Monitoring of Photovoltaic System Performance Using Outdoor Suns-VOC

Monitoring of Photovoltaic System Performance Using Outdoor Suns-VOC
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使用室外太阳-VOC 监测光伏系统性能

DOI:
10.1016/j.joule.2020.11.007
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发表时间:
2021
期刊:
影响因子:
39.8
通讯作者:
Bowden, Stuart G.
Bowden, Stuart G.
中科院分区:
材料科学1区
文献类型:
--
作者:
Killam, Alexander C.;Karas, Joseph F.;Augusto, André;Bowden, Stuart G.

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光致发光器件的现场表征对于了解性能和退化机制至关重要,从而提高整体可靠性和寿命。目前的户外表征受限于后勤困难、多变的天气以及在高峰生产时间测量的要求。我们利用Suns-VOC,这是广泛用于实验室测量单个太阳能电池,并讨论了在扩展到室外系统的技术的障碍。我们演示了使用背板温度传感器和现场气象站的测量的归一化。尽管天气变化,VOC、理想因子和伪填充因子均落在实验室测量值的1%以内。它还表明,监测系统VOCat 0.05至0.1太阳,在最小的功率生产,提供了一个数字的优点,可以表明系统的早期退化。广泛的模拟表明,系统的阴影部分对测量的影响最小,允许该技术在所有天气条件下使用。
In-field characterization of photovoltaics is crucial to understand performance and degradation mechanisms, subsequently improving overall reliability and lifespans. Current outdoor characterization is limited by logistical difficulties, variable weather, and requirements to measure during peak production hours. We capitalize on Suns-VOC, which is widely used for laboratory measurements of single solar cells and discuss the barriers in extending the technique to outdoor systems. We demonstrate the normalization of measurements using both backsheet temperature sensors and on-site weather stations. Despite weather variation, VOC, ideality factor, and pseudo fill factor all fall within 1% of the laboratory measurements. It is also demonstrated that monitoring the system VOCat 0.05 to 0.1 suns, during minimal power production, provides a figure of merit that can indicate early degradation of the system. Extensive simulations show that shading portions of a system has minimal effect on measurements, allowing the technique to be used in all weather conditions.
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