In this paper, the equatorial coordinate system is taken as the celestial coordinates, and the two-sided photovoltaic module irradiance model is established by using the MATLA simulation software, and the two-sided photovoltaic module irradiance model is combined with the photovoltaic module model to form the mathematical model of the real-time generation system of two-sided photovoltaic modules.The effectiveness of the simulation model was verified by building an experimental platform, and the output characteristics of the optimal line spacing between the double-sided pv module and the single-sided pv module were further tested and compared.