RTDS-based real time simulations of grid-connected wind turbine generator systems

This paper presents the modeling and analysis of grid-connected wind turbine systems using real time digital simulator (RTDS). The different modeled systems of wind turbine generator systems (WTGS) such as permanent magnet synchronous generator (PMSG), induction generator (IG), synchronous generator (SG) and doubly fed induction generator (DFIG) are simulated. Three control schemes for 3 MW WTGSs of squirrel cage induction generator (SCIG), DFIG with back-to-back converter and PMSG with back-to-back converter are designed for the modeled systems. The simulation results show the performances of each type of WTGS under the same wind speed pattern. It has been verified that the RTDS based realtime simulations of grid-connected wind turbine generator systems to be effectively employed to evaluate the control schemes and output performances of different types of WTGSs.