Author(s):	Mau, S.; Jahn, U.
Organization:	arsenal research, Business Area of Renewable Energy Technologies, Giefinggasse 2, A-1210 Vienna, Austria, Tel.: +43 (0) 50550 - 6652, Fax: +43 (0) 50550 – 6390, Email: Stefan.Mau@arsenal.ac.at Bavarian Center for Applied Energy Research (ZAE Bayern), Am Weichselgarten 7, D-91058 Erlangen, Germany,Tel.: +49-9131-691-295, Fax: +49-9131-691-181, Email: jahn@zae.uni-erlangen.de
Date of issue:	September 2006
Details:	5 pages: graphs, tables; with references
Type:	Paper IEA PVPS Task 2
Presented at:	21st European Photovoltaic Solar Energy Conference and Exhibition, 4-8 September 2006, Dresden, Germany
Download:	Open or download the paper as PDF file (267 kb) Open or download the slides of the presentation as PDF file (433 kb) Open or download the presented poster as PDF file (129 kb)
Abstract:	Performance, quality and reliability issues are becoming more and more important for the emerging photovoltaic markets worldwide. The purpose of this work is comparing and presenting operational performance results of grid-connected PV systems, as collected and elaborated for Task 2 of the Photovoltaic Power Systems Programme (PVPS) of the International Energy Agency (IEA). The data analyzed here are derived from analytical monitoring data, hourly values and 5-minute-values of 21 selected PV systems installed in five countries in Europe and Japan. Graphical analysis methods are used to identify the energy frequency distribution and to explain the operational system behaviour, of the inverter in particular. The performance ratio is analysed at identical climatic conditions by extracting data with identical module temperatures and irradiances to detect small shifts of system performance. This contribution describes and displays different approaches and methods of PV system performance analysis to understand and improve the operational behaviour of PV systems.

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