Distributed control and energy storage requirements of networked Dc microgrids

•Energy storage is a important design component in networked micro- grids.•Distributed droop control enables a decentralized control architecture.•A Hamiltonian approach enables feed-back actuation of the system through storage devices.

Microgrids are a key technology to help improve the reliability of electric power systems and increase the integration of renewable energy sources. Interconnection and networking of smaller microgrids into larger systems have potential for even further improvements. This paper presents a novel approach to a distributed droop control and energy storage in networked dc microgrids. Distributed control is necessary to prevent single points of failure along with flexibility and adaptability to changing energy resources. The results show that systems with random sources and fast update rates, a networked microgrid structure can minimize required energy storage requirements.