Enhancement of LVRT Capability in DFIG-Based Wind Turbines with STATCOM and Supercapacitor

Overvoltage and overcurrent resulting from various faults cause instability in Doubly Fed Induction Generator (DFIG)-based wind turbines connected to a grid. The grid code requirement must be met during minimize the effect of these problems. Low Voltage Ride Through (LVRT) capability is used meet requirement. It important use coordinate control for transient states LVRT capability. This study aimed improve stator dynamics ease calculation rotor dynamic model by damping oscillations caused balanced unbalanced on side. For this, electromotive force (emf) models were developed modeling. Furthermore, DFIG, lookup-table-based supercapacitor decoupled Static Synchronous Compensator (STATCOM). Using models, analyses three-phase two-phase conducted. Following different within grid, system was stabilized short time, occurring quickly damped using this study.