Voltage control in a doubly-fed induction generator wind turbine system

Systems and methods for regulating voltage in a doubly fed induction generator (DFIG) system 200 are provided. More particularly, the voltage of the auxiliary power feed 170 in a DFIG wind turbine system 200 can be regulated by outputting reactive power from a power converter 130 to a reactive element 172 coupled between the auxiliary power feed 170 and a stator bus 122. The reactive element 172 can include a winding of the transformer 130 used to couple the wind turbine system 200 to the electrical grid 180 and/or an inductive element 172 coupled between the output of the power converter 130 and the stator bus 122. The voltage of the auxiliary power feed 170 can be maintained within a reduced operating range while an increased operating range can be provided for a wind turbine system 100.