Loss evaluation of DC distribution for residential houses compared with AC system

Author

Kakigano, H. ; Nomura, M. ; Ise, T.

Author_Institution

Osaka Univ., Suita, Japan

fYear

2010

fDate

21-24 June 2010

Firstpage

480

Lastpage

486

Abstract

In this paper, loss of a dc microgrid system for residential complex is compared with loss in an ac system. Each system has a PV system, a gas engine cogeneration and 20 residential houses. The losses are calculated from measured load data and PV output data which was estimated from global solar radiation and temperature of a PV panel. The operation of the gas engine cogeneration is determined from the heat demands. As house loads, we consider an air conditioner, a refrigerator, a washing machine and a liquid crystal display (LCD) in each house. The loss calculation result shows the total losses in the dc system are around 15% lower than the losses in the ac system.

Keywords

cogeneration; distributed power generation; photovoltaic power systems; AC system; DC distribution; DC microgrid system; PV output data estimation; PV panel temperature; PV system; air conditioner; gas engine cogeneration; global solar radiation; liquid crystal display; load data estimation; loss evaluation; refrigerator; residential houses; washing machine; Cogeneration; Distributed control; Engines; Floors; Power supplies; Refrigeration; Renewable energy resources; Solar radiation; Temperature; Voltage; dc distribution; distributed generation; efficiency; microgrid; power losses;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics Conference (IPEC), 2010 International

Conference_Location

Sapporo

Print_ISBN

978-1-4244-5394-8

Type

conf

DOI

10.1109/IPEC.2010.5543501

Filename

5543501