Modelling and performance assessment of PV array topologies under partial shading conditions to mitigate the mismatching power losses

Solar Energy ◽  
2018 ◽  
Vol 160 ◽  
pp. 303-321 ◽  
Author(s):  
Suneel Raju Pendem ◽  
Suresh Mikkili
Keyword(s):  
Performance Assessment ◽  
Power Losses ◽  
Partial Shading ◽  
Pv Array ◽  
And Performance

scholarly journals Modeling and Relative Research of Solar Photovoltaic Array Topologies Under Partial Shading Conditions

2019 ◽  
Vol 8 (11) ◽  
pp. 340-346
Keyword(s):  
Fill Factor ◽  
Electrical Power ◽  
Solar Photovoltaic ◽  
Power Losses ◽  
Partial Shading ◽  
Photovoltaic Array ◽  
Pv Array ◽  
Pv Module ◽  
And Performance ◽  
Zigzag Type

The electrical power generation from solar photo voltaic arrays increases by reducing partial shading effect due to the deposition of dust in modules, shadow of nearby buildings, cloud coverage leads to mismatching power losses. This paper gives the detailed analysis of modeling, simulation and performance analysis of different 4x4 size PV array topologies under different irradiance levels and to extract output power of panels maximum by reducing the mismatching power losses. For this analysis, a comparative study of six PV array topologies are Series, Parallel, Series-Parallel, Total-Cross-Tied, Bridge Linked and Honey-Comb are considered under various shading conditions such as one module shading, one string shading, zigzag type partial shading and total PV array partially shaded cases. The performance of above six topologies are compare with mismatching power losses and fill-factor. For designing and simulation of different PV array configurations/topologies in MaTLab/Simulink, the LG Electronics LG215P1W PV module parameters are used in all PV modules.

scholarly journals Improved Power Generation From PV Array Under Partial Shading Conditions by Shade Distribution Using Magic Square View Configuration

2019 ◽  
Author(s):  
LAHCEN
Keyword(s):  
Power Generation ◽  
Local Maximum ◽  
Maximum Power ◽  
Power Losses ◽  
Partial Shading ◽  
Matlab Simulink ◽  
Magic Square ◽  
Pv Array ◽  
Output Characteristics ◽  
Global Peak

The main purpose of this paper is to model, simulate, and improve the performance of different 9 × 9 PV array configurations under different Partial Shading Conditions (PSCs) in order to extract the maximum power by defeat the mismatching power losses. Hence, PSCs reduces the performance of Photovoltaic (PV) arrays and increase the Local Maximum Power Points (LMPPs) on output characteristics P-V due to mismatching power losses between the PV panels. For this, Total-CrossTied (TCT) , and proposed Magic Square View (MSV) PV array topologies are considered for the study under Short Narrow shading patterns. PV array configurations enhancements and theirinvestigations are carried out with regard to the comparison of the Global peak of outlet power (GP).The parameters of the PV array configurations are performed in MATLAB/Simulink software.

Advanced SuDoKu Based Reconfiguration Strategies for Maximum Power Extraction from Partially Shaded Solar PV Array

2021 ◽  
pp. 1-33
Author(s):  
Shahroz Anjum ◽  
Vivekananda Mukherjee ◽  
Gitanjali Mehta
Keyword(s):  
Individual Performance ◽  
Maximum Power ◽  
Performance Ratio ◽  
Global Maximum ◽  
Solar Pv ◽  
Partial Shading ◽  
Power Extraction ◽  
Pv Array ◽  
And Performance ◽  
Shading Effects

Abstract Individual performance of photovoltaic (PV) modules is contravened by mismatch losses which results in blockage in most of the solar power generated by the PV array (PVA). Partial shading conditions (PSCs) are the main causes of these losses. Several techniques have been discussed to reduce the issues caused by PSCs. Reconfiguration techniques have been proven to be one of the most successful methods that help towards this cause. In this method, the location of PV module (PVM) in the PVA is reconfigured so that the shading effects get distributed throughout the entire array and, hence, maximizing the power output. Two novel reconfiguration patterns such as canonical SuDoKu (CS) and multi diagonal SuDoKu (MDS) for total cross tied (TCT) configuration have been put forth in this manuscript. This approach aims to rearrange the PVMs in the TCT array as per the fed in patterns without causing a change in the internal electrical connections. Further parts of the manuscript focus on the comparison of the proposed pattern's performance with other pre-existing PVA arrangements such as, TCT, SuDoKu, optimal SuDoKu (OS) and modified SuDoku (MS) by taking into account the effects of global maximum power (GMP) point, mismatch power loss, fill factor and performance ratio. The results obtained from the detailed analysis presented in this paper gives proper evidence that, in many cases, the GMP is amplified in the CS and, in all cases, GMP is amplified in the proposed MDS PVA under different shading conditions.

scholarly journals Numerical Modeling, Simulation and Evaluation of Conventional and Hybrid Photovoltaic Modules Interconnection Configurations under Partial Shading Conditions

2021 ◽  
Author(s):  
Faisal Saeed ◽  
Haider Ali Tauqeer ◽  
Hasan Erteza Gelani ◽  
Muhammad Hassan Yousuf
Keyword(s):  
Power Loss ◽  
Simulation Analysis ◽  
Maximum Power ◽  
Power Losses ◽  
Partial Shading ◽  
Power Characteristics ◽  
Pv Array ◽  
Pv Modules ◽  
In Series ◽  
Simulation And Evaluation

Partial shading on solar photovoltaic (PV) arrays is a prevalent problem in photovoltaic systems that impair the performance of PV modules and is responsible for reduced power output as compared to that in standard irradiance conditions thereby resulting in the appearance of multiple maximas on panel output power characteristics. These maxims contribute to mismatch power losses among PV modules. The mismatch losses depend on shading characteristics together with different interconnected configuration schemes of PV modules. The research presents a comparative analysis of partial shading effects on a 4 x4 PV array system connected in series(S), parallel (P), serries-parallel (SP),total-cross-tied (TCT),central-cross-tied(CCT),bridge-linked(BL),bridge-linked total cross-tied (BLTCT) ,honey-comb(HC), honey-comb total-cross-tied (HCTCT) and ladder (LD) configurations using MATLAB/Simulink. The PV module SPR-X20-250-BLK was used for modeling and simulation analysis. Each module is comprised of 72 number of PV cells and a combination of 16 PV modules was employed for the contextual analysis. Accurate mathematical modeling for the HCTCT configuration under partial shading conditions (PSCs) is provided for the first time and is verified from the simulation. The different configuration schemes were investigated under short-narrow,short-wide,long-narrow,long-wide, diagonal, entire row distribution, and entire column distribution partial shading condition patterns with mathematical implementation and simulation of passing clouds. The performance of array configurations is compared in terms of maximum power generated ), mismatch power loss (∆), relative power loss ) and the fill factor (FF). It was inferred that on average, TCT configuration yielded maximum power generation under all shading patterns among all PV modules interconnection configurations with minimum mismatch power losses followed by hybrid and conventional PV array configurations respectively.

scholarly journals Performance Analysis of Conventional, Hybrid and Optimal PV Array Configurations of Partially Shaded Modules

2019 ◽  
Vol 9 (1) ◽  
pp. 3061-3073
Keyword(s):  
Performance Analysis ◽  
Solar Pv ◽  
Partial Shading ◽  
Power Number ◽  
Matlab Simulink ◽  
Pv Array ◽  
Pv Module ◽  
And Performance

In this paper, modeling and performance analysis of conventional configurations are Series-Parallel (SP), BridgeLinked (BL), Honey-Comb (HC), Total-Cross-Tied(TCT) and proposed hybrid configurations are SP-TCT, BL-TCT, HC-TCT, BL-HC and modified BL(MBL), modified HC(MHC), proposed optimal interconnection type configurations of a 5x5 size solar PV array under ten different partial shading cases it causes shading losses and compare the best configuration with respect to array power, number of interconnections or ties required between shaded modules in the array. The proposed optimal interconnection method reduces the number of ties required between modules and these ties are based on the position of number of shaded modules in the entire solar PV array. For the performance analysis of above 11 configurations, total ten shading cases are considered and compare the result with one un-shaded case-U of an irradiance 1000 W/m2 . The PV module parameters of Vikram Solar ELDORA 270 are used for modeling of above 11 conventional and proposed PV array configurations and simulate the models in MATLAB/ Simulink software.

scholarly journals Enhance the Output Power of a Shaded Solar Photovoltaic Arrays with Shade Dispersion based TCT Configuration

2021 ◽  
Vol 7 (1) ◽  
pp. 1-23
Author(s):  
V Bala Raju ◽  
Ch Chengaiah
Keyword(s):  
Negative Impact ◽  
Solar Photovoltaic ◽  
Solar Pv ◽  
Partial Shading ◽  
Array Configuration ◽  
Pv Array ◽  
Photovoltaic Arrays ◽  
Logic Approach ◽  
And Performance ◽  
Dispersion Technique

Partial shading has a negative impact on the performance parameters of a Solar Photovoltaic (PV) array, because it shades certain panels while leaving others un-shaded. This article focuses on modeling, comparing and performance assessment of 6×6, 6×5 and 5×6 size shadowed solar PV arrays under different partial shading cases in the MATLAB/ Simulink software. For this purpose, the simulation of series-parallel (SP), Total-Cross-Tied (TCT) and proposed shade dispersion based TCT (SD-TCT) type of array configurations was carried out under few shading cases. The proposed SD-TCT was designed using the shades dispersion technique, which is based on a number logic approach. In this technique, in order to effectively remove the row-current mismatches in the TCT PV array configuration, the shaded and un-shaded modules in an array were re-arranged, so that the shading on modules expands across the whole array. The physical placement of the TCT array modules has been reordered in accordance with the proposed number logic pattern exclusive of altering the electrical links among the panels. The simulation results showed that the performance of the SD-TCT type was superior to that of conventional array configurations.

Performance Analysis of Partially Shaded Photovoltaic Array Using Magic Square View Configuration for Shade Dispersion

2020 ◽  
Vol 142 (6) ◽  
Author(s):  
Lahcen El Iysaouy ◽  
Mhammed Lahbabi ◽  
Algirdas Baskys ◽  
Abdelmajid Oumnad
Keyword(s):  
Performance Analysis ◽  
Partial Shading ◽  
Magic Square ◽  
Multiple Peaks ◽  
Photovoltaic Array ◽  
Pv Array ◽  
Bird Droppings ◽  
Pv Modules ◽  
And Performance ◽  
Power Point

Abstract The power generated by the photovoltaic (PV) array is affected by the partial shading, caused by the neighboring object shadows, dirtiness, moving clouds, bird droppings, different orientation angles of PV modules, deposition of dust in modules, and the physical location of the PV module. Therefore, the PV systems exhibit multiple peaks of generated power and do not always track the maximum power point (MPP). Thus, to overcome these problems of multiple peaks, the PV panels are reconfigured using either electrical or physical reconfiguration methods. The main aim of this paper is to investigate the performance of magic square view (MSV) configuration of PV modules under partial shading conditions (PSCs). For validation, three kinds of PSCs patterns are considered and are then compared to the Total Cross Tied (TCT) and Sudoku (SDK) configurations: long and wide, short and narrow, and long and narrow. Overall, the obtained results show that the MSV configuration allows us to increase the power generated by the PV array by 34% and 7% under the three types of shadow studied as compared to the TCT and SDK configurations, respectively. The PV array configurations parameters are performed based on matlab/simulink software. The simulation and performance analysis of PV array configurations is performed with 81 PV modules of BP Solar Poly BP 380 modules.

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