Wobben Properties Gmbh

Mustafa Onur Kimilli

Ralf Messing

Florian Rubner

Stefanie Bott

Daniel Senftleben

Frank Zimmermann

Maik Nitsche

Matthias Giesler

Hauke Maaß

A wind turbine includes a tower, an aerodynamic rotor operable at a variable rotor speed and having a plurality of rotor blades each having an adjustable rotor blade setting angle and a generator for generating an electrical output power. An operating characteristic curve is prespecified for operating the wind turbine. The operating characteristic curve indicates a relationship between the rotor speed and the output power. A controller is provided, which sets the output power in accordance with the operating characteristic curve depending on the rotor speed. The the operating characteristic curve has a starting rotation speed to which the rotor speed increases as soon as the wind turbine starts when a sufficient wind speed is reached. The starting rotation speed is defined depending on a tower natural frequency of the wind turbine and/or depending on a detected turbulence measure of the prevailing wind.

Wind turbine and method for controlling the wind turbine using an operating characteristic curve

A two-part or multi-part rotor blade and also to a method which is associated with it. The rotor blade is split into at least one rotor blade component which is close to the hub and one rotor blade component which is remote from the hub at a separation point in the longitudinal direction, wherein the rotor blade component which is close to the hub and the rotor blade component which is remote from the hub can be connected at the separation point for operation of the wind turbine. A ratio of profile thickness to profile depth, called relative thickness, at the separation point lies within a range of from 0.4 to 0.5. An improved two-part or multi-part rotor blade in spite of the unexpectedly high relative thicknesses.

Rotor blade of a wind turbine and method for designing same

A method of controlling a wind power plant for generating electrical power from wind is provided. The plant comprises a rotor having rotor blades with adjustable blade angles and the rotor can be operated at a variable rotational speed. The method includes controlling the plant in a partial load mode when wind speed is below a nominal speed and, controlling the plant in a storm mode when the wind speed is above a storm commencement speed. An output power of the plant in the partial load mode and storm mode is adjusted according to an operating characteristic curve that determines a relationship between the rotational speed and the output power. A partial load characteristic curve is used as the operating characteristic curve for controlling the power plant in partial load mode, and a storm mode characteristic curve is used as the operating characteristic curve for controlling the plant in storm mode.

Operation of a wind power plant during a storm

A rotor blade for a wind turbine, a wind turbine, a wind park and a method for configuring a rotor blade which is divided in two. A rotor blade for a wind turbine, which rotor blade extends in the longitudinal direction from a blade connection to a blade tip with a variable profile depth, wherein the rotor blade is divided at a separating point and has a separating point profile depth at the separating point, a relative blade length of the rotor blade, starting from the blade connection, is defined in a blade length value range between 0% to 100%, the separating point is arranged in a blade length value range between 25% and 50%, a rotor blade section facing the blade connection and a rotor blade section facing away from the blade connection can be connected at this separating point for correct operation of the rotor blade, a depth ratio which is composed of the variable profile depth and the separating point profile depth is defined, a development index is defined as a gradient of the depth ratio in the direction of the relative blade length, and the development index in the region of the separating point is less than 1.

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Munich, Germany

Mustafa Onur Kimilli