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

Arapid development 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, whichwill 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.

Automated summary

The rapid development of PMSG-based offshore wind farms in the past decade has led to the proposal of improved fault ride-through (FRT) schemes to prevent disconnections during faults. In this study, the use of a resistive SFCL is proposed to enhance FRT capabilities by reducing energy consumption during faults and improving the performance of the Chopper circuit. Simulation results using PSCAD/EMTDC software validate the feasibility of the proposed scheme.