Patent ID: 8759995

Claim:
Control process of a wind turbine generator, said wind turbine generator comprising a wind rotor, at least two blades linked with said wind rotor, an electric generator, a control unit and a power converter connecting the electric generator to the grid, said control process comprising: a) determining a signal indicative of wind turbine generator rotational speed (ω g ); b) establishing a first command (idref 1 , Qref 1 ) for reactive current and/or reactive power; c) establishing a second command (idref 2 , Qref 2 ) for reactive current and/or reactive power; d) comparing the signal indicative of rotational speed (ω g ) with a predetermined first speed limit, in order to act in accordance with one of the following substages: d1) applying the first command (idref 1 , Qref 1 ) for controlling the generator in the event that the signal indicative of rotational speed (ω g ) calculated in stage a) is lower than the first speed limit value; and d2) applying the second command (idref 2 , Qref 2 ) for controlling the generator in the event that the signal indicative of rotational speed (ω g ) calculated in stage a) is greater than or equal to the first speed limit value.