DFIG control performance under fault conditions for offshore wind applications

Fault ride-through is a key issue for Doubly Fed Induction Generators (DFIGs) used in wind turbine generators. A detailed simulation of the DFIG is used to demonstrate the control issues associated with specific balanced and unbalanced network fault conditions and contrasts this with user experience. The standard DFIG scheme is shown to be unlikely to comply with transmission system operator regulations. The work presented is part of an ongoing investigation into cost-effective solutions. for DFIG fault ride-through.