Photovoltaic Modules Selection from Shading Effects on Different Materials

Lin, Guoqian; Bimenyimana, Samuel; Tseng, Ming‐Lang; Wang, Ching-Hsin; Liu, Yuwei

doi:10.3390/sym12122082

Cited by 11 publications

(7 citation statements)

References 37 publications

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“…The results from research paper show a similar output where the output power is relational to the solar irradiance and the results were carried out through MATLAB /Simulink. The rate at which the output power reduces for different photovoltaic technologies depends on the change in solar irradiation 68) .…”

Section: Simulation Resultsmentioning

confidence: 99%

MATLAB-Based Simulation Analysis of the Partial Shading at Different Locations on Series-Parallel PV Array Configuration

Kumari¹,

Singh²,

Kumar³

2022

Evergreen

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The photovoltaic (PV) have their installations in outdoor conditions where they face several unfavorable conditions and one of them is shading. One form of shading is partial shading that create mismatch among solar PV cells consequently disturbing electrical outputs and performance of a PV array output and hence power losses are created. A lot of information can be gathered just by observing the shape and magnitude of the curves obtained from I-V & P-V characteristics of the photovoltaic array. The I-V & P-V characteristics under shading also show changes in their usual shape which is analyzed in our research paper using MATLAB/Simulinkbased simulation results by examining the variation in the characteristics of a series-parallel photovoltaic array configuration under partial shading conditions. The simulated results show existence of multiple peaks and steps in the I-V & P-V characteristics. The second part of result section show a comparative study among different partial shading condition and the mismatching power loss is estimated to be 27.16%, 29%, and 42.8% for partial shading pattern cases 2, 3, and 4, respectively. This paper will help readers and researchers with a clear idea of what shading is and how it affects the output of photovoltaic systems with a change in shading.

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Section: Simulation Resultsmentioning

confidence: 99%

MATLAB-Based Simulation Analysis of the Partial Shading at Different Locations on Series-Parallel PV Array Configuration

Kumari¹,

Singh²,

Kumar³

2022

Evergreen

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“…Partial shading is a non-uniform distribution of illumination on photovoltaic modules, which is due to several reasons. Indeed, there are two types of shading [11,12] The distant shade corresponds to the disappearance of the sun behind the horizon line. Alternatively, close shading is often due to unavoidable obstacles such as power lines, trees, neighboring buildings or dirt.…”

Section: Introductionmentioning

confidence: 99%

A Comparison between Particle Swarm and Grey Wolf Optimization Algorithms for Improving the Battery Autonomy in a Photovoltaic System

et al. 2021

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This research focuses on a photovoltaic system that powers an Electric Vehicle when moving in realistic scenarios with partial shading conditions. The main goal is to find an efficient control scheme to allow the solar generator producing the maximum amount of power achievable. The first contribution of this paper is the mathematical modelling of the photovoltaic system, its function and its features, considering the synthesis of the step-up converter and the maximum power point tracking analysis. This research looks at two intelligent control strategies to get the most power out, even with shading areas. Specifically, we show how to apply two evolutionary algorithms for this control. They are the “particle swarm optimization method” and the “grey wolf optimization method”. These algorithms were tested and evaluated when a battery storage system in an Electric Vehicle is fed through a photovoltaic system. The Simulink/Matlab tool is used to execute the simulation phases and to quantify the performances of each of these control systems. Based on our simulation tests, the best method is identified.

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“…PV modules are partially shaded when the cells share non-uniform irradiance due to the passing of a cloud or surrounding buildings and trees [16]. The partial shading can lead to the reduction of the PV module's maximum power point (MPP) and cause the formation of hotspots [17][18][19][20][21]. The effect of shading is different, as the effect for monocrystalline modules is more noticeable than for thin-film PV modules [20].…”

Section: Introductionmentioning

confidence: 99%

Improving the Efficiency of Partially Shaded Photovoltaic Modules without Bypass Diodes

2021

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Photovoltaic (PV) modules comprise bypass diodes to limit hotspot formation. However, they suffer from performance reduction in the presence of partial shading. This paper proposes external circuitry to control the connection type (series/parallel) of the PV cells through a pair of on/off switches resulting in three different operation modes. Mode 1 represents the typical 36 series-connected cells, while mode 2 represents two parallel-connected strings, and mode 3 maximizes the output current where the four strings are connected in parallel. The added values of the approach are that (1) the output current of the PV module can be increased without the need for a buck-boost converter and (2) the partial shading has less impact on the output power than the adoption of bypass diodes. This work shows that simulating three monocrystalline PV modules (120 W, 200 W, and 241 W), consisting of 36, 60, and 72 series-connected cells, lose about 74% when one cell has 80% shading in the absence of bypass diodes. The application of a bypass diode for each pair of strings in the PV module improves this decrease to 61.89%, 40.66%, and 39.47%, respectively. According to our proposed approach, this power loss can be significantly decreased to 19.59%, 50%, and 50.01% for the three PV modules, respectively, representing more than a 42% improvement compared to bypass diodes.

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Photovoltaic Modules Selection from Shading Effects on Different Materials

Cited by 11 publications

References 37 publications

MATLAB-Based Simulation Analysis of the Partial Shading at Different Locations on Series-Parallel PV Array Configuration

MATLAB-Based Simulation Analysis of the Partial Shading at Different Locations on Series-Parallel PV Array Configuration

A Comparison between Particle Swarm and Grey Wolf Optimization Algorithms for Improving the Battery Autonomy in a Photovoltaic System

Improving the Efficiency of Partially Shaded Photovoltaic Modules without Bypass Diodes

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