Journal ArticleDOI
Detection and analysis of hot-spot formation in solar cells
Michael Simon,Edson L. Meyer +1 more
TLDR
In this paper, infrared thermography (IR) was used to map the surface temperature distribution of solar cells while in the reverse bias mode, and it was observed that some cells exhibited an inhomogeneity of the surface temperatures resulting in localized heating (hot-spot).About:
This article is published in Solar Energy Materials and Solar Cells.The article was published on 2010-02-01. It has received 181 citations till now. The article focuses on the topics: Solar cell.read more
Citations
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Journal ArticleDOI
Improved outdoor thermography and processing of infrared images for defect detection in PV modules
M. Waqar Akram,Guiqiang Li,Yi Jin,Xiao Chen,Changan Zhu,Xudong Zhao,Muhammad Aleem,Ashfaq Ahmad +7 more
TL;DR: In this article, an improved outdoor infrared (IR) thermography scheme is presented, which is based on modulating the temperature of PV module through altering the electrical behavior of single cell, that causes temperature changes in series connected cells leading to different temperature conditions.
Proceedings ArticleDOI
Hot Spot Risk Analysis on Silicon Cell Modules
TL;DR: In this article, the authors present an overview of existing and new approaches for the hot spot analysis of crystalline silicon cells, which can be used for screening of large lots of finished modules or as a final test in module production.
Journal ArticleDOI
Survey of maintenance management for photovoltaic power systems
TL;DR: An exhaustive literature review and updated survey on maintenance of photovoltaic plants, and a novel analysis of the current state and a discussion of the future trends and challenges in this field are presented.
Journal ArticleDOI
Reconfiguration of PV modules: A tool to get the best compromise between maximization of the extracted power and minimization of localized heating phenomena
TL;DR: By means of the reconfiguration of the PV modules connections and with the help of a proper objective function, it is shown that it is possible to identify, in any operating condition, both the optimal array configuration and the associated optimal operating point that are able to lead to the maximization of the extracted energy during the whole PV array lifetime.
Journal ArticleDOI
Real-time inspection and determination methods of faults on photovoltaic power systems by thermal imaging in Turkey
Mete Cubukcu,A. Akanalci +1 more
TL;DR: The results showed that the sampling rate of testing is very critical to get a right comparison and failure types are mainly caused due to active bypass diodes and hotspots on PV modules, non-operative modules and strings, abnormally heated cables/fuses/breakers and interconnection points.
References
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Journal ArticleDOI
Shunt Types in Crystalline Silicon Solar Cells
TL;DR: In this article, nine different types of shunt have been found in state-of-the-art mono and multicrystalline solar cells by lock-in thermography and identified by SEM investigation.
Proceedings ArticleDOI
Hot spot investigations on PV modules-new concepts for a test standard and consequences for module design with respect to bypass diodes
TL;DR: The selection of the worst case cell should be improved by measurement of the module current at the characteristic break point of the I-V characteristic, and the hot-spot test procedure of IEC 1215 should be generalised for all types of cell interconnection circuits.
Journal ArticleDOI
Transition-metal profiles in a multicrystalline silicon ingot
TL;DR: In this paper, the concentrations of transition-metal impurities in a photovoltaic-grade multicrystalline silicon ingot have been measured by neutron activation analysis, and the results show that the concentration of Fe, Co, and Cu are determined by segregation from the liquid-to-solid phase in the central regions of the ingot.
Proceedings ArticleDOI
Applications for infrared imaging equipment in photovoltaic cell, module, and system testing
TL;DR: In this paper, the authors use portable infrared imaging systems (cameras) to measure both absolute and relative temperature distributions on small and large components with a high degree of temperature and spatial resolution.
Journal ArticleDOI
Observation of transition metals at shunt locations in multicrystalline silicon solar cells
Tonio Buonassisi,O. F. Vyvenko,Andrei A. Istratov,Eicke R. Weber,Giso Hahn,Detlef Sontag,J.P. Rakotoniaina,Otwin Breitenstein,Jörg Isenberg,R. Schindler +9 more
TL;DR: By employing a combination of analytical tools including lock-in thermography and synchrotron-based x-ray fluorescence microscopy, transition metals have been identified at shunting locations in two types of low-cost multicrystalline silicon (mc-Si) solar cell materials as discussed by the authors.