Experimental study of PV strings affected by cracks

Cheng, T; Al-Soeidat, M; Lu, DD-C; Agelidis, VG

Experimental study of PV strings affected by cracks

Cheng, T Al-Soeidat, M

Lu, DD-C Agelidis, VG

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Publisher:: Institution of Engineering and Technology (IET)
Publication Type:: Journal Article
Citation:: The Journal of Engineering, 2019, 2019 (18), pp. 5124 - 5128
Issue Date:: 2019-07-01

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Field	Value	Language
dc.contributor.author	Cheng, T	en_US
dc.contributor.author	Al-Soeidat, M https://orcid.org/0000-0003-3134-5434	en_US
dc.contributor.author	Lu, DD-C	en_US
dc.contributor.author	Agelidis, VG	en_US
dc.date.issued	2019-07-01	en_US
dc.identifier.citation	The Journal of Engineering, 2019, 2019 (18), pp. 5124 - 5128	en_US
dc.identifier.uri	http://hdl.handle.net/10453/139233
dc.description.abstract	Crack is one critical factor that degrades the performance of photovoltaic (PV) panels. To gain a better understanding of the impacts of cracks appeared on PVs and also to mitigate it, its failure mechanism, detrimental effects, criticality, and potential risks on independent PV panels are firstly reviewed in this study. An experimental study which investigates the degree of series connected and parallel connected PV strings which are affected by cracked cells are presented. A comparison of impacts of the partially shaded PV panel string and cracked cells happened to the PV panel string is given to evaluate their criticality levels. The experimental results show that the series connected PV panel string is strongly affected once the cell is seriously cracked, as the current generation capability is clamped. Partial shading, however, shows better performance. In addition, though the overall power the parallel connected PV string is reduced, it is less affected by the cracked cells compared to the series connected one. Lastly, a bypass diode is added to a series connected PV panel string with cracked cells, and the experimental results show that it can be an effective way to minimise the negative impacts of cracks.	en_US
dc.language	en	en_US
dc.publisher	Institution of Engineering and Technology (IET)	en_US
dc.relation.ispartof	The Journal of Engineering	en_US
dc.relation.isbasedon	10.1049/joe.2018.9320	en_US
dc.rights	This paper is a postprint of a paper submitted to and accepted for publication in The Journal of Engineering and is subject to Institution of Engineering and Technology Copyright. The copy of record is available at the IET Digital Library.	en_US
dc.title	Experimental study of PV strings affected by cracks	en_US
dc.type	Journal Article
utslib.citation.volume	18	en_US
utslib.citation.volume	2019	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
utslib.copyright.status	open_access
pubs.consider-herdc	true	en_US
pubs.issue	18	en_US
pubs.publication-status	Published	en_US
pubs.volume	2019	en_US

Abstract:

Crack is one critical factor that degrades the performance of photovoltaic (PV) panels. To gain a better understanding of the impacts of cracks appeared on PVs and also to mitigate it, its failure mechanism, detrimental effects, criticality, and potential risks on independent PV panels are firstly reviewed in this study. An experimental study which investigates the degree of series connected and parallel connected PV strings which are affected by cracked cells are presented. A comparison of impacts of the partially shaded PV panel string and cracked cells happened to the PV panel string is given to evaluate their criticality levels. The experimental results show that the series connected PV panel string is strongly affected once the cell is seriously cracked, as the current generation capability is clamped. Partial shading, however, shows better performance. In addition, though the overall power the parallel connected PV string is reduced, it is less affected by the cracked cells compared to the series connected one. Lastly, a bypass diode is added to a series connected PV panel string with cracked cells, and the experimental results show that it can be an effective way to minimise the negative impacts of cracks.

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http://hdl.handle.net/10453/139233