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首页> 外文会议>European Photovoltaic Solar Energy Conference and Exhibition >ROUND ROBIN TESTING OF VARIOUS BACK-SHEETS FOR PV-MODULES WITH DIFFERENT ULTRAVIOLET RADIATION SOURCES AND SAMPLE TEMPERATURES
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ROUND ROBIN TESTING OF VARIOUS BACK-SHEETS FOR PV-MODULES WITH DIFFERENT ULTRAVIOLET RADIATION SOURCES AND SAMPLE TEMPERATURES

机译：用于PV模块的各种背板的循环测试，具有不同的紫外线辐射源和样品温度

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Durability testing of materials exposed to natural weathering requires testing of the UV stability, especially for polymeric materials. The type approval testing of PV-modules according to the standards IEC 61215 and IEC 61646 includes a so-called UV-preconditioning test with a total UV dose of 15 kWh/m~2 not corresponding to the real loads during lifetime. Between 3- 10% of the UV radiation has to be in the spectral range between 280nm and 320nm in the recent editions of the standards. However, the spectral distribution of the radiation source is very important since the samples show a very individual spectral sensitivity for the radiation offered. Less than 6% of the intensity of solar radiation comes in the UV range. In case of an increase of the intensity of the light source for accelerating the UV-test the overheating of the samples would have to be prevented more strictly and the temperature of the samples have to be measured in order to avoid misinterpretation of the test results. Fraunhofer ISE organized an inter-laboratory comparison of testing different back-sheets with different UV-light sources in various test laboratories using different UV-sources. The interaction of the UV-radiation with the polymers used in PV-modules is main subject of this round robin. Laminates were produced by using solar glass (130mm * 200mm) and a respective EVA encapsulant combined with 7 different back-sheets. The sample was exposed in a sample holder equipped with a couple of different filters in order to investigate roughly the spectral sensitivity by means of 3 edge filters and the intensity impact by two grating filters. The sample temperature was measured by thermo-couples. The degradation was followed by spectral reflectance and transmittance measurements and calculation of the yellowness-index. Clear differences in the degradation behavior of the different products were found.
机译：暴露于自然风化的材料的耐久性测试需要测试UV稳定性，特别是对于聚合物材料。根据标准IEC 61215和IEC 61646的PV模块的类型批准测试包括所谓的UV预处理试验，总UV剂量为15 kWh / m〜2，其在寿命期间的实际载荷。在最近的标准版本中，3-10％的UV辐射必须在280nm和320nm之间的光谱范围内。然而，辐射源的光谱分布非常重要，因为样品显示出提供的辐射的非常个性的光谱灵敏度。不到6％的太阳辐射强度来自UV范围。在加速UV检测的光源强度的增加的情况下，必须更严格地预防样品的过热，并且必须测量样品的温度以避免测试结果的误解。 Fraunhofer ISE组织了使用不同的紫外源在各种测试实验室中使用不同的UV光源测试不同背板的实验室比较。 UV辐射与PV-模块中使用的聚合物的相互作用是该循环的主要主题。通过使用太阳能玻璃（130mm * 200mm）和相应的EVA密封剂与7种不同的背板组合生产层压材料。将样品暴露在配备有几个不同过滤器的样品座中，以便通过3个边缘滤光器和两个光栅过滤器的强度撞击来研究大致的光谱灵敏度。通过热耦合测量样品温度。劣化之后是光谱反射率和透射率测量和黄色指数的计算。发现了不同产品的降解行为的清晰差异。

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