EL photovoltaic panel test
EL inspection, also known as electroluminescence imaging, is really helpful for finding tiny cracks, broken cells, and other issues that can make solar panels less efficient and shorten lifespan.
EL inspection, also known as electroluminescence imaging, is really helpful for finding tiny cracks, broken cells, and other issues that can make solar panels less efficient and shorten lifespan.
Electroluminescence testing is a non-invasive method used to identify microcracks on site and help in proving the root cause – necessary for warranty disputes.
Electroluminescence (EL) imaging is a photovoltaic (PV) module characterization technique, which provides high accuracy in detecting defects and faults, such as cracks, broken cells interconnection.
4 FAQs about [EL photovoltaic panel test]
Can El & visual inspections help prevent module damage?
However, the combination of EL and visual inspections can provide more detail about the origins of module damage. Clean Energy Associates (CEA) was recently engaged by an asset owner during the acquisition phase to perform due diligence by conducting visual inspections and EL testing for a 7MW solar project in the US.
Can El images prove if a module is damaged?
Unless pre-installation EL was conducted, it can be hard to prove from EL images alone if damage such as cell cracks occurred during installation or during the manufacturing or shipping processes. However, the combination of EL and visual inspections can provide more detail about the origins of module damage.
How can drones improve El testing?
GEN-1 (May 2022 @ Intersolar Munich) A significant advancement in on-site EL testing has been the development of drone-based EL imaging systems. These systems enable mass-scale imaging with higher efficiency and reduced labor, as drones can capture thousands of modules in a single night.
Can El image analysis detect microcracks?
The EL image analysis for microcracks was conducted independently of visual inspection, and when a backsheet scratch appeared in the EL image, it was later confirmed visually. The most commonly observed visual anomaly while inspecting the 20,0000 modules was backsheet scuffs, as shown in the images below.
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