Daylight Photoluminescence Imaging Based on Central Inverter Switching: Field Application and Quantitative Analysis

Rapid large scale daytime photoluminescence imaging in utility scale solar farms, whereby luminescence images of hundreds or even thousands of crystalline silicon solar panels are acquired simultaneously, was demonstrated by our group recently. Resulting photoluminescence images of large solar farm...

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Main Authors: Kunz, Oliver, Weber, Juergen W., Slade, Alexander, Chaffey, Samuel, Barson, Andrew, Knaack, Christian, Chung, Daniel, Trupke, Thorsten
Format: Conference Proceeding
Language:English
Subjects:
Imaging
Inverters
Photoluminescence
Silicon
Solar panels
Statistical analysis
Switches
Voltage
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creator Kunz, Oliver
Weber, Juergen W.
Slade, Alexander
Chaffey, Samuel
Barson, Andrew
Knaack, Christian
Chung, Daniel
Trupke, Thorsten
description Rapid large scale daytime photoluminescence imaging in utility scale solar farms, whereby luminescence images of hundreds or even thousands of crystalline silicon solar panels are acquired simultaneously, was demonstrated by our group recently. Resulting photoluminescence images of large solar farm sections contain unique quantitative information about voltage mismatch between series connected strings of modules resulting from performance variations between modules. The negative impact of such voltage mismatch is discussed, suggesting the use of blocking diodes in each module string to prevent significant balancing currents. An innovative PL based analysis method that is enabled by the presence of string blocking diodes is proposed and will be demonstrated experimentally.
doi_str_mv 10.1109/PVSC57443.2024.10748780
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source IEEE Xplore All Conference Series
subjects Imaging
Inverters
Photoluminescence
Silicon
Solar panels
Statistical analysis
Switches
Voltage
title Daylight Photoluminescence Imaging Based on Central Inverter Switching: Field Application and Quantitative Analysis
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