Dynamic Response of Wind Turbine with Double-Fed Induction Generator during Grid Voltage Dip

Based on the transient model of double-fed induction generator (DFIG) under synchronous rotating reference frame, the electromagnetic transient simulation system of DFIG is implemented under PSCAD/ EMTDC. This paper deliberates the dynamic responses of stator and rotor voltage and current, active and reactive power, electromagnetic torque, rotor speed and DC link voltage both during the grid voltage dip and after the clearance of the fault and analyses the reason of the responses. Then, the dynamic response intensity of the above-mentioned variables under two typical voltage dip conditions is compared. Finally, the simulation results validate the research conclusion.