State of Charge Based Decentralized Coordination Control for Multiple Bidirectional Power Converters in a Hybrid AC/DC Microgrid

Multiple bidirectional power converters (BPCs) are the key equipment in a hybrid AC/DC microgrid. In the literatures, the hybrid AC/DC microgrid adopts the BPCs to balance the power in both AC subgrid and DC subgrid, but the SOC management of battery storage system has not been considered in BPCs' operating strategy. Besides, the information exchange between devices relies on the communication links. This paper considers a hybrid microgrid topology which has two energy storages in both AC side and DC side. And a coordination control method without communication links for multiple BPCs based on SOC has been proposed to enhance the reliability of hybrid microgrid. Finally, the simulation results in different situations verify the correctness of the theory.