A field-applicable health monitoring method for photovoltaic system

Changwoon Han and Hyeonseok Lee

Reliability Engineering and System Safety, 2019, vol. 184, issue C, 219-227

Abstract: Solar cell modules are connected in series and parallel in a photovoltaic system. All the solar cell modules degrade over time and the most degraded module in a string decides the output level of the string. In this study, we suggest a health monitoring method which enables to detect the most degraded module in a string without separating the module from the string. The method places a non-transparent film on a module in a string to make an artificial shading effect and monitors the current-voltage curve of the string while placing the film to the next one. We show analytically that the most degraded module can be detected by comparing all the string current-voltage curves. We demonstrate the method on an outdoor photovoltaic string.

Keywords: Solar cell module; Prognostics and health management; Health monitoring; Module degradation (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (4)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:reensy:v:184:y:2019:i:c:p:219-227

DOI: 10.1016/j.ress.2018.01.002

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