Abstract: In order to investigate the enhanced control and operation of wind power generation systems based on doubly fed induction generators （DFIGs） when the network voltage is unbalanced,a proportional-resonant （P-R） current control scheme and coordinated control strategies for grid-and rotor-side converters （GSC and RSC） are presented. In this paper,with the aim of simultaneously regulating the positive and negative sequence rotor currents without involving any sequential-decomposition process,a P-R current control scheme implemented in the two-phase stator stationary αβ reference frame was proposed for the DFIG’s RSC when the network voltage is unbalanced. Based on the positive-sequence d+-axis grid voltage orientation,reference calculations of positive and negative sequence rotor currents were simplified with respect to various enhanced control targets. Associated control scheme for a DFIG wind power generation system during network unbalance was designed and constructed so as to confirm the feasibility of the P-R current controller. Experimental results show that the proposed P-R current control scheme is capable of realizing the RSC’s control targets with excellent transient performance. As a result,the ride-through capability of DFIG wind generation system under unbalanced network fault conditions is enhanced.