DFIG for Wind Energy Generation Using Stator Voltage Orientation Control – A Review

Now a days as one of the most important renewable source of energy is wind energy that is gaining interest due to its ecofriendly nature. This paper is about the study on control of wind driven doubly fed induction generator. A converter setup that is back to back PWM with stator voltage oriented vector control is used to control the DFIG. The back to back PWM converter set up consists of the Rotor Side Converter and the Grid Side Converter with intermediate DC link. Decoupled control of the DC link voltage and the grid reactive power is obtained through Voltage oriented control of GSC. Similarly independent control of power from wind and reactive power of DFIG is carried out by stator voltage oriented vector control of RSC. Coordinated control of the back to back converter setup in both sub synchronous and super synchronous mode is presented.