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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.
Date of Conference: 16-18 July 2012