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|Title:||Towards a model for a-Si modules performance behavior under real outdoor operating conditions|
|Authors:||POLVERINI DAVIDE; KENNY Robert; HULD Thomas; TZAMALIS GEORGIOS|
|Citation:||SOLAR ENERGY vol. 116 p. 388-398|
|Publisher:||PERGAMON-ELSEVIER SCIENCE LTD|
|Type:||Articles in periodicals and books|
|Abstract:||Since the first research studies in the 1970s, the metastable behaviour of amorphous silicon thin film photovoltaic modules has yet to be fully understood. In this paper a quantitative model for the performance of thin film amorphous and micromorph modules is presented. The first part of the experimental study consists of periodic indoor measurements of I-V characteristics on a set of six modules, both single and multijunction, during a one year period of outdoor exposure. In the second part, light soaking and thermal annealing cycles were performed indoors on the same modules. The goal of the present research is to assess how the performance of a module is affected by the operating conditions, mainly temperature and irradiance, both of which contribute to a seasonal variation in its performance. For this purpose, a quantitative model is developed that takes into account both of these two contributions; the results show a good agreement between experimental and theoretical data. Further developments and model improvements are proposed and discussed.|
|JRC Directorate:||Energy, Transport and Climate|
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