Improvement of Fault Ride-through capability in DFIG wind turbine with Fuzzy controlled SFCL

In power systems for smart grid, integration of renewable energy sources and super conducting devices brings more positive effects. This paper suggests a Fuzzy controlled Active Super conducting Fault current limiter (SFCL) to improve the Fault ride-through capability improvement of doubly fed induction generator (DFIG) for wind power generation. Since Fuzzy controlled Active SFCL has higher controllability and flexibility, its application may give better results. Related theory derivation, cost evaluation and simulation are conducted and comparison is performed between with and without Active SFCL. From the results active SFCL can limit the faulty currents flowing through the DFIG�s stator and rotor windings and compensate the terminal voltage.