Electro-thermal modelling of large PV array degradation for thermography and peak power conditioning monitoring

Adcock, Glen (2016) Electro-thermal modelling of large PV array degradation for thermography and peak power conditioning monitoring. [USQ Project]

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Abstract

Photovoltaic (PV) panels started their long technological development journey at the hands of legendary pioneers such as Edmond Bequerel. He discovered the key solar energy principles in 1839 and following this Heinrich Hertz was credited with the discovery of the photoelectric effect in 1887. Nikolas Tesla developed key patents in 1901 and Albert Einstein published a paper in 1905. This work in 1954 lead to Bell Laboratories producing the first commercial PV cell and since then PV cells have advanced to astronomical levels.

This project aimed to model the effects of degradation of photovoltaic panels. The goal was to observe the effects that PV cell failure has on the cells internal resistance, and then determine what effect this had on the performance of the panel’s output. Field trials were also undertaken to detect this heating using an infrared thermograph and to also relate the temperatures to the simulated results.

Results showed that any increase in panel temperature above 25°C caused the panel’s output to reduce up to 63% at 90°C. The physical detection of heating or hot spots was successful with six out of the thirty-six arrays having cells with increased temperatures. Additionally, the maximum cell temperature scanned was 61°C which was a 24°C increase from the nominal of the rest of the PV array.


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Item Type: USQ Project
Item Status: Live Archive
Additional Information: Bachelor of Engineering (Honours) Major Power Engineering project
Faculty / Department / School: Current - Faculty of Health, Engineering and Sciences - School of Mechanical and Electrical Engineering
Supervisors: Helwig, Andreas; Das, Narottam
Date Deposited: 19 Jul 2017 00:05
Last Modified: 19 Jul 2017 23:43
Uncontrolled Keywords: Photovoltaic, photoelectric effect, infrared thermograph
Fields of Research : 09 Engineering > 0906 Electrical and Electronic Engineering > 090608 Renewable Power and Energy Systems Engineering (excl. Solar Cells)
URI: http://eprints.usq.edu.au/id/eprint/31289

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