A SFCL-Based Fault Ride Through Method for PMSG-Based Wind Turbine

This paper presents a compositive method for enhancing the fault ride-through capability of permanent magnetic synchronous generator (PMSG) based wind turbine (WT) under various grid faults. In this compositive method, the surplus power on dc-link is eliminated by coordinating two modules of superconducting fault current limiter (SFCL) and a decreasing power control (DPC). Also, a transient reactive power control (TRPC) module is proposed to eliminate the impact of grid voltage on SFCL performance. Coordinating mode of three modules assist the WT to withstand the symmetric grid fault. Several cases are conducted to prove the feasibility of the proposed method.