Ionomer-Based PiD-Resistant Encapsulant for PV Modules
| Autor: | Pop, S.C., Schulze, R., Wang, X., Yuan, B., Kapur, J., Stika, K.M., Westphal, C., Antoniadis, H., Meisel, A. |
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| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Předmět: | |
| DOI: | 10.4229/eupvsec20142014-1bv.6.37 |
| Popis: | 29th European Photovoltaic Solar Energy Conference and Exhibition; 152-157 The recent shift in inverter technology is the availability of transformerless (TL) inverters. Currently, most of the major inverter manufacturers have added a transformerless option to their existing inverter portfolio in different markets. The new types of inverters have increased efficiency yielding similar output at significantly reduced size, compared to the traditional ones. However, the voltage in such ungrounded systems can be as high as 1500 Vdc, which increases the demand for modules with potential induced degradation (PID) resistive properties, since the new TL inverters cannot be grounded on the DC side due to safety concerns. The present study is focused on the evaluation of two representative traditional types of encapsulant materials, standard EVA and PID-resistant EVA compared against an Ionomerbased encapsulant, all of which were tested in full-size modules using PID-prone cells. It is demonstrated that the severe degradation seen in standard Ethylene vinyl acetate (EVA) can be fully suppressed by inserting a 100 μm thin Ionomer layer between the front glass and EVA. The results were confirmed in modules fabricated on Yingli’s production line in Baoding, China. |
| Databáze: | OpenAIRE |
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