Abstract: A method is provided for controlling the operation of a wind turbine, the wind turbine including a generator, a converter, a converter control unit, a wind turbine controller and a connection device to an external electrical power grid, wherein electrical power generated by the generator is input into the power grid via the converter, wherein the wind turbine controller is configured to determine a fault condition according to a fault condition signal and to active a safe operating mode in response to the fault condition signal indicating a fault condition, wherein the fault condition signal is determined by evaluating changes in an available output power signal generated by the converter control unit, the available output power signal describing the active output power available from the converter.

Abstract: A method for starting up a wind turbine for generating electrical power is provided, wherein ice accretion is on at least one blade of a rotor of the wind turbine and wherein the at least one blade has a variable pitch angle, the method including measuring the rotational speed of the electromechanical transducer, calculating a pitch angle adjustment with the goal of maximizing the rotational speed, modifying the pitch angle in a positive or negative step according to the pitch angle adjustment, iterate the preceding steps.

Abstract: A method is provided for controlling the operation of a wind turbine, the wind turbine including a generator, a converter, a converter control unit, a wind turbine controller and a connection device to an external electrical power grid, wherein electrical power generated by the generator is input into the power grid via the converter, wherein the wind turbine controller is configured to determine a fault condition according to a fault condition signal and to active a safe operating mode in response to the fault condition signal indicating a fault condition, wherein the fault condition signal is determined by evaluating changes in an available output power signal generated by the converter control unit, the available output power signal describing the active output power available from the converter.

Abstract: A method for starting up a wind turbine for generating electrical power is provided, wherein ice accretion is on at least one blade of a rotor of the wind turbine and wherein the at least one blade has a variable pitch angle, the method including measuring the rotational speed of the electromechanical transducer, calculating a pitch angle adjustment with the goal of maximizing the rotational speed, modifying the pitch angle in a positive or negative step according to the pitch angle adjustment, iterate the preceding steps.