Study of Home Energy Management System for DC-based Nanogrid

Efficiency has become a key parameter of development when designing any electrical power distribution system. Meanwhile, a significant attention has been paid to the design of nanogrid, which is comprising a residential house with renewable energy sources. A direct current (DC) distribution system with high and low voltage home appliances and devices within a house is called a DC-based nanogrid. For such distribution system, an efficient, stable and robust power management system is required. This paper proposes a novel 4-level DC-based home energy management system (DC HEMS), which is considering the efficiency of both energy conversion loss and cost. Numerical simulation results reveal that the proposed 4-level DC HEMS for DC-based nanogrid can achieve the efficiency improvement of 24.9% compared to the conventional 3-level DC HEMS in smart home environment.

[1]  Tan Yasuo,et al.  Simulation of Solar Photovoltaic and Fuel Cell Energy System for Smart Community Simulator , 2017 .

[2]  Enrique Rodriguez-Diaz,et al.  An overview of low voltage DC distribution systems for residential applications , 2015, 2015 IEEE 5th International Conference on Consumer Electronics - Berlin (ICCE-Berlin).

[3]  Weixing Li,et al.  On voltage standards for DC home microgrids energized by distributed sources , 2012, Proceedings of The 7th International Power Electronics and Motion Control Conference.

[4]  Kenji Tanaka,et al.  Conceptual Study for Open Energy Systems: Distributed Energy Network Using Interconnected DC Nanogrids , 2015, IEEE Transactions on Smart Grid.