Degradation Evaluation Method with a Test Device for Aging Diagnosis in PV Modules

Jian Shen, Byeong-Gill Han, Ji-Myung Kim, Sung-Moon Choi, Kyung-Hwa Kim, Hu-Dong Lee, Dong-Hyun Tae and Dae-Seok Rho
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Jian Shen: Department of Electrical Engineering, Korea University of Technology & Education, Cheonan 31253, Korea
Byeong-Gill Han: Department of Electrical Engineering, Korea University of Technology & Education, Cheonan 31253, Korea
Ji-Myung Kim: Department of Electrical Engineering, Korea University of Technology & Education, Cheonan 31253, Korea
Sung-Moon Choi: Department of Electrical Engineering, Korea University of Technology & Education, Cheonan 31253, Korea
Kyung-Hwa Kim: Department of Electrical Engineering, Korea University of Technology & Education, Cheonan 31253, Korea
Hu-Dong Lee: Department of Electrical Engineering, Korea University of Technology & Education, Cheonan 31253, Korea
Dong-Hyun Tae: Department of Electrical Engineering, Korea University of Technology & Education, Cheonan 31253, Korea
Dae-Seok Rho: Department of Electrical Engineering, Korea University of Technology & Education, Cheonan 31253, Korea

Energies, 2022, vol. 15, issue 11, 1-13

Abstract: Generally, PV (photovoltaic) modules are known as devices which are used semi-permanently for more than 20 years, but the electrical performance and lifespan of PV modules can be significantly degraded due to various environmental factors. Thus, a proper evaluation method for aging phenomenon of PV modules is required. Although there already are methods which compare adjusted PV output power based on STC (standard test condition) with initial PV module specification, or perform direct comparison by conducting the test under STC, there are issues with objectivity or efficiency in the existing evaluation method of aging phenomenon due to the data distortion while adjusting measured data or difficulties in implementation. Therefore, in order to overcome the above-mentioned disadvantage of the existing evaluation method for deterioration in PV modules and evaluate the aging characteristics of PV modules based on on-site measurement data in an accurate and efficient manner, this paper implements a test device for aging diagnosis to measure and collect actual data from a PV module section, and presents a modeling of data analysis for aging phenomenon with MATLAB S/W in order to minimize the variability of PV output, communication error, delay, etc. Furthermore, this paper confirms the usefulness of the presented test device for aging diagnosis of the PV modules which is accurately evaluated by considering on-site measurement of PV output power by season.

Keywords: PV module; aging characteristics; aging factors; output characteristics; degradation evaluation; test device (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
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