Title :
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
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;
Conference_Titel :
Power Electronics Conference (IPEC), 2010 International
Conference_Location :
Sapporo
Print_ISBN :
978-1-4244-5394-8
DOI :
10.1109/IPEC.2010.5543501
