When the direct driven wind turbine with permanent magnet synchronous generator (D-PMSG) faces the grid asymmetric faults, the negative sequence component makes DC bus voltage produce 2 times frequency oscillation, thus this paper proposes to form a balanced three-phase voltage based on the single-phase voltage delay 60°theory to eliminate the effect of negative sequence component on DC bus voltage. For grid-side inverter, this paper uses voltage ring to steady DC voltage and control active power of converter in outer loop, and uses current feedforward control in inner loop to make the voltage vector decouple in dq axis and control output current of inverter based on the reference value of current obtained by outer loop control. Meanwhile, this paper uses energy discharge circuit to solve power congestion of DC side for D-PMSG in grid asymmetric faults. In addition, the improved minimum energy control strategy is used for dynamic voltage restorer DVR to provide the maximum reactive power support for the system and recover grid side voltage, so as to ensure the stable operation of the system. The simulation results show the effectiveness of the control strategy depending on real-time data in Hexi grid.