Research on autonomous control strategy for DC microgrid

The DC microgrid has the advantages of simpler control, higher power conversion efficiency and lower cost com pared with AC micro grid, which is the future development direction of smart grid. The method of autonomous control re quires no communication bus, it can improve reliability of the system and reduce the cost of the system. Therefore, this paper studies the key control problems of the autonomous control sys tem of the non-communication bus. In this paper, the design method of DC microgrid autonomous control system is studied and improved, several working modes are defined, with case studies in a typical DC microgrid system, the effectiveness of the proposed method is verified by Matlab / Simulink.