Dynamic Modeling and Analysis of Wind Turbine Driven Doubly Fed Induction Generator

Abstract— The doubly-fed induction machine used as a wind turbine generator has recently received a great attention from the industrial and scientific communities. The reason is twofold: first, this machine easily produces a fixed frequency voltage from the stator windings when the rotor is driven at variable speed; second, the excitation power electronics converter feeding the rotor windings needs to be rated at a fraction of the nominal power of the generator. Consequently, this machine is often the natural choice for electricity generation from renewable energy sources. The aim of the paper is to develop and discuss a dynamic model of the doubly fed induction generator used in wind turbines for various operating conditions. Power electronic converters are used to achieve the three phase constant output voltage with constant frequency irrespective of load conditions.