Improvements in methods for analysis of partially shaded PV modules

Chepp, Ellen David; Gasparin, Fabiano Perin; Krenzinger, Arno

doi:10.1016/j.renene.2022.10.035

Cited by 8 publications

(3 citation statements)

References 30 publications

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“…The analyses in this study were performed with the PVsyst simulation software, which is widely used in industrial and educational fields. PVsyst software is frequently used in studies on determination PV potential of various regions [26,27], in the design and performance analysis of grid-connected or standalone PV power plants [28,29], and in the analysis of shading events [30,31]. The PVsyst 7.4 [32] software produced by PVsyst SA was used in the designs and simulations made in the present study.…”

Section: A Pvsyst Simulation Softwarementioning

confidence: 99%

Investigation of Near Shading Losses in Photovoltaic Systems with PVsyst Software

Kayri

2024

Balkan Journal of Electrical and Computer Engineering

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Shading in photovoltaic systems is known to cause serious energy losses. However, predicting how much shading photovoltaic systems in living spaces will experience throughout the year and the resulting energy loss is not easy. In this study, the effects of near shading on the system efficiency of photovoltaic systems have been investigated with PVsyst software. Instead of standard shading elements, a mosque with a complex architecture was chosen to test the drawing capabilities of the software. A 20 kWp PV power plant is assumed to be installed in three different locations in the courtyard of the mosque. In Scenario-1, 2, and 3, the modules are located in the west, east, and north directions of the mosque, respectively. The annual energy production values obtained in these scenarios have been compared with the reference scenario without shading. According to the results, the annual production in the scenario without near shading was realized as 28.84 kWh. In Scenario-1, 2, and 3, the annual production was 20.43 kWh, 21.46 kWh, and 19.05 kWh, respectively. In the content of the study, sample geometries of shading for all scenarios are presented comparatively for critical dates. In addition, monthly energy production, performance ratio values, and loss diagrams have been presented comparatively.

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Section: A Pvsyst Simulation Softwarementioning

confidence: 99%

Investigation of Near Shading Losses in Photovoltaic Systems with PVsyst Software

Kayri

2024

Balkan Journal of Electrical and Computer Engineering

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“…The shading falling on the PV array surface for different reasons may cause a decrease in the power production, but may also cause hot spots on the PV cells and even damage and so shortening their service life. The effect of shading by different obstacles and conditions on PV systems has been studied by many researchers [2][3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

“…He suggested that experimental analyzes with mathematical models are applied to estimate the lost power of the photovoltaic arrays. Chepp et al [4] created a straightforward approach to assess how PV systems and modules perform when partially shaded. The proposed method's accuracy was contrasted with the approaches they selected, and I-V and performance values were examined.…”

Section: Introductionmentioning

confidence: 99%

Exergoeconomic Analysis of a Photovoltaic Array Affected by Dynamic Shading

Keskin

2023

Journal of Scientific Reports-A

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Photovoltaic (PV) panels are affected by undesirable elements that exist around them, trees, structures, clouds, etc., as well as natural dirt, and dust accumulation on the PV surfaces. Unfortunately, partial shading falling on top of the PV panels may affect badly the output of photovoltaic arrays. In this study, an exergoeconomic analysis has been performed on the impact of dynamic partial shading created by a mislocated building on a photovoltaic array. Both experimental and theoretical results of this study have been compared on ambient temperature, solar radiation intensity, and shading ratio. The observations have been carried out on clear days starting in June 2018 to Mai 2019. According to the results, the shaded PV exergy efficiency (6.87%) and exergoeconomic parameter (Rex= 0.18508 W/$) are maxima in June and minimum in February (Ex =4.76%, Rex= 0.12228 W/$). As a result of this study, it can be said that the PV array exposed to long-term shading will seriously affect the service life of the PV array.

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