An adjustable high-flux LED solar simulator based on dome structure

IF 3.5 3区 工程技术 Q3 ENERGY & FUELS
Chang-Wen Xue, Jia-Yong Song, Ze-Sheng Qin, Li-Feng Bian, Zi-Jiang Luo, Chen Yang
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Abstract

High-flux solar simulator (HFSS) commonly serves as a vital instrument for conducting material testing and thermochemical experiments, offering valuable applications in the fields of photovoltaic cells and concentrated solar energy. This paper proposes a continuously adjustable HFSS based on light-emitting diodes (LEDs), which can be employed for experimental testing in the solar cell aging. First, an irradiation unit module has been built using high-power LEDs and total internal reflection lenses, and the irradiation performance of the single unit has been validated. In theory, a dome layout model is proposed, in which a detailed geometric analysis is provided for the maximum number of units that can be accommodated on the dome, considering unit size and dome dimensions. Subsequently, aluminum disc has been used as thermal flux sensors, and the irradiation distribution of the system is characterized using a charge-coupled device observation camera and Lambertian board. The results indicate that the system offers an adjustable average flux ranging from 1.6 to 9.04 kW/m2 when the system input current is in the range of 7.2–54 A. Additionally, the system demonstrates a spatial nonuniformity of 2% within a 10-mm diameter (Φ = 10 mm) region test region and temporal instability of 2% within 30 min.

Abstract Image

基于圆顶结构的可调节高通量 LED 太阳能模拟器
高通量太阳能模拟器(HFSS)通常是进行材料测试和热化学实验的重要仪器,在光伏电池和聚光太阳能领域具有重要的应用价值。本文提出了一种基于发光二极管(LED)的连续可调 HFSS,可用于太阳能电池老化实验测试。首先,利用大功率 LED 和全内反射透镜构建了一个辐照单元模块,并验证了单个单元的辐照性能。理论上,我们提出了一个穹顶布局模型,其中考虑到单元尺寸和穹顶尺寸,对穹顶上可容纳的最大单元数量进行了详细的几何分析。随后,使用铝圆盘作为热通量传感器,并使用电荷耦合器件观测相机和朗伯板对系统的辐照分布进行了表征。结果表明,当系统输入电流在 7.2-54 A 范围内时,该系统可提供 1.6-9.04 kW/m2 的可调平均通量。此外,该系统在直径为 10 mm(Φ = 10 mm)的测试区域内显示出 2% 的空间不均匀性,在 30 分钟内显示出 2% 的时间不稳定性。
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来源期刊
Energy Science & Engineering
Energy Science & Engineering Engineering-Safety, Risk, Reliability and Quality
CiteScore
6.80
自引率
7.90%
发文量
298
审稿时长
11 weeks
期刊介绍: Energy Science & Engineering is a peer reviewed, open access journal dedicated to fundamental and applied research on energy and supply and use. Published as a co-operative venture of Wiley and SCI (Society of Chemical Industry), the journal offers authors a fast route to publication and the ability to share their research with the widest possible audience of scientists, professionals and other interested people across the globe. Securing an affordable and low carbon energy supply is a critical challenge of the 21st century and the solutions will require collaboration between scientists and engineers worldwide. This new journal aims to facilitate collaboration and spark innovation in energy research and development. Due to the importance of this topic to society and economic development the journal will give priority to quality research papers that are accessible to a broad readership and discuss sustainable, state-of-the art approaches to shaping the future of energy. This multidisciplinary journal will appeal to all researchers and professionals working in any area of energy in academia, industry or government, including scientists, engineers, consultants, policy-makers, government officials, economists and corporate organisations.
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