The test and analysis in laboratory is an important part of the research on distributed generation such as photovoltaic and wind power generator. A static simulation device of distributed generation based on converter of full digital control is studied and implemented in the paper. In the simulator, power conversion circuit is mainly realized by active DC/AC inverter, which can adjust active power as well as reactive power injected into the grid at the same time. Complete control strategy is composed of Simplified Selective Harmonic Elimination PWM method (SSHEPWM) and current vector tracking control, which can rapidly and accurately regulate real-time power in a wide range and avoid harmonic pollution to power system. This paper introduces system structure and general idea of the simulator, analyzes the principle of SSHEPWM, deduces system dynamic model and provides the implementation process of the current vector tracking control. Experimental results show that the simulator can effectively simulate the output characteristics of distributed power supply and meet the needs of the related research.