Abstract: The topology and working principle of the optical-storage bidirectional converter based on virtual synchronous generator technology is introduced, the small signal model modeling based on the control strategy of virtual synchronous generator is carried out, the design method of key parameters of virtual inertia, active frequency and reactive voltage control is given, and the influence of these parameters on the performance of the device is analyzed. Finally, for the prototype of 30kW virtual synchronous generator integrated with optical and storage, PSACD / EMTDC simulation results and hardware experiment results are used to verify the effectiveness of the control strategy and parameter design.