Software Design on Grid-Connected Inverter Control System

With the fast development of renewable resource,Grid-connected technology has become a hot point in modern power electronics technology.how to realize that electrical energy feeds into grid in the work of grid-connected is a difficult problem.Firstly,the topology and the control system strcture of PWM grid-connected inverter have been discussed briefly in this paper.the system software of grid-connected inverter was designed mainly,including the system registers initializing,A\D sampling,coordinate changing,phase of grid locking and so on,Based on TMS320F2812 DSP,an experimental platform of two-level grid-connected converter is developed.Experimental results verify the correctness of the proposed control system and the reasonableness of the system software design.