DocumentCode :
413304
Title :
High performance ratios of a double-junction a-Si BIPV grid-connected installation after five years of continuous operation in Brazil
Author :
Rüther, Ricardo ; Knob, Paulo ; Beyer, Hans Georg ; Dacoregio, Marcelo M. ; Montenegro, Alexandre A.
Author_Institution :
Dept. de Engenharia Civil, Univ. Fed. de Santa Catarina, Florianopolis, Brazil
Volume :
3
fYear :
2003
fDate :
18-18 May 2003
Firstpage :
2169
Abstract :
In September 1997 LABSOLAR, at Universidade Federal de Santa Catarina, installed the first grid-connected, thin-film, building-integrated PV system in Brazil. In this fully monitored installation, irradiation levels, temperatures and electrical performance data are measured and logged continuously. The AC and DC performance ratios (PR=ratio of actual to expected output) of this 2 kWp double-junction a-Si PV system after over five years of continuous operation have stabilized at an average of 82% and 92% respectively, with annual energy yields of /spl sim/1300 kWh/kWp for a /spl sim/1500 kWh/m/sup 2/ annual plane-of-array radiation level at the site. Our results show that in the stabilized state the PR is independent of the cell operating temperature, indicating a negligible temperature coefficient of power and good performance when operated at a warm site. Under the conditions described, undersizing the inverter with respect to the PV array power might lead to considerable power losses.
Keywords :
amorphous semiconductors; building integrated photovoltaics; elemental semiconductors; semiconductor thin films; silicon; solar cell arrays; PV array power; Si; ac performance ratio; array radiation level; building integrated photovoltaic system; cell operating temperature; dc performance ratio; double junction amorphous Si grid connected system; electrical properties; grid connected thin film; irradiation levels; power losses; power temperature coefficient;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Photovoltaic Energy Conversion, 2003. Proceedings of 3rd World Conference on
Conference_Location :
Osaka, Japan
Print_ISBN :
4-9901816-0-3
Type :
conf
Filename :
1305014
Link To Document :
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