A coupled-circuit model for a DFIG operating under unbalanced conditions

The paper describes a time-stepped coupled-circuit model for a doubly-fed induction generator. The model, which is based on the summation of the harmonic winding inductances, is capable of representing both open- and short-circuit stator and rotor winding faults. The main purpose of this paper is to present evidence of the validity of this versatile and powerful technique and the advantages it offers when used for modeling and analysis of doubly-fed induction generator operation in unbalanced conditions.