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Due to the high distress on the environmental pollution and energy shortage from the last couple of decades, the renewable energies has been of much interest and to be specific the wind power has been developed to a very great extent in last few years. This paper proposes a simple technique to achieve low voltage ride through of DFIG based power generating station. A thyristor controlled voltage regulator (TCVR) on the low voltage side of the DFIG is used to compensate the grid voltage if voltage sag occurs and hence reducing the rise in DC link voltage and also effectively reduces the rotor current under limit during the fault. The simulation work will be carried out using MATLAB/Simulink software and the results will be verified. Keywords— doubly-fed induction generator, thyristor controlled voltage regulator, low voltage ridethrough

Modelling and analysis of a voltage regulator for a large capacity DFIG wind turbine to achieve low voltage ride through