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Rear‐side spectral irradiance at 1 sun and application to bifacial module power rating
Progress in Photovoltaics ( IF 8.0 ) Pub Date : 2020-03-20 , DOI: 10.1002/pip.3268 Christos Monokroussos 1 , Qi Gao 1 , XiaoYu Zhang 1 , Eleanor Lee 1 , Yihong Wang 1 , Chris Zou 1 , Lorenz Rimmelspacher 2 , Johanna Bonilla Castro 2 , Markus Schweiger 2 , Werner Herrmann 2
Progress in Photovoltaics ( IF 8.0 ) Pub Date : 2020-03-20 , DOI: 10.1002/pip.3268 Christos Monokroussos 1 , Qi Gao 1 , XiaoYu Zhang 1 , Eleanor Lee 1 , Yihong Wang 1 , Chris Zou 1 , Lorenz Rimmelspacher 2 , Johanna Bonilla Castro 2 , Markus Schweiger 2 , Werner Herrmann 2
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The air mass 1.5 global (AM1.5G) reference spectral irradiance distribution is defined in the international standard IEC 60904‐3, accounts for the direct, diffuse, and albedo components directing 1000 W/m2 (1 sun) of global irradiance at a photovoltaic (PV) module's front side. Bifacial PV modules, however, receive an additional irradiance contribution from the rear side, which is not accounted for in the reference irradiance. This work strives to shed light on the amount of expected light that arrives on the rear side of a PV module, when the front‐side irradiance and ambient conditions match the conditions used for the calculation of AM1.5G. For this purpose, an optical model was developed to simulate the rear‐side spectral irradiance of PV modules, whose validity was verified by outdoor measurements. The results show that the average rear‐side irradiance at a set of conditions as defined in IEC 60904‐3 lies in the range of 130 to 150 W/m2. The results of this work lay the foundation to define the bifacial Standard Test Conditions (BSTC), which can be used to support the technical specification IEC TS 60904‐1‐2 and international standard IEC 60904‐3 and establish supplementary requirements for the power rating and label verification of bifacial PV modules.
中文翻译：
1个太阳下的后部光谱辐照度和应用于双面模块的额定功率
国际标准IEC 60904-3中定义了全球1.5空气质量（AM1.5G）参考光谱辐照度分布，考虑了直接，漫反射和反照率分量的1000 W / m 2方向光伏（PV）模块正面的（1太阳）总辐照度。但是，双面光伏模块从背面获得额外的辐照度贡献，这在参考辐照度中没有考虑。当前端的辐照度和环境条件与用于计算AM1.5G的条件相匹配时，本工作力求阐明到达光伏模块背面的预期光量。为此，开发了一个光学模型来模拟光伏组件的后部光谱辐照度，其有效性已通过室外测量得到了验证。结果表明，按照IEC 60904-3的规定，一组条件下的平均背面照度在130至150 W / m 2的范围内。。这项工作的结果为定义双面标准测试条件（BSTC）打下了基础，该标准可用于支持技术规范IEC TS 60904-1-2和国际标准IEC 60904-3并建立额定功率的补充要求双面光伏组件的标签验证。
更新日期：2020-03-20
中文翻译：
1个太阳下的后部光谱辐照度和应用于双面模块的额定功率
国际标准IEC 60904-3中定义了全球1.5空气质量（AM1.5G）参考光谱辐照度分布，考虑了直接，漫反射和反照率分量的1000 W / m 2方向光伏（PV）模块正面的（1太阳）总辐照度。但是，双面光伏模块从背面获得额外的辐照度贡献，这在参考辐照度中没有考虑。当前端的辐照度和环境条件与用于计算AM1.5G的条件相匹配时，本工作力求阐明到达光伏模块背面的预期光量。为此，开发了一个光学模型来模拟光伏组件的后部光谱辐照度，其有效性已通过室外测量得到了验证。结果表明，按照IEC 60904-3的规定，一组条件下的平均背面照度在130至150 W / m 2的范围内。。这项工作的结果为定义双面标准测试条件（BSTC）打下了基础，该标准可用于支持技术规范IEC TS 60904-1-2和国际标准IEC 60904-3并建立额定功率的补充要求双面光伏组件的标签验证。
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