Contact-free determination of ethylene vinyl acetate crosslinking in PV modules with fluorescence emission
Contact-free determination of ethylene vinyl acetate crosslinking in PV modules with fluorescence emission
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DOI：
10.1016/j.egypro.2014.08.101
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发表时间：
2014
期刊：
影响因子：
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通讯作者：
Arnaud Morlier;M. Köntges;S. Blankemeyer;I. Kunze
中科院分区：
文献类型：
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作者：
Arnaud Morlier;M. Köntges;S. Blankemeyer;I. Kunze
醋酸乙烯酯（EVA）的交联度是光伏组件可靠性的决定性因素。许多化学或物理方法可用于确定EVA材料中交联反应的程度。通常和最准确的是破坏性的，因为它们需要从模块中获取材料样本。本文提出了一种基于荧光光谱的非接触、无损监测EVA交联过程的方法。我们展示了EVA在紫外线照射下的荧光发射强度与用流变学方法确定的固化等级的相关性。这种方法对层压过程中交联的在线监测和生产后的质量控制很有意义。
The degree of crosslinking of ethylene vinyl acetate (EVA) is a decisive factor for the photovoltaic (PV) modules reliability. Numerous chemical or physical methods may be applied to determine the extent of crosslinking reaction in the EVA material. The usual and most accurate ones are destructive as they require a sample of material from the module. In this work we present a contactless and non-destructive method for monitoring the crosslinking process of EVA based on fluorescence spectroscopy. We show the correlation of fluorescence emission intensity of EVA when submitted to UV light with its curing grade determined by a rheological method. This approach is of interest for in-line monitoring of the crosslinking during the lamination step and for quality control after production.