Patent ID: 9581139
Date: 2017-02-28
CPC Classifications: F03D,H02J,H02P,Y02E

Claim:
1. A wind turbine comprising a rotor, a generator driven by the rotor, a converter, and a control device comprising: an input for a control signal for the reactive power output, an input for the actually output voltage of the wind turbine, a regulator for the converter, wherein the regulator is configured to calculate, locally, a reactive power setpoint value for the wind turbine from the control signal for the reactive power output, and to correct the reactive power output by the wind turbine based on a comparison of the actually output voltage of the wind turbine with the control signal for the reactive power output, and an additional module, the additional module having separate small-signal and large-signal signal paths, wherein the small-signal signal path has an additional storage element in comparison with the large-signal signal path, the additional storage element storing previous state values of the small-signal signal path, wherein the regulator is configured to correct the reactive power output by the wind turbine based on outputs of the small-signal signal path and the large-signal signal path.