What is it about?

It could be shown that by choosing the right metrics, a PV module's power can be correlated to its temperature using a simple linear relationship under the condition that so-called steady state conditions are met. This can be achieved by measuring in the middle of the day when irradiation changes only slightly. The accuracy of the power prediction changes when deviating from this optimal state which was analyzed and quantified.

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Why is it important?

By using UAVs equipped with infrared cameras, PV modules can now potentially be assessed in a simple, fast and non-disruptive manner.


I hope these findings help people to assess module power in the field, facilitating O&M measures. Also I would love to hear about the practical application and results for further discussion.

Janine Denz
Hermann von Helmholtz-Gemeinschaft Deutscher Forschungszentren

Read the Original

This page is a summary of: Quantitative assessment of the power loss of silicon PV modules by IR thermography and its dependence on data‐filtering criteria, Progress in Photovoltaics Research and Applications, August 2019, Wiley, DOI: 10.1002/pip.3175.
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