A Methodology for Estimating the Effect of Solar Spectrum on Photovoltaic Module Performance by Using Average Photon Energy and a Water Absorption Band
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概要
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Various photovoltaic (PV) technologies are commercially available today. The effect of solar spectrum on the performance of PV modules should be evaluated quantitatively in order to estimate the module performance with high accuracy and precision. Average photon energy (APE) has been frequently applied to evaluate the effect of solar spectrum. The purpose of this study is to enhance the precision and accuracy by introducing other indexes. In this study, we select solar spectra, the integrated spectral irradiance (ISI) and APE of which are equivalent to those of the standard AM1.5G spectrum. There is a slight difference in shape, although the shapes are approximately similar. We introduce one more index, which defines the spectral irradiance at the atmospheric window or the depth of the water absorption band. The introduction would further improve the accuracy and precision of the evaluation of the effect of solar spectrum.
- 2012-10-25
著者
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Itagaki Akihiko
Environment Department, Japan Weather Association (JWA), Toshima, Tokyo 170-6055, Japan
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Otani Kenji
Research Center for Photovoltaic Technologies, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki 305-8568, Japan
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Utsunomiya Kenji
Environment Department, Japan Weather Association (JWA), Toshima, Tokyo 170-6055, Japan
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Ishii Tetsuyuki
Research Center for Photovoltaic Technologies, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki 305-8568, Japan