入射角对光伏组件可靠性的影响:经验教训

IF 6 3区 工程技术 Q2 ENERGY & FUELS
Solar RRL Pub Date : 2025-08-29 DOI:10.1002/solr.202500477
Nikoleta Kyranaki, Ismail Kaaya, Mohammed Adnan Hameed, Arnaud Morlier, Michaël Daenen
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引用次数: 0

摘要

为了最大限度地提高发电量,光伏(PV)系统设计人员优化了提高阵列平面辐照度的参数,其中组件倾角是一个关键因素。然而,较高的辐照也会提高操作温度,加速降解机制。虽然模拟提供了洞察力,但实验验证对于评估倾角对长期可靠性的影响至关重要。本研究提出了一项室内加速老化试验,复制了与倾斜角度有关的紫外线暴露变化。钝化的发射极和后触点(PERC) c-Si微型模块经过可控的紫外线浸泡、高温和湿度,以模拟长时间的室外环境。通过I-V曲线测量和电致发光成像监测降解情况。封装剂变色和光漂白主要降低了短路电流(ISC),而硼氧光诱导降解(BO-LID)和光和高温诱导降解(LeTID)导致了ISC和开路电压(VOC)损失。不同倾斜角度的紫外线剂量分别为34、17和6.5 kWh/m2,最大功率(Pmax)分别降低0.79%、0.61%和0.35%。这些结果强调了在PERC和其他c-Si光伏技术中进一步研究BO-LID和LeTID的必要性。观测到的倾角效应不能推广到长期退化。为了得出最终的结论,需要通过对模块应用稳定化方法并随后将数据拟合到退化模型中来进一步研究长期影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

The Influence of Incidence Angle on the Reliability of Photovoltaic Modules: Lessons Learned

The Influence of Incidence Angle on the Reliability of Photovoltaic Modules: Lessons Learned

To maximize energy yield, photovoltaic (PV) system designers optimize parameters that enhance plane-of-array irradiance, with module tilt angle being a key factor. However, higher irradiation also raises operating temperatures, accelerating degradation mechanisms. While simulations offer insight, experimental validation is essential to assess tilt angle impacts on long-term reliability. This study presents an indoor accelerated aging test replicating variations in UV exposure linked to tilt angle. passivated emitter and rear contact (PERC) c-Si mini-modules underwent controlled UV soaking, elevated temperatures, and humidity to replicate prolonged outdoor conditions. Degradation was monitored through I–V curve measurements and electroluminescence imaging. Encapsulant discoloration and photobleaching primarily reduced short-circuit current (ISC), while boron-oxygen light-induced degradation (BO-LID) and light and elevated temperature-induced degradation (LeTID) contributed to ISC and open-circuit voltage (VOC) losses. Further UV doses of 34, 17, and 6.5 kWh/m2, representing different tilt angles, caused maximum power (Pmax) reductions of 0.79%, 0.61%, and 0.35%, respectively. These results highlight the need for further study of BO-LID and LeTID in PERC and other c-Si PV technologies. The observed tilt angle effects cannot be generalized to long-term degradation. Further investigation into long-term impact by applying stabilization methods to the modules and afterward fitting the data to degradation models is needed to draw final conclusions.

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来源期刊
Solar RRL
Solar RRL Physics and Astronomy-Atomic and Molecular Physics, and Optics
CiteScore
12.10
自引率
6.30%
发文量
460
期刊介绍: Solar RRL, formerly known as Rapid Research Letters, has evolved to embrace a broader and more encompassing format. We publish Research Articles and Reviews covering all facets of solar energy conversion. This includes, but is not limited to, photovoltaics and solar cells (both established and emerging systems), as well as the development, characterization, and optimization of materials and devices. Additionally, we cover topics such as photovoltaic modules and systems, their installation and deployment, photocatalysis, solar fuels, photothermal and photoelectrochemical solar energy conversion, energy distribution, grid issues, and other relevant aspects. Join us in exploring the latest advancements in solar energy conversion research.
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