The doubly fed induction generator (DFIG), used as a wind turbine generator, has recently received a great attention from the industrial and scientific communities. The reasons of that are: it easily produces a fixed frequency from the stator windings when the rotor is driven at variable speed, and the excitation power electronic converter feeding the rotor windings needs to be rated at a fraction of the nominal power of the generator. The aim of this paper is to develop a mathematical model for the Wind Energy Conversion system (WEC) driving a DFIG. The steady-state simulation model of the DFIG is developed using MATLAB.  Simulation analysis is performed to investigate the DFIG characteristics including torque, real power and reactive power with speed (i.e. slip) characteristics. Comparison with measured characteristics shows a close agreement which indicates that the model is accurate.