Experimental study of static and dynamic behaviours of cracked PV panels
| Autor: | Dylan Dah-Chuan Lu, Mohammad Al-Soeidat, Vassilios G. Agelidis, Tian Cheng |
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| Rok vydání: | 2019 |
| Předmět: |
Energy
Materials science integumentary system Renewable Energy Sustainability and the Environment business.industry 020209 energy Capacitive sensing 020208 electrical & electronic engineering Critical factors 02 engineering and technology Structural engineering Capacitance law.invention 0906 Electrical and Electronic Engineering Capacitor Criticality law mental disorders Solar cell 0202 electrical engineering electronic engineering information engineering C++ string handling Resistor business |
| Zdroj: | IET Renewable Power Generation. 13:3002-3008 |
| ISSN: | 1752-1424 1752-1416 |
| Popis: | © The Institution of Engineering and Technology 2019. Solar cell power performance is greatly affected by two critical factors ageing and crack. In order to mitigate their negative effects on the solar system, these cells are to be substituted by new cells, thus, replacing the panels. This study presents an active crack detection method that detects the cracked cells within a solar string by using AC parameter characterisation without a need to have a physical inspection. The mathematical module of the solar cell shows that it constitutes of series and parallel resistors in addition to a parallel capacitor and that their values change by ageing and crack. In addition to studying the effects of the crack on the solar cell, it is verified by the experiment that the solar cells behave as a capacitive circuit, and their capacitance increases when the cell gets cracked, getting higher as the crack becomes more serious. The experiment is extended to investigate the effect of series and parallel PV strings, which are affected by cracked and partially shaded cells to evaluate their criticality levels. By monitoring the AC parameter of the solar cell and the change of the capacitance, it is easy to detect the crack when it occurs. |
| Databáze: | OpenAIRE |
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