Novel hot spot mitigation technique to enhance photovoltaic solar panels output power performance

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Abstract

Hot spotting is a reliability problem in photovoltaic (PV) panels where a mismatched cell heats up significantly and degrades PV panel output power performance. High PV cell temperature due to hot spotting can damage the cell encapsulate and lead to second breakdown, where both cause permanent damage to the PV panel. Therefore, the design and development of a hot spot mitigation technique is proposed using a simple, low-cost and reliable hot spot activation technique. The hot spots in the examined PV system is detected using FLIR i5 thermal imaging camera. Several experiments have been studied during various environmental conditions, where the PV module P-V curve was evaluated in each observed test to analyze the output power performance before and after the activation of the proposed hot spot mitigation technique. One PV module affected by hot spot was tested. The output power increased by approximate to 3.6 W after the activation of the hot spot mitigation technique. Additional test has been carried out while connecting the hot spot PV module in series with two other PV panels. The results indicate that there is an increase of 3.57 W in the output power after activating the hot spot mitigation technique.

LanguageEnglish
Pages72-79
Number of pages8
JournalSolar Energy Materials and Solar Cells
Volume179
Early online date16 Feb 2018
DOIs
Publication statusPublished - 1 Jun 2018

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Chemical activation
Photovoltaic cells
Infrared imaging
Cameras
Costs
Experiments
Temperature
Hot Temperature

Cite this

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title = "Novel hot spot mitigation technique to enhance photovoltaic solar panels output power performance",
abstract = "Hot spotting is a reliability problem in photovoltaic (PV) panels where a mismatched cell heats up significantly and degrades PV panel output power performance. High PV cell temperature due to hot spotting can damage the cell encapsulate and lead to second breakdown, where both cause permanent damage to the PV panel. Therefore, the design and development of a hot spot mitigation technique is proposed using a simple, low-cost and reliable hot spot activation technique. The hot spots in the examined PV system is detected using FLIR i5 thermal imaging camera. Several experiments have been studied during various environmental conditions, where the PV module P-V curve was evaluated in each observed test to analyze the output power performance before and after the activation of the proposed hot spot mitigation technique. One PV module affected by hot spot was tested. The output power increased by approximate to 3.6 W after the activation of the hot spot mitigation technique. Additional test has been carried out while connecting the hot spot PV module in series with two other PV panels. The results indicate that there is an increase of 3.57 W in the output power after activating the hot spot mitigation technique.",
keywords = "Hot spot protection, Photovoltaic (PV) hot spotting analysis, Solar cells, Thermal imaging",
author = "Mahmoud Dhimish and Violeta Holmes and Peter Mather and Martin Sibley",
year = "2018",
month = "6",
day = "1",
doi = "10.1016/j.solmat.2018.02.019",
language = "English",
volume = "179",
pages = "72--79",
journal = "Solar Energy Materials and Solar Cells",
issn = "0927-0248",
publisher = "Elsevier",

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TY - JOUR

T1 - Novel hot spot mitigation technique to enhance photovoltaic solar panels output power performance

AU - Dhimish,Mahmoud

AU - Holmes,Violeta

AU - Mather,Peter

AU - Sibley,Martin

PY - 2018/6/1

Y1 - 2018/6/1

N2 - Hot spotting is a reliability problem in photovoltaic (PV) panels where a mismatched cell heats up significantly and degrades PV panel output power performance. High PV cell temperature due to hot spotting can damage the cell encapsulate and lead to second breakdown, where both cause permanent damage to the PV panel. Therefore, the design and development of a hot spot mitigation technique is proposed using a simple, low-cost and reliable hot spot activation technique. The hot spots in the examined PV system is detected using FLIR i5 thermal imaging camera. Several experiments have been studied during various environmental conditions, where the PV module P-V curve was evaluated in each observed test to analyze the output power performance before and after the activation of the proposed hot spot mitigation technique. One PV module affected by hot spot was tested. The output power increased by approximate to 3.6 W after the activation of the hot spot mitigation technique. Additional test has been carried out while connecting the hot spot PV module in series with two other PV panels. The results indicate that there is an increase of 3.57 W in the output power after activating the hot spot mitigation technique.

AB - Hot spotting is a reliability problem in photovoltaic (PV) panels where a mismatched cell heats up significantly and degrades PV panel output power performance. High PV cell temperature due to hot spotting can damage the cell encapsulate and lead to second breakdown, where both cause permanent damage to the PV panel. Therefore, the design and development of a hot spot mitigation technique is proposed using a simple, low-cost and reliable hot spot activation technique. The hot spots in the examined PV system is detected using FLIR i5 thermal imaging camera. Several experiments have been studied during various environmental conditions, where the PV module P-V curve was evaluated in each observed test to analyze the output power performance before and after the activation of the proposed hot spot mitigation technique. One PV module affected by hot spot was tested. The output power increased by approximate to 3.6 W after the activation of the hot spot mitigation technique. Additional test has been carried out while connecting the hot spot PV module in series with two other PV panels. The results indicate that there is an increase of 3.57 W in the output power after activating the hot spot mitigation technique.

KW - Hot spot protection

KW - Photovoltaic (PV) hot spotting analysis

KW - Solar cells

KW - Thermal imaging

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DO - 10.1016/j.solmat.2018.02.019

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JO - Solar Energy Materials and Solar Cells

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