International Journal of Collaborative Research in Engineering Sciences (2348-9707) Volume III Issue 2 May 2016 ISSN: 2348-9707© IJCRES | ijcres.com ANALYISNG OF GRID CONNECTED WIND POWER GENERATION USING DOUBLY FED INDUCTION GENERATOR SAMEER BAJPAI, SHASHI KANT Department of Electrical Engineering Babu Banarasi Das University, Lucknow Sameerbajpai786@gmail.com ABSTRACT In recent years, renewable energy has become one of the most important and promising sources of energy generation, which demands additional transmission capacity and better means of maintaining system reliability. The evolution of technology related to wind systems industry leaded to the development of a generation of variable speed wind turbines that present many advantages compared to the fixed speed wind turbines. Doubly fed induction generators (DFIG) are widely used in wind energy generation systems. Keywords : doubly fed induction generator, rotor side converter, grid side converter, wind energy ——————————  —————————— I. INTRODUCTION Full-model which is a 5th order model use quadrature and direct components of The world wide concern about the environment has led to increasing interest in technologies for generation of renewable electrical energy. One way of generating electricity from renewable sources is to use wind turbines. Wind energy has been the subject of much recent research and development .With increased penetration of wind power into electrical grids, DFIG wind turbines are largely deployed due to their variable speed feature and hence influencing system dynamics. This has created an interest in developing suitable models for DFIG to be integrated into power system studies. The continuous trend of having high penetration of wind power, in recent years, has made it necessary to introduce new practices. For example, grid codes are being revised to ensure that wind turbines would contribute to the control of voltage and frequency and also to stay connected to the host network following a disturbance. renewable energy sources not contributing to the enhanced greenhouse effect, especially wind power, are becoming an important component of the total generation. Hence, research concerning the dynamic behaviour of wind energy systems is important to achieve a better knowledge. In response to the new grid code requirements, several DFIG models have been suggested rotor voltage in an appropriate reference frame to provide fast regulation of voltage II. DOUBLY FED INDUCTION GENERATOR Wound rotor induction generators (WRIGs) are provided with three phase windings on the rotor and on the stator. They may be supplied with energy at both rotor and stator terminals. Hence they are called doubly-fed induction generators (DFIGs) or double output induction generators (DOIGs) in the generator mode. Both motoring and generating operation modes are feasible, provided the power electronic converters that supply the rotor circuit via slip-rings and brushes are capable of handling power in both directions. A. OPERATING PRINCIPLE OF DFIG The mainstream high-power wind-energy conversion systems (WECSs) are based on doubly-fed induction generators (DFIGs). The stator windings of DFIGs are directly connected to the grids, and rotor windings are connected to the grids through back-to-back power electronic converters. The back-to-back converter consists of two converters, i.e., rotor side converter (RSC) and grid side converter (GSC) that are connected “back-to back.” Between the two converters a dc-link capacitor is placed, as energy storage, in order to keep the voltage variations in the dc-link voltage small. Control of the DFIG is more complicated than the control of a standard induction machine. In order to control the DFIG the rotor current is controlled by a power electronic converter. Wind turbines use a DFIG consisting of a WRIG and an AC/DC/AC power electronic converter. The stator