Experimental study of a 400 V class DC microgrid for commercial buildings

Author

Noritake, M. ; Yuasa, K. ; Takeda, T. ; Shimomachi, K. ; Hara, R. ; Kita, H. ; Matsumura, T.

Author_Institution

NTT Facilities, Inc., Japan

fYear

2015

fDate

1-5 June 2015

Firstpage

1730

Lastpage

1735

Abstract

This paper reports the experimental study of a 400 V class DC microgrid for an office building that has been constructed in Obihiro City, Hokkaido, Japan. The objective of this study is to develop a self-sustained distributed energy system by combining distribution energies, batteries, and appliances with DC power. This new DC energy system not only reduces the environment load and improves energy efficiency but also forms a community energy system that can become independent from utility grids and resistant to natural disasters. We have found that compared with AC power supply, the DC system, which uses power generated by solar panels as is, decreases CO2 emission more than 10%.

Keywords

buildings (structures); distributed power generation; energy conservation; secondary cells; AC power supply; DC energy system; DC microgrid; DC power; DC system; Hokkaido; Japan; Obihiro City; appliances; batteries; commercial buildings; community energy system; distribution energies; energy efficiency; environment load; natural disasters; office building; self-sustained distributed energy system; solar panels; utility grids; voltage 400 V; Batteries; Energy management; Lithium; Meteorology; Power supplies; Rectifiers; System-on-chip; 380 VDC; CO2 emission; DC microgrid;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics and ECCE Asia (ICPE-ECCE Asia), 2015 9th International Conference on

Conference_Location

Seoul

Type

conf

DOI

10.1109/ICPE.2015.7168011

Filename

7168011