Nordex Energy Gmbh

Lars-Ulrich Wiese-Muller

Wolfgang Kabatzke

Gerd Hose

Detlef Schluter

Thomas Frese

The present invention is related to a method for controlling a wind energy plant, with a nacelle disposed on a tower and with a rotor with at least one rotor blade, the blade adjustment angle of which can be adjusted by means of a blade adjustment equipment. The objective to provide a reduction of the loads acting on the plant when there is a malfunction of the blade adjustment equipment is resolved according to the present invention in that the function of the blade adjustment equipment is monitored, and when an error of the blade adjustment equipment occurs, the nacelle is rotated from an operating position into a rest position, in which there is a flow of the wind against the surface extended by the at least one rotor blade () in a rotation of the rotor which is reduced with respect to the operating position.

Method for controlling a wind energy plant

A wind energy plant having at least one rotor blade with a pitch angle, the pitch angle being adjustable by means of a pitch controller, and a generator converter unit, at least one electrical quantity of the generator converter unit being adjustable by means of a converter controller, wherein the wind energy plant has a power train with a rotor having the at least one rotor blade, the rotor being disposed at a front end of the power train and the power train leading to the generator converter unit, wherein a first rotation speed detection unit is provided at the power train near the front end of the power train and a second rotation speed detection unit is provided at the power train near the generator converter unit, wherein the measured rotation speed nof the first rotation speed detection unit is applied as an input variable to the pitch controller and the measured rotation speed of the second rotation speed detection unit is applied as an input variable to the converter controller.

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Pinneberg, Germany

Lars-Ulrich Wiese-Muller