Development of Doubly Fed Induction Generator Equivalent Circuit and Stability Analysis Applicable for Wind Energy Conversion System

This paper presents the development of the dynamic modeling and transient stability analysis of Doubly Fed Induction Generator (DFIG) based wind energy conversion system (WECS). In this, the space phasor theory with alternate reference frame is used for machine modeling. The dq modelling of the DFIG machine has been developed. The per phase equivalent circuit of the DFIG in dq reference frame is obtained. MATLAB Simulink has been used as the tool to evaluate the stability analysis of the wind energy conversion system. It is obtained that the developed model has provided stable output voltage to the grid during the transition of the wind speed.