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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Proceedings ArticleDOI
Avoiding the Hot Spot Occurrence in PV Modules
TL;DR: In this paper, the authors proposed a bypass circuit for partially shaded PV modules, which provides bypass action of sub-panel in case of significant reduction of the operating voltage, and zero the current in the bypassed cell by means of automatic disconnection section, thus avoiding power dissipation and the resulting hot spot.
Temperature Estimation of Partially Shaded Photovoltaic Modules Using a Multiphysics Model
TL;DR: In this paper , a multiphysics model consisting of an electrical model, an optical model, and a thermal model is developed to estimate the temperature distribution of PV module with a partially shaded cell.
Journal ArticleDOI
Synergistic experimental investigation of the nano-ceramic cover sheet on the PV module performance
TL;DR: In this article , an experimental comparison between a controlled active water-cooling system and nano-ceramic cover sheet system is performed to get the best performance in high load in photovoltaic module.
Journal ArticleDOI
Temperature Estimation of Partially Shaded Photovoltaic Modules Using a Multiphysics Model
TL;DR: In this article , a multiphysics model consisting of an electrical model, an optical model, and a thermal model is developed to estimate the temperature distribution of photovoltaic (PV) modules.
Proceedings ArticleDOI
Power Enhancement and Hotspot Reduction of a Rooftop Solar PV Array Using MOSFETs
TL;DR: In this article , the effect of partial shading on the performance of a 7x2 array size solar panel has been analyzed using a MATLAB/Simulink model, and different partial shading patterns like horizontal shape, L-shape patterns, and diagonal shape patterns are considered.
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.