PERFORMANCE EVALUATION OF DOUBLY FED INDUCTION GENERATOR

Abstract

World-wide concern about environmental pollution and a possible energy crisis has led to increasing interest in technologies for generation of clean and renewable electrical energy. Among the various renewable energy sources, wind power is the most rapidly growing one. During the last decade, with the penetration of wind power into the electrical grid, there has been a fast growing demand for the application of Doubly Fed Induction Generator (DFIG) in electrical power systems owing to its numerous advantages over other generators in wind energy conversion systems. This report makes a study on doubly fed induction machine and wind turbines. A model of the DFIG based wind turbine connected to grid is developed in Matlab/Simulink environment. The topology utilising static scherbius drive scheme in the rotor is taken up in this work. The performance of the system is evaluated both under constant wind speed (ideal condition) and varying wind speed (practical scenario) condition when maximum power tracking feature is employed.