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Determination of Individual Concentrator Tolerances from Full-Array I-V Curve Measurements
P. Zamora Herranz, P. Benítez, J.C. Miñano, J. Chaves
Module Manufacturing, PV Array, Concentrator
Advanced Photovoltaics: New Concepts and Ultra-high Efficiency
Subtopic: Terrestrial Concentrator Systems
Event: 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion, 6-10 September 2010, Valencia, Spain
Session: 1DV.5.25
926 - 929
ISBN: 3-936338-26-4
Paper DOI: 10.4229/25thEUPVSEC2010-1DV.5.25
0,00 EUR
Document(s): paper


When dealing with CPV manufacturing process, tolerances are critical in order to obtain a low cost massproduction system. Usually the efficiency attained by a whole module array is smaller than the average efficiency of every single module. This downside is due to the well-known mismatch losses introduced by the cell series connection. For this reason, we present a novel mathematical method to calculate photocurrent versus pointing angle curves for the single-cell modules, with the only information of photocurrent versus pointing angle measurements for the whole module array. In this way we can estimate the mismatch losses for a given array just by analyzing its full-array I-V curve. Thus, the great breakthrough about this method lies in no single-cell module measurement is needed. The application of this method allows the measurement of the real tolerances of any CPV system.