Transient Analysis of DFIG & Synchronous Generator Connected to Infinite Bus

The global electrical energy consumption is rising and there is a sudden increase in the demand of power generation. Large number of renewable energy units is now being integrated to power system for meeting and the rising demand of power generation. Slip ring induction machine in the variable speed wind turbine popularly known as double fed induction generator is mostly used in wind power generation. The main reason for the popularity of the doubly fed wind induction generators connected to the power network is their ability to supply power at constant voltage and frequency. Doubly Fed Induction generators are used commonly in wind generation purpose. When the slip of the induction motor is negative then it becomes Induction Generator. For a given speed by controlling the rotor voltage and phase angle the control of real and reactive power is obtained. This paper explains simulation study for d-q axis modeling of a DFIG for steady state and transient conditions. The simulation of wind electric generator system including wind turbine, the DFIG connected to a power system along with other wind mills will be simulated. MATLAB platform is used for Doubly Fed Induction Generator modeling.