NDLI: Advanced analysis of PV system performance using normalised measurement data

Content Provider	IEEE Xplore Digital Library
Author	Ransome, S.J. Wohlgemuth, J.H. Poropat, S. Aguilar, E.
Copyright Year	2005
Description	Author affiliation: BP Solar, UK (Ransome, S.J.)
Abstract	The performance of grid connected systems is usually reported by AC energy (kWh/kWp) and performance ratio (PR) values (S. Ransome et al., 2003). If there are any outages or underperformance due to temporary faults or effects like shading these all need to be carefully corrected to give a true value for the performance otherwise these systems specific losses can dominate comparative kWh/kWp values. This paper proposes a way of calculating system performance using the final yield YF and the performance ratio versus plane of array irradiance G/sub 1/. When the system is performing well the data points are in a narrow range that can be curve fitted with empirical formulae. Underperforming points (which may depend on random events like outages) can be easily identified, as they are not lying on the narrow line. The expected yield in kWh/kWp can then be determined by folding in the curve fit to the good performance points by the expected irradiance and temperature data. These techniques are being used to test different module technologies and improvements such as anti reflection coated glass in Sydney, Australia and at ISET in Kassel, Germany.
Sponsorship	IEEE Electron Devices Soc. (USA)
Starting Page	1698
Ending Page	1701
File Size	684361
Page Count	4
File Format	PDF
ISBN	0780387074
ISSN	01608371
DOI	10.1109/PVSC.2005.1488475
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-01-03
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Performance analysis System performance Australia Performance loss Voltage Silicon compounds System testing Reflection Glass Temperature
Content Type	Text
Resource Type	Article
Subject	Industrial and Manufacturing Engineering Control and Systems Engineering Electrical and Electronic Engineering

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