Abstract: When doubly-fed induction generator （DIFG） cuts in power grid,it will inevitably have an impact on the power grid. Excessive rush current will shorten the life of the motor,increase power grid voltage fluctuation,and may even cause the failure of the cutting-in grid. In this paper,the matrix converter is regarded as the AC-excitation systems and equalized as a virtual rectifier and virtual inverter. This control system regards the grid voltage and phase as given value,the stator voltage as a feedback value,and simplifies the solution of complex decoupling control. It will make DIFG stator voltage changes with grid voltage simultaneously by the control of voltage and phase of the virtual inverter. Thereby it reduces the impact current of the cutting-in grid. The experimental results show that the impact current of the cutting-in is little,and verify the feasibility of the control.