Investigation on FRT Capability of PMSG-Based Offshore Wind Farm Using the SFCL

A rapiddevelopment of the permanent magnetic synchronous generator (PMSG)-based offshore wind farm has been witnessed in the past decade. To prevent the offshore wind farms from being disconnected during a fault, many countries have proposed specification requirements for the fault ride-through (FRT). Traditional FRT scheme Chopper circuit for PMSG needs to consume all the mismatching energy and the impulse current is too high during the fault, which will even affect the safe of the PMSG. In this paper, the superconducting fault current limiter (SFCL) is applied to enhance the ability of the FRT in the PMSG-based offshore wind farm. In the proposed scheme, the resistive SFCL can reduce the energy consumption and improve the working performance of the Chopper circuit by absorbing the power of the grid-side converter (GCS) during the fault. An offshore wind farm model is built through PSCAD/EMTDC software. The comparison simulation results validate the feasibility of the proposed scheme.