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Transient Behavior of Doubly Fed Induction Generator Using Simulink Model in Wind Energy Conversion System

Anuj Kumar , Abhishek Satwase , Rahul Mishra

In this paper, transient behaviours of the Doubly Fed Induction Generator using Simulink model is demonstrated. A mathematical model based on d-q transformation i.e. stator phase currents, rotor currents, stator flux linkages,rotor flux linkages ,instantaneous power electromagnetic torque is also presented. In this paper 9 MW wind farm consisting of six 1.5 MW wind turbines connected to a 25 kV distribution system exports power to a 120 kV grid through a 30 km, 25 kV feeder has been considered. It is concluded in proposed Simulink model, when 3- phase symmetrical fault occur at the grid during t = 0.04s to t = 0.06s, the sudden voltage reduction gives to a lower power injection into the network both active power & reactive power are almost abrupt. This behaviour also depends on the rotor side converter during the fault.