Uncertainty analysis of solar simulator's spectral irradiance measurement

Haifeng Meng; Limin Xiong; Yingwei He; Dingpu Liu; Jieyu Zhang; Wenxin Li

doi:10.1117/12.971190

15 October 2012 Uncertainty analysis of solar simulator's spectral irradiance measurement

Haifeng Meng, Limin Xiong, Yingwei He, Dingpu Liu, Jieyu Zhang, Wenxin Li

Proceedings Volume 8419, 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optoelectronic Materials and Devices for Sensing, Imaging, and Solar Energy; 84193A (2012) https://doi.org/10.1117/12.971190
Event: 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies (AOMATT 2012), 2012, Xiamen, China

Abstract

Solar simulator is a key instrument for photovoltaic field, which aims to act the role of natural sunlight irradiance indoor, and we should identify how similar they are in quantity. The critical factor of similarity lies in its spectral irradiance, because of solar cells’ wavelength-dependent spectral responsivity, spectral mismatch of solar simulator and sunlight can induce large errors during characteristic parameters measurement. In this article, a method for measuring solar simulator’s spectral irradiance was proposed along with its uncertainty analysis. A calibrated fiber optic spectrometer was employed here for spectral measurement, which was used for calibrating various kinds of solar simulators manufactured with different mechanisms. Considering three main sources of measurement uncertainty, that is, the declared uncertainty of the calibrated spectrometer (u₁), cosine correction (u₂) and repeatability of measurement (u₃), we estimated its combined expanded uncertainty is U = 6.2% (with coverage factor k = 2). Also, we have made a comparison of our spectral measurement results with methods traceable to other country’s national institute of metrology, such as NIST traceable. This work is significant for the performance calibration and classification of solar simulators, so that plays a great role in solar energy industry.

Citation Download Citation

Haifeng Meng, Limin Xiong, Yingwei He, Dingpu Liu, Jieyu Zhang, and Wenxin Li "Uncertainty analysis of solar simulator's spectral irradiance measurement", Proc. SPIE 8419, 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optoelectronic Materials and Devices for Sensing, Imaging, and Solar Energy, 84193A (15 October 2012); https://doi.org/10.1117/12.971190

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