Predicting Photovoltaic Module Lifespan Based on Combined Stress Tests and Latent Heat Analysis
In this study, long-term reliability tests for high-power-density photovoltaic (PV) modules were introduced and analyzed in accordance with IEC 61215 and light-combined damp heat cycles, such as DIN 75220. The results indicated that post light soaking procedure, light-combined damp heat cycles cause...
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2025-01-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/18/2/304 |
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| author | Woojun Nam Jinho Choi Gyugwang Kim Jinhee Hyun Hyungkeun Ahn Neungsoo Park |
| author_facet | Woojun Nam Jinho Choi Gyugwang Kim Jinhee Hyun Hyungkeun Ahn Neungsoo Park |
| author_sort | Woojun Nam |
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| description | In this study, long-term reliability tests for high-power-density photovoltaic (PV) modules were introduced and analyzed in accordance with IEC 61215 and light-combined damp heat cycles, such as DIN 75220. The results indicated that post light soaking procedure, light-combined damp heat cycles caused a 3.51% power drop, while IEC standard tests (DH1000 and TC200) caused only 0.87% and 1.32% power drops, respectively. IEC 61215 failed to assess the long-term reliability of the high-power-density PV module, such as the passivated emitter rear cell. Additionally, based on the combined test, the latent heat (<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mrow><mi>Q</mi></mrow><mrow><mi>m</mi><mi>o</mi><mi>d</mi></mrow></msub></mrow></semantics></math></inline-formula>) of the module was introduced to predict its degradation rate and to fit the prediction curve of the product guaranteed by the PV module manufacturers. <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mrow><mi>Q</mi></mrow><mrow><mi>m</mi><mi>o</mi><mi>d</mi></mrow></msub></mrow></semantics></math></inline-formula> facilitates in predicting a PV module’s lifespan according to the environmental factors of the actual installation area. The <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mrow><mi>Q</mi></mrow><mrow><mi>m</mi><mi>o</mi><mi>d</mi></mrow></msub></mrow></semantics></math></inline-formula> values of the PV stations in water environments, such as floating and/or marine PVs, indicated that they would last 7.2 years more than those on a rooftop, assuming that latent heat is the only cause of deterioration. Therefore, extending module life and improving power generation efficiency by determining installation sites to minimize latent heat would be advantageous. |
| format | Article |
| id | doaj-art-85428c3dd504493ab9346bf43259b067 |
| institution | Kabale University |
| issn | 1996-1073 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | MDPI AG |
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| series | Energies |
| spelling | doaj-art-85428c3dd504493ab9346bf43259b0672025-01-24T13:30:58ZengMDPI AGEnergies1996-10732025-01-0118230410.3390/en18020304Predicting Photovoltaic Module Lifespan Based on Combined Stress Tests and Latent Heat AnalysisWoojun Nam0Jinho Choi1Gyugwang Kim2Jinhee Hyun3Hyungkeun Ahn4Neungsoo Park5Next Generation Photovoltaic Module and Power System Research Center, Konkuk University, Seoul 05029, Republic of KoreaNext Generation Photovoltaic Module and Power System Research Center, Konkuk University, Seoul 05029, Republic of KoreaNext Generation Photovoltaic Module and Power System Research Center, Konkuk University, Seoul 05029, Republic of KoreaNext Generation Photovoltaic Module and Power System Research Center, Konkuk University, Seoul 05029, Republic of KoreaNext Generation Photovoltaic Module and Power System Research Center, Konkuk University, Seoul 05029, Republic of KoreaThe Department of Computer Science & Engineering, Konkuk University, Seoul 05029, Republic of KoreaIn this study, long-term reliability tests for high-power-density photovoltaic (PV) modules were introduced and analyzed in accordance with IEC 61215 and light-combined damp heat cycles, such as DIN 75220. The results indicated that post light soaking procedure, light-combined damp heat cycles caused a 3.51% power drop, while IEC standard tests (DH1000 and TC200) caused only 0.87% and 1.32% power drops, respectively. IEC 61215 failed to assess the long-term reliability of the high-power-density PV module, such as the passivated emitter rear cell. Additionally, based on the combined test, the latent heat (<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mrow><mi>Q</mi></mrow><mrow><mi>m</mi><mi>o</mi><mi>d</mi></mrow></msub></mrow></semantics></math></inline-formula>) of the module was introduced to predict its degradation rate and to fit the prediction curve of the product guaranteed by the PV module manufacturers. <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mrow><mi>Q</mi></mrow><mrow><mi>m</mi><mi>o</mi><mi>d</mi></mrow></msub></mrow></semantics></math></inline-formula> facilitates in predicting a PV module’s lifespan according to the environmental factors of the actual installation area. The <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mrow><mi>Q</mi></mrow><mrow><mi>m</mi><mi>o</mi><mi>d</mi></mrow></msub></mrow></semantics></math></inline-formula> values of the PV stations in water environments, such as floating and/or marine PVs, indicated that they would last 7.2 years more than those on a rooftop, assuming that latent heat is the only cause of deterioration. Therefore, extending module life and improving power generation efficiency by determining installation sites to minimize latent heat would be advantageous.https://www.mdpi.com/1996-1073/18/2/304degradation ratelatent heatlifespan of high-power-density modulelight-combined damp heat cycles |
| spellingShingle | Woojun Nam Jinho Choi Gyugwang Kim Jinhee Hyun Hyungkeun Ahn Neungsoo Park Predicting Photovoltaic Module Lifespan Based on Combined Stress Tests and Latent Heat Analysis Energies degradation rate latent heat lifespan of high-power-density module light-combined damp heat cycles |
| title | Predicting Photovoltaic Module Lifespan Based on Combined Stress Tests and Latent Heat Analysis |
| title_full | Predicting Photovoltaic Module Lifespan Based on Combined Stress Tests and Latent Heat Analysis |
| title_fullStr | Predicting Photovoltaic Module Lifespan Based on Combined Stress Tests and Latent Heat Analysis |
| title_full_unstemmed | Predicting Photovoltaic Module Lifespan Based on Combined Stress Tests and Latent Heat Analysis |
| title_short | Predicting Photovoltaic Module Lifespan Based on Combined Stress Tests and Latent Heat Analysis |
| title_sort | predicting photovoltaic module lifespan based on combined stress tests and latent heat analysis |
| topic | degradation rate latent heat lifespan of high-power-density module light-combined damp heat cycles |
| url | https://www.mdpi.com/1996-1073/18/2/304 |
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