Discoloration of Photovoltaic Module and Correlation with Electrical Parameters Degradation
Najib Hamisu Umar1, Pallavi Gupta2, Birinchi Bora3, Chandan Banerjee4

1Najib Hamisu Umar, Sharda University, Greater Noida (NCR, Delhi) , India.
2Pallavi Gupta, Sharda University, Greater Noida (NCR, Delhi), India.
3Birinchi Bora, National Institute of Solar Energy, Gurugram, India.
4Chandan Banerjee, National Institute of Solar Energy, Gurugram, India.
Manuscript received on July 20, 2019. | Revised Manuscript received on August 10, 2019. | Manuscript published on August 30, 2019. | PP: 2450-2452 | Volume-8 Issue-6, August 2019. | Retrieval Number: F8542088619/2019©BEIESP | DOI: 10.35940/ijeat.F8542.088619
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)

Abstract: In this paper, the effect of module discoloration on electrical parameters degradation was analyzed. The discoloration was initially identified through visual inspection method. The visual image shows that the module has changed color to brown, and there is no discoloration on the module metallization. Furthermore, the module discoloration was correlated with the electrical parameters degradation. The analysis shows that Isc and Pmax have degraded high. This indicates that discoloration defect has correlated well with Isc and Pmax degradation. The annual power degradation rate of module 1 and 2 are found to be 2.25/year and 1.56/year respectively.
Keywords: Photovoltaic System, Module Degradation, Discoloration, Correlation, Module Performance.