Dynamics of DFIG controlled by Rotor Side Converter in wind energy

The paper is concern with the investigation of control of Doubly Fed Induction Generator (DFIG) carried out by Rotor Side Converter (RSC) applied in wind energy harvest. Throughout the paper the principle of Stator Flux Oriented Vector Control (SFOVC) is applied. In the first part of the paper a general slip-torque relation is derived with three torque components: one component is derived by the stator voltage, the other one by the d component and the third one by the q component of the rotor voltage space vector. In the second part of the paper, the dynamic behavior of the algorithm controlling the stator active and reactive power is simulated in open loop and closed loop.