Analysis of SFCL for Improving Fault Ride Through of DFIG

With the wide use of the wind power energy, Doubly Fed Induction Generator (DFIG) plays an important role in the power grid. Because the stator side of DFIG is connected with the grid, the fault ride through (FRT) is widely followed by people. To reduce the cost of the fault current limiter (FCL) economically, adopting a resistive-type superconducting fault current limiter (SFCL) with isolation transformers to enhance FRT capability of DFIG is realized in this paper. The simulation model is built on the Matlab/Simulink platform. Based on the simulation results, the rotor current of DFIG is better suppressed under the short-circuit faults.