Global environmental changes, nuclear power risks, losses in the electricity grid, and rising energy costs are increasing desire to rely on more renewable for generation. Recently, most people prefer live work smart places like cities universities which integrating grid systems. The large part of these systems is based hybrid sources make management a challenging task. Thus, design an intellige...

This paper proposes an energy management system (EMS) of direct current (DC) microgrid. In order to implement the proposed EMS, control and operation method EMS is presented in this work. While most studies have individually examined grid-connected mode used building stand-alone applicable island, allows it be both with 10 modes. determine each not only amount generated power, load state charge...

Microgrid system has received more and more attention internationally in recent years. As the most effective form of distributed generations, microgrid system has also found wide applications in many areas. In this paper, the optimal configuration issue of microgrid system is described briefly first. And then the monitoring system of microgrid system is discussed in details. Different control m...

Motivated by the recent interest in smart grid technology and by the push towards distributed and renewable energy, we study the parallel operation of DC/AC inverters in a lossless microgrid. We show that the parallel interconnection of DC/AC inverters equipped with conventional droop controllers is precisely described by the Kuramoto model of coupled phase oscillators. This novel description, ...

Aiming at the independent AC/DC microgrid, a simple and effective multi time scale control strategy is proposed by adopting combination of day ahead scheduling real-time control. The takes minimum operation cost microgrid as goal, schedules controllable loads in with particle swarm optimization, which makes full use renewable energy. controls output distributed generation, load reduction switch...

Haojie Wang 1,*, Minxiao Han 1, Wenli Yan 2, Guopeng Zhao 1 and Josep M. Guerrero 3 1 School of Electric And Electronic Engineering, North China Electric Power University, Beijing 102206, China; [email protected] (M.H.); [email protected] (G.Z.) 2 School of Mathematical And Physical Science, North China Electric Power University, Beijing 102206, China; [email protected] 3 Department of...

The integration of an electrical storage system (ESS) into a DC microgrid using bidirectional DC/DC converter provides substantial benefits but requires careful design. Among such topologies, the Split-pi presents several merits at cost non-isolated operation. However, few works in literature on presented only closed-loop control with single loop; furthermore, they neglected reactive components...

A microgrid may operate under two typical modes; the seamless transfer control of the microgrid is very important. The mode conversion controller is installed in microgrid and the control logic of master power is optimized for microgrid mode conversion. In the proposed scheme, master power is very important. The master-power is under the PQ control when microgrid is under grid-connected. And it...