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Title:
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Analytical monitoring of losses in PV systems
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Author(s):
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Published by:
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Publication date:
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ECN
Solar Energy
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1997
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ECN report number:
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Document type:
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ECN-RX--97-043
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Article (scientific)
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Number of pages:
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6
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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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