STUDY ON IMPROVEMENT OF ANTT-SHADOW POWER GENERATION PERFORMANCE OF BUILDING PHOTOVOLTAIC SYSTEMS BY POWER OPTIMIZERS

Yu Qinglong; Bai Jianbo; Zheng Shuang; Nie Haiyuan; Li Jian

doi:10.19912/j.0254-0096.tynxb.2024-0974

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Acta Energiae Solaris Sinica ›› 2025, Vol. 46 ›› Issue (10) : 544-552. DOI: 10.19912/j.0254-0096.tynxb.2024-0974

STUDY ON IMPROVEMENT OF ANTT-SHADOW POWER GENERATION PERFORMANCE OF BUILDING PHOTOVOLTAIC SYSTEMS BY POWER OPTIMIZERS

Yu Qinglong¹, Bai Jianbo², Zheng Shuang¹, Nie Haiyuan¹, Li Jian¹

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Abstract

This paper investigates the impact of photovoltaic power optimizers on building integrated photovoltaics（BIPV） systems under shading mismatch conditions. First, three different string shading scenarios were designed. Based on the shading ratios on the module surfaces are known, simulations were conducted to compare the power generation with and without the optimizers. Then, an experimental platform was set up to compare the simulated data with the measured data, verifying the accuracy of the simulation model. Finally, the BIPV glass curtain wall of the Antuoshan Photovoltaic Building in Shenzhen was taken as the study object. A comprehensive shading analysis was performed on each module over the course of a year （8,760 hours）. The system power generation was discussed under three conditions： without optimizers, with optimizers installed only in shaded areas, and with optimizers installed on all modules. The results indicate that the power optimizer's impact on the power generation of building photovoltaic systems is influenced by shading. In months when the strings are unevenly shaded, installing power optimizers can increase power generation by up to 9.48%. Additionally, when all modules are equipped with optimizers, the overall system power generation increases by 1.13%.

Key words

photovoltaic power generation / solar irradiance / PV system / BIPV / photovoltaic power optimizer / shading

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Yu Qinglong, Bai Jianbo, Zheng Shuang, Nie Haiyuan, Li Jian. STUDY ON IMPROVEMENT OF ANTT-SHADOW POWER GENERATION PERFORMANCE OF BUILDING PHOTOVOLTAIC SYSTEMS BY POWER OPTIMIZERS[J]. Acta Energiae Solaris Sinica. 2025, 46(10): 544-552 https://doi.org/10.19912/j.0254-0096.tynxb.2024-0974

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