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ECN publication
Title:
Analytical monitoring of losses in PV systems
 
Author(s):
Baltus, C.W.A.; Eikelboom, J.A.; Zolingen, R.J.C. van
 
Published by: Publication date:
ECN Solar Energy 1997
 
ECN report number: Document type:
ECN-RX--97-043 Article (scientific)
 
Number of pages:
6  

Published in: Paper, presented at the 14th European photovoltaic solar energy conference and exhibition, 30 June - 4 July 1997, Barcelona, Spa (), , , Vol., p.-.

Abstract:
The performance of a photovoltaic (PV) system can be characterised by thePerformance Ratio. The performance ratio can be measured by means of global monitoring and is based on only a few measured variables. The meaning of this indicator is limited to a global impression of the performance, as there is no way to identify improperly functioning components. This paper describes a method to characterise the performance of the PV system in more detail. It is based on analytical monitoring and makes distinction between different types of losses. Low irradiance losses, resistance losses, inverter losses, shading losses and temperature losses, etc., can be determined with suitable software. Lost energy due to improperly functioning components can be charted in an easy way. 5 figs., 1 tab., 4 refs.


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