ECN publication
Evaluatie meetresultaten 1 kWp a-Si PV-centrale te Petten
Published by: Publication date:
ECN 1995
ECN report number: Document type:
ECN-C--94-095 ECN publication
Number of pages: Full text:
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In the period June 1992 - May 1994 measurements were carried out on twogrid-connected photovoltaic (PV) power systems of 1 kWp, one on the basis of amorphous silicon and one on the basis of polycrystalline silicon. The measured results are presented and discussed. The PV systems are situated in the dunes at the Netherlands Energy Research Foundation (ECN) in Petten, Netherlands. The aim of the title project was to gain field experience under typical Dutch climatic conditions. Results indicate a high inverter efficiency but a drop in the dc system efficiency from 4% to 2.2%, due to defective modules and, to a smaller extent, intrinsic module degradation.
After replacement of the defective modules the efficiency of the total system was restored to 3.8%. A subarray consisting of original modules showed an efficiency of 3.5% after one year of operation. Apart from the module related problems that have been solved, it is concluded that the system operated very reliable. The efficiency of the polycrystalline silicon PV system was maximal 10%. The annual averaged efficiency of the dc/ac conversion was more than 90%.
8 figs., 9 tabs., 7 refs.

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