Power Control of Grid Connected Doubly Fed Induction Generator with Sensor-less Speed and Position Estimation Algorithm

The aim of this thesis deals with the analysis, modeling and control of doubly-fed induction generator (DFIG) for wind turbines. The system uses two converters connected back to back, one is rotor side converter (RSC) or machine side converter and the other one is front end converter or grid side converter (GSC). The rotor side converter controls the active and reactive power by controlling the d-q components of rotor current (i.e.