Hot spot analysis of photovoltaic module under partial shading conditions by using IR-imaging technology
Joint Authors
Hussein, Hashim A.
Numan, Ali H.
Dawud, Zahra S.
Source
Engineering and Technology Journal
Issue
Vol. 39, Issue 9 (30 Sep. 2021), pp.1338-1344, 7 p.
Publisher
Publication Date
2021-09-30
Country of Publication
Iraq
No. of Pages
7
Main Subjects
Topics
Abstract EN
The probable appearance of localized overheating (hot spot) represents one of the main matters for the reliability and safety of c-Si cells.
It entails both a risk for the photovoltaic module's lifetime and a decrease in its operational efficiency.
Partial shading is the most common cause of a hot spot in a PV system.
The main aim of this work is to analyze the hotspot phenomena by I-V curve as well as IR thermography and investigate the impact of partial shading on the hottest cell experimentally to find its effect on the output power.
The results show that at normal operating conditions (G=865W/m2 and Ta=39.7°C) the output power is 89.05W; the temperature difference between the hottest and cooled cell was about 6°C.
Moreover, the short circuit current and consequently, the maximum output power reduced if only one cell fully or partially shaded.
However, when the hottest cell is shaded by 25% , 50% , 75% , and 100% of the shaded area, the power losses were 37.17 % , 50.05% , 48.61% , and 52.86% respectively.
Wheals, the hottest cell temperature was 80.6, 99.1, 101.4, and 62.4°C for 25, 50, 75, and 100% of the shading area, the major temperature difference observed at 75% of the shading represents one of the main matters for the reliability and safety of c-Si cells.
It entails both a risk for the photovoltaic module's lifetime and a decrease in its operational efficiency.
Partial shading is the most common cause of a hot spot in a PV system.
The main aim of this work is to analyze the hotspot phenomena by I-V curve as well as IR thermography and investigate the impact of partial shading on the hottest cell experimentally to find its effect on the output power.
The results show that at normal operating conditions (G=865W/m2 and Ta=39.7°C) the output power is 89.05W; the temperature difference between the hottest and cooled cell was about 6°C.
Moreover, the short circuit current and consequently, the maximum output power reduced if only one cell fully or partially shaded.
However, when the hottest cell is shaded by 25% , 50% , 75% , and 100% of the shaded area, the power losses were 37.17 % , 50.05% , 48.61% , and 52.86% respectively.
Wheals, the hottest cell temperature was 80.6, 99.1, 101.4, and 62.4°C for 25, 50, 75, and 100% of the shading area, the major temperature difference observed at 75% of the shading area.
American Psychological Association (APA)
Numan, Ali H.& Hussein, Hashim A.& Dawud, Zahra S.. 2021. Hot spot analysis of photovoltaic module under partial shading conditions by using IR-imaging technology. Engineering and Technology Journal،Vol. 39, no. 9, pp.1338-1344.
https://search.emarefa.net/detail/BIM-1281511
Modern Language Association (MLA)
Numan, Ali H.…[et al.]. Hot spot analysis of photovoltaic module under partial shading conditions by using IR-imaging technology. Engineering and Technology Journal Vol. 39, no. 9 (2021), pp.1338-1344.
https://search.emarefa.net/detail/BIM-1281511
American Medical Association (AMA)
Numan, Ali H.& Hussein, Hashim A.& Dawud, Zahra S.. Hot spot analysis of photovoltaic module under partial shading conditions by using IR-imaging technology. Engineering and Technology Journal. 2021. Vol. 39, no. 9, pp.1338-1344.
https://search.emarefa.net/detail/BIM-1281511
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 1343-1344
Record ID
BIM-1281511