Performance Analysis of Doubly-Fed Induction Generator Connected to A Wind Turbine for Variable Wind Speed

Abstract — This paper presents the model and simulation of wind turbine drives doubly-fed induction generator, which feeds AC power to the utility grid. Two voltage source converters are used to extract maximum power from variable wind speed. The converters are connected back to back between the rotor terminals of the induction generator and utility grid via common dc link. The grid-side converter controls the power flow between the DC bus and the AC side. The rotor side converter control the output power generated. Matlab/Simulink software package is used to simulate the system. The results of two wind speed and two blade pitch angles are obtained and compared. Index Terms —Induction generator, wind turbine, back to back converter, variable speed