Siemens Gamesa Renewable Energy Service Gmbh

Senvion Se

Repower Systems Ag

Senvion Gmbh

Repower Systems Se

Karsten Warfen

Henning Leweke

Stefan Behl

Timo Gosch-Pleß

Oliver Hör

Heinz-Hermann Letas

Jens Altemark

Marco Hansen

Sören Bilges

Stefan Steiner

Lothar Hendus

Jurgen Bolz

Eckart Hopp

Oliver Sievers

Jens Petersen

Marek Rzepka

Rudiger Gawrisch

Hannes Friedrich

Krischan Schonfeld

Timo Pleß

Till Bestmann

Timo Gosch-Pless

The invention relates to a method for operating a wind power plant, a wind power plant designed to carry out the method, and a corresponding computer program product. In the method for operating a wind power plant comprising a rotor having angle-adjustable rotor blades and a generator rotationally connected thereto and having a controllable torque, the torque of the generator is limited to a maximum value which is linked to the blade pitch angle of the rotor blades such that the maximum value at the switch-on blade pitch angle value is less than or equal to the rated torque value (M) and the maximum value at a rated blade pitch angle which deviates from the switch-on blade pitch angle is equal to the rated torque value (M).

Method for operating a wind power plant

The invention relates to a method for operating a wind turbine, to a wind turbine designed to carry out the method, and to a computer program product. The method for operating a wind turbine comprising a rotor with rotor blades that can be angularly adjusted via a turbine controller, in which a state variable that reflects the current thrust of the rotor is detected, has the following steps: a) ascertaining a short-term average value of the state variable; b) ascertaining the difference between the short-term average value of the state variable and the detected current state variable; c) ascertaining a first target blade angle correction value from the ascertained difference; and d) taking into consideration the target blade angle correction value while adjusting the blade angle by means of the turbine controller.

Method for operating a wind turbine, wind turbine, and computer program product

A management system for controlling a wind turbine according to prescribed rules and a safety system, separate from the management system, for monitoring the wind turbine on the basis of operational characteristic values, wherein the safety system transfers the wind turbine to a safe plant state independently of the management system if safety-critical operational characteristic values violate safety parameters stored in the safety system, in order to change at least one safety parameter stored in the safety system a parameter block comprising the at least one safety parameter and at least two safety features is supplied to the safety system and accepted by the safety system only after a positive check on the safety features, wherein the check on at least one of the safety features requires comparison against check information available directly on the wind turbine.

A method of operating a wind energy installation wherein a rotor has a first rotor blade which can be angularly adjusted, a first adjustment drive for adjusting the rotor blade, and a safety control system. In a normal mode of operation, the first adjustment drive is supplied with energy from a source and is controlled by a first pitch control system. In a failure mode of operation, the supply of energy to the first adjustment drive is switched from the source to an energy storage device and the safety control system monitors a position and/or movement of the first rotor blade. The first rotor blade is adjusted by the first adjustment drive in a direction of a predetermined stopping position, while the safety control system, as a function of the monitored position and/or movement, enables or effects a deactivation of a first power supply shut-off device. In the failure mode of operation, the safety control system, as a function of the monitored position and/or movement, closes a first pitch brake and activates a first blocking mode in which the supply of energy to the first adjustment drive from the energy storage device and/or an opening of the first pitch brake is prevented.

Wind energy installation and a method of operating a wind energy installation

A method of operating a wind energy installation having a rotor with at least one rotor blade that is angularly adjustable by an adjustment drive. In response to the occurrence of at least one special operating case, in particular at least one malfunction case, the rotor blade is adjusted in a direction of a shutdown position by the adjustment drive. In the shutdown position, a supply of energy from an energy storage device to the adjustment drive is switched off and/or a pitch brake for holding the rotor blade in its current position is closed. In response to at least one activation signal, the rotor blade is adjusted by the adjustment drive in an adjustment mode of operation while the special operating case is still ongoing, in particular while the malfunction case is still ongoing.

The method according to the invention for operating a wind turbine, comprising a tower and a rotor arranged at the top of the tower and having at least one rotor blade, which can be adjusted about a blade setting axis, has a first operating mode in which the at least one rotor blade has an operating angular position about the blade setting axis and a wind-force-dependent rotation of the rotor is converted into electrical power using a generator unit, which power is delivered from the wind turbine into an electrical network and/or stored, and a second operating mode in which the at least one rotor blade is adjusted by at least 60&#xb0; and/or max. 110&#xb0; about the blade setting axis relative to the operating angular position into a damping angular position, and a counter torque braking the rotor is controlled based on a vibration of the tower.

Method and controller for operating a wind turbine

The invention relates to a device for measuring moments of a wind turbine, comprising a carrier pin that can be fixedly connected to a bedplate of a nacelle of the wind turbine, which is arranged on a tower and can be adjusted with respect to yaw, a torque support of a gearbox of the wind turbine being mountable on the carrier pin via an elastomer body, and to a method for operating a wind turbine and the corresponding wind turbine. The carrier pin is provided with one or more sensors that are designed and arranged to detect strains and/or shears of the carrier pin, a signal processing and/or evaluation unit being provided, which is connected to the sensor(s) and which can determine, during operation of the wind turbine, from measurement signals of the sensors, pitch moments and/or yaw moments that act upon the torque support.

Device for measuring moments of a wind turbine, method for operating a wind turbine, and wind turbine

The invention relates to a method and a system for monitoring an individual blade adjustment of a wind turbine which includes a tower, a rotor which is arranged on the tower and has at least two rotor blades whose blade angle can be adjusted individually, and a blade adjustment system, wherein the blade adjustment system includes a blade controller and sensors for sensing individual actual blade angles of the at least two rotor blades, wherein an individual blade controller is included which receives a collective set point blade angle from the blade controller and which actuates at least two rotor blades with respectively individual set point blade angles, as well as a corresponding wind turbine.

Method and system for monitoring an individual blade adjustment of a wind turbine

A method for operating a wind energy installation having a tower, a nacelle arranged on the tower, the azimuth of which can be adjusted, and a rotor having at least one rotor blade, the blade angle of which can be adjusted, in which tower oscillations are detected and monitored during operation using at least one measuring apparatus and power operation is switched off if a sliding average of the tower oscillations exceeds a tower oscillation limit value. The tower oscillation limit value is defined, at least during load operation of the wind energy installation, as at least one limit value function which is dependent on a sliding average of prevailing wind speed and/or a parameter associated therewith, and has different functional dependencies in a plurality of different value ranges of the prevailing wind speed or the parameter associated therewith. The invention also relates to a wind energy installation.

Method for operating a wind energy installation, and wind energy installation

A hydraulic actuation device () for a brake device of a wind turbine including a hydraulic control line (), which runs from a hydraulic system circuit (P) of a wind turbine to at least one brake cylinder () of a brake device. At least one restrictor () is arranged in the control line (). At least one branch line () includes a pressure regulating member () that branches off from the control line () upstream of the restrictor () in the pressure build-up direction, bypassing the restrictor (), and leads back into the control line () downstream of the restrictor (). The pressure regulating member () open when the pressure present on the output side is low, but closes when the pressure at the pressure regulating member () on the output side of the pressure regulating member () exceeds a preset closing pressure (P).

Hydraulic brake device for a wind turbine

A method for operating a wind turbine (). The wind turbine () is operated with variable rotational speed between predeterminable minimum and maximum rotational speeds. A characteristic variable () of an oscillation of the wind turbine () is detected. The wind turbine () includes a tower () and a rotor (). An open-loop or closed-loop control device () provides open-loop control or closed-loop control of the rotational speed of the rotor () between a minimum rotational speed and a maximum rotational speed during a power-supplying operation of the wind turbine. A sensor () detects a characteristic variable () of an oscillation of the wind turbine () and the minimum rotational speed is changed depending on the characteristic value () of the oscillation. The minimum rotational speed is altered depending on the characteristic variable () of the oscillation by the open-loop or closed-loop control device ().

Method for adjusting the rotational speed of a wind turbine and wind turbine

A method for the operation of a wind power plant () with a rotor (), which has at least one rotor blade (), wherein at least one part of the rotor blade () will be or is rotated around a longitudinal axis of the rotor blade () by a blade angle () wherein the rotation of the at least one part of the rotor blade () occurs with a pre-settable blade angle adjustment rate (&#x3b8;), wherein the rotor () is operated speed variably and wherein the blade angle adjustment rate () is restricted by a pre-settable blade angle adjustment rate limit (G, G', G-G). Furthermore, a wind power plant () with a rotor (), which receives at least one rotor blade (), wherein at least one part of the rotor blade () is rotatable around a longitudinal axis of the rotor blade () by a blade angle (), wherein a blade angle adjustment rate is pre-settable and the blade angle adjustment rate () is restricted by a blade angle adjustment rate limit (G, G&#x2032;, G-G).

Blade angle adjustment rate limit adjustment

A wind energy installation includes a tower provided with rotor blades that are adjusted using a servomotor connected to a pitch circuit and an emergency circuit. During normal operation the rotor blades are actuated by the pitch circuit and during emergency operation are actuated by the emergency circuit. The emergency circuit has an electric energy store, a switching device, connection lines to the servomotor and a protection device which includes comprises a power flow detector module () designed for determining whether electric power flows into or from the servomotor and a discharge module designed to limit the voltage and/or current in the emergency circuit in the case of a power flow from the servomotor.

Energy supply for a blade adjustment device pertaining to a wind energy installation

The invention relates to a method for the operation of a wind energy plant (), wherein the wind energy plant () has a rotor () with a rotor axis and at least one rotor blade (') arranged on the rotor (), wherein the rotor blade (&#x2032;) is adjustable or adjusted around a rotor blade axis with a predetermined rotor blade pitch angle. Further, at least one rotor blade (&#x2032;) is rotated into an idle position, the rotation of the rotor blade (&#x2032;) is braked after a first predetermined rotational position of the rotor blade (&#x2032;) is reached and the stand-still position of the rotor blade (&#x2032;) reached as a result of the braking procedure is captured. Furthermore, the invention relates to a wind energy plant () with a rotor () and at least one angle-adjustable rotor blade (&#x2032;) arranged on the rotor ().

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Söhren, Germany

Karsten Warfen