Research on Active Support Collaborative Control Method Based on New Hybrid DC Energy Storage

Energy storage technology is divided into energy type and power type in terms of demand. Traditional DC microgrids require energy type energy storage as a reliable voltage source to meet long-term power supply needs. This article proposes a new hybrid DC energy storage technology scheme, which combines energy type and power type energy storage in microgrids, taking into account the characteristics of fast transient response and long duration of energy type energy storage. A hybrid energy storage universal DC model was established, and a collaborative control strategy based on active DC voltage support was proposed to achieve the control characteristics of a DC voltage virtual synchronous machine. A simulation model of a DC microgrids system was built in Matlab/Simulink, and the correctness of the control strategy proposed in this paper was verified by comparing traditional control strategies with active support collaborative control strategies.