Application of STATCOM to Enhance the LVRT Capability of DFIG Based Wind Turbine Generating System

Abstract: This paper present application of STATCOM to enhance the LVRT (Low Voltage Ride-Through) capability of DFIG (Doubly-Fed Induction Generator) based wind turbine generators. Two different controlled techniques are applied for STATCOM controller. 1) Decoupled Current controlled technique 2) Hysteresis current controlled technique. Simulation results, are carried out for both the controlled techniques and based on that performance comparison is done. Three phase fault is simulated at PCC bus. Among various controlled techniques of STATCOM these two are widely used for small and large power requirement.

Keywords: DFIG, LVRT, STATCOM, HCC, wind turbines.