An optimal power management system for automatic connection of DC and AC resources of hybrid-microgrid systems

摘要

Recently, the necessity of hybrid-microgrid system has been proved as a modern power structure. This paper studies a power management system (PMS) in a hybrid network to control the power-flow procedure between DC and AC buses. The proposed architecture for PMS is designed to eliminate the power disturbances and manage the automatic connection among multiple sources. In this paper, PMS benefits from a 3-phase proportional resonance (PR) control ability to accurately adjust the inverter operation. Also, a Photo-Voltaic (PV) unit and a distributed generator (DG) are considered to supply the load demand power. Compared to the previous studies, the applied scheme has sufficient capability of quickly supplying the load in different scenarios with no network failures. The validity of implemented method is verified through the simulation results.