A Common Capacitor Based Three Level STATCOM and Design of DFIG Converter for a Zero-Voltage Fault Ride-Through Capability

To meet the augmented load power demand, doubly-fed induction generator (DFIG) based wind electrical conversion system (WECS) is a better alternative. Further, to enhance flow capability and raise security margin in system, STATCOM type FACTS devices can be adopted as an external reactive source. In this paper, three-level coordinates with its dc terminal voltage connected common back-to-back converters. Hence, lookup table-based control scheme outer loops Rotor Side Converter (RSC) grid side converter (GSC) of DFIG improve transfer dynamic well transient stability. Moreover, DC capacitor bank converters point. The main objectives work are mitigation, operation during symmetrical asymmetrical faults, limit surge currents. parameters like winding currents, torque, rotor speed examined at 50%, 80% 100% comparing earlier works. we studied performance 30%, 60%, dip. Zero-voltage fault ride through investigated proposed technique under LG for super-synchronous (1.2 p.u.) sub-synchronous (0.8 speed. Finally, different phases ground faults without STATCOM.