RESEARCH ON IRRADIANCE GAIN OF PHOTOVOLTAIC MODULES

Liao Dongjin; Fang Xiaomin; Huang Zhiping

doi:10.19912/j.0254-0096.tynxb.2021-0370

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Acta Energiae Solaris Sinica ›› 2022, Vol. 43 ›› Issue (5) : 113-118. DOI: 10.19912/j.0254-0096.tynxb.2021-0370

RESEARCH ON IRRADIANCE GAIN OF PHOTOVOLTAIC MODULES

Liao Dongjin¹, Fang Xiaomin¹, Huang Zhiping^1,2

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Abstract

For effectively analyzing the irradiance gain of bifacial PV modules and single-axis PV modules with ray tracing technique in contrasting to single-axis PV modules with a fixed tilt, an irradiance model of single-axis bifacial PV modules was established on the basis of the visual factor method and the daily trajectory characteristics of fixed tilt and single-axis. The testing and analysis demonstrated that the irradiance gain of bifacial, single-axis, and single-axis bifacial in the Hangzhou district were 0.076, 0.078, and 0.161, respectively, in the condition of array width of 2 m, row distance of 5 m, assembly height of 2 m, ground reflectance of 0.2, and double-sided coefficient of 0.75. In addition, the bifacial gain will be greater in the case of a higher horizontal component of scattered radiation. whereas, the single-axis gain can be increased greatly only in the condition of a higher horizontal component of direct radiation. These results can be theoretical guidance for the installation and application of single-axis and bifacial PV modules in different areas.

Key words

solar irradiance / single-axis / view factor / bifacial PV module / tracking

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Liao Dongjin, Fang Xiaomin, Huang Zhiping. RESEARCH ON IRRADIANCE GAIN OF PHOTOVOLTAIC MODULES[J]. Acta Energiae Solaris Sinica. 2022, 43(5): 113-118 https://doi.org/10.19912/j.0254-0096.tynxb.2021-0370

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