Nordex Energy Gmbh

Nordex Energy Se & Co. Kg

Ines Runge

Konrad Sachse

Stefan Magnus

Danela Jacob

Adrian Dibbern

A heating element for an outer surface of a wind turbine rotor blade, wherein the heating element has a length and a width. The heating element includes a carbon fiber layer having a plurality of slots subdividing the carbon fiber layer into consecutive band sections defining a current path between a first connecting portion and a second connecting portion. The first connecting portion is adapted to be connected to a first power supply line and the second connecting portion is adapted to be connected to a second power supply line. The current path has a length of at least twice the length of the heating element.

Heating element for an outer surface of a wind turbine rotor blade

A method for operating a wind turbine includes determining a current temperature of a rotor blade and activating and deactivating a rotor blade heating device in dependence upon the determined current temperature. The current temperature is determined by assuming a temperature starting value and calculating a change in temperature taking into account at least one predefined characteristic variable for the temperature behavior of the rotor blade and at least one operating parameter of the wind turbine.

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Henstedt-Ulzburg, Germany

Ines Runge