Transient stability improvement analysis among the series fault current limiters for DFIG based wind generator

In this paper the transient stability improvement analysis of DFIG based variable speed wind generator (WG) is performed among the promising series fault current limiters (fCLs) like the solid-state fault current limiter (SSFCL), and series dynamic braking resistor (SDBR) with the proposed new parallel resonance bridge type fault current limiter (NPR-BFCL). The transient stability analysis is done among the series FCLs in terms of transient stability performances, implementation feasibility, control structure, and cost. A temporary balanced and unbalanced fault was applied in the DFIG based test system to demonstrate the transient stability performance among the series compensating devices. In this work extensive simulations were executed in Matlab/Simulink software and simulation result shows that the mentioned series devices can augment the transient stability during the fault, however, the SSFCL and the NPR-BFCL is the most effective series devices and performed well in comparison to SDBR.