direction of the longitudinal axis of the connecting device has a higher bending stiffness than transversally to the longitudinal axis. An alternative rotor blade attachment is characterized in that the transverse pins are arranged in at least two rows, wherein at least a first row is arranged closer to the blade-root-side end of the rotor blade than at least a second row.

Rotor blade attachment

The invention relates to a rotor blade attachment (), in particular of a wind power plant (), for the connection of a rotor blade () with an attachment device (), including a transverse pin (') and a connecting device (), which can be brought together to establish an operative connection, wherein the connecting device () defines a longitudinal axis. The rotor blade attachment () is characterized in that the transverse pin (&#x2032;) in the direction of the longitudinal axis of the connecting device has a higher bending stiffness than transversally to the longitudinal axis (). An alternative rotor blade attachment () is characterized in that the transverse pins (&#x2032;) are arranged in at least two rows (), wherein at least a first row () is arranged closer to the blade-root-side end () of the rotor blade () than at least a second row (). Another rotor blade attachment () is characterized in that the transverse pin (&#x2032;) is completely encapsulated by the rotor blade ().

Reduction in power output or rotor speed of a wind turbine above a defined limit value, the reduction not being implemented based on the measured wind speed, but on an input value which on one hand is easily detected physically and by control technology and on the other hand is a good indicator of mechanical stresses on the wind turbine. The invention uses the rotor-blade angle as the input value in a manner that starting at the limit value, the reduction in power output or in rotor speed is adjusted as a function of the rotor-blade angle.

Method for controlling a wind turbine and corresponding wind turbine

A wind turbine equipped with a tower, a nacelle rotatably mounted on the tower, a rotor rotatable at the nacelle about a rotor axis of rotation and including one rotor hub and at least one rotor blade which is coupled by a blade bearing to the rotor hub while rotatable about a blade adjustment axis. The blade bearing includes an inner ring firmly affixed to the rotor hub and an outer ring that is fitted with a toothing and that is firmly connected to the rotor blade. The rotor blade is rotatable by a blade adjustment drive including a drive motor actuating a drive pinion meshing with the outer toothing of the outer ring. On the rotor hub's side away from the nacelle, the drive pinion is configured at an angle of 10 to 30&#xb0; as measured about the blade adjustment axis to a plane subtended by the rotor axis of rotation and the blade adjustment axis, and the drive motor is mounted at a distance from the rotor axis of rotation that is smaller than the distance between the drive pinion and the rotor axis of rotation.

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Rendsburg, Germany

Matthias Schubert