Fault ride-through of PMSG-based offshore wind farm connected through cascaded current source converter-based HVDC

Abstract

This paper describes a new fault ride-through (FRT) strategy for the permanent-magnet synchronous generator (PMSG) based offshore wind farm, where cascaded current-source converters (CSCs) are employed on both generator- and grid-side. This FRT strategy uses inherent short-circuit operating capability of the CSC for the fast power reduction during the grid faults. The grid-side converters are controlled to fulfill the demanding reactive power requirement during the grid fault. The simulations are carried out in MATLAB/Simulink. The simulation results are provided to ensure the validity and feasibility of the proposed FRT method.