Mismatch Loss Analysis of PV Array Configurations Under Partial Shading Conditions

Veerasamy, Balaji; Takeshita, Toru; Jote, Aberra; Mekonnen, Tefera

doi:10.1109/icrera.2018.8566949

Cited by 17 publications

(9 citation statements)

References 12 publications

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“…However, the irradiance magnitude is randomly considered in the PSCs analysis. B. Veerasamy et al [26] have presented a mismatching power loss analysis of S, SP, TCT, BL and HC configurations with fixed irradiance levels at PSCs. G. S. Krishna et al [27] have presented an electrical reconfiguration strategy for mitigating the PSCs wherein switches are used to disperse the shaded PV modules such that multiple peak points are mitigated.…”

Section: B Literature Reviewmentioning

confidence: 99%

Investigation on Effect of Irradiance Change in Maximum Power Extraction From PV Array Interconnection Schemes During Partial Shading Conditions

2021

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This paper presents the effect of irradiance change in solar photovoltaic (PV) array interconnection schemes under partial shading conditions (PSCs) for optimal selection of PV interconnection schemes in order to extract maximum power (MP) from the PV array. A 4×4 PV array is considered to examine the well-known PV interconnection schemes under different shading scenarios at distinct irradiance conditions. Simulation studies and experimental verification are carried out by considering a 30 W PV panel to analyse the performance of the PV array under various dynamic conditions. Comprehensive analysis in terms of fill factor, output power and mismatching power loss is presented by considering different interconnection schemes under various shading scenarios and irradiance levels. From the simulation studies and experimental verification, it is observed that the irradiance magnitude has a significant impact on the PV power generation from array interconnection schemes under PSCs wherein the performance characteristics of the array interconnection schemes vary with the variation in irradiance levels. It is also identified that the irradiance factor needs to be considered as a design variable while selecting the optimal PV array interconnection schemes for maximum power extraction under PSCs.

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Section: B Literature Reviewmentioning

confidence: 99%

Investigation on Effect of Irradiance Change in Maximum Power Extraction From PV Array Interconnection Schemes During Partial Shading Conditions

2021

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“…An anti-parallel bypass diode connected to each PV module in both the conventional and hybrid array topologies. The positions of PV modules in each row and column of all the topologies are numbered as (11, 12, ..., 16), (21, 22, ..., 26), (31, 32, ..., 36), (41, 42, ..., 46), (51, 52, ..., 56) and (61, 62, ..., 66), respectively, [2][3][4][5]. The output voltage of all PV modules numbered from 11, 12, 13, ..., 65 to 66 is represented by V 11 , V 12 , V 13 , ..., V 65 and V 66 ; whereas the currents are represented by I 11 , I 12 , I 13 , ..., I 65 and I 66 , respectively.…”

Section: Conventional and Proposed Optimal Hybrid Pv Array Topologiesmentioning

confidence: 99%

“…The PV modules are connected in various possible topologies to form an array [1]. The conventional PV array topologies are simple-series (S-S), parallel (P), series-parallel (S-P), total-cross-tied (T-C-T), bridge-linked (B-L), and honey-comb (H-C) [2][3][4][5]. The power output from conventional PV array topologies is significantly reduced and produces mismatched power loss under partial shading conditions.…”

Section: Introductionmentioning

confidence: 99%

Optimal Hybrid PV Array Topologies to Maximize the Power Output by Reducing the Effect of Non-Uniform Operating Conditions

Pendem¹,

Mikkili

Rangarajan

et al. 2021

Electronics

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The photovoltaic (PV) system center inverter architecture comprises various conventional array topologies such as simple-series (S-S), parallel (P), series-parallel (S-P), total-cross-tied (T-C-T), bridge-linked (B-L), and honey-comb (H-C). The conventional PV array topologies under non-uniform operating conditions (NUOCs) produce a higher amount of mismatching power loss and represent multiple maximum-power-points (M-P-Ps) in the output characteristics. The performance of T-C-T topology is found superior among the conventional topologies under NUOCs. However, T-C-T topology’s main limitations are higher redundancy, more number of electrical connections, higher cabling loss, poor performance during row-wise shading patterns, and more number of switches and sensors for the re-configuration of PV modules. This paper proposes the various optimal hybrid PV array topologies to overcome the limitations of conventional T-C-T array topology. The proposed hybrid topologies are such as series-parallel-cross-tied (S-P-C-T), bridge-link-cross-tied (B-L-C-T), honey-comb-cross-tied (H-C-C-T), series-parallel-total-cross-tied (S-P-T-C-T), bridge-link-total-cross-tied (B-L-T-C-T), honey-comb-total-cross-tied (H-C-T-C-T), and bridge-link-honey-comb (B-L-H-C). The proposed hybrid topologies performance is evaluated and compared with the conventional topologies under various NUOCs. The parameters used for the comparative study are open-circuit voltage, short-circuit current, global-maximum-power-point (GMPP), local-maximum-power-point (LMPP), number of LMPPs, and fill factor (FF). Furthermore, the mismatched power loss and the conversion efficiency of conventional and hybrid array topologies are also determined. Based on the results, it is found that the hybrid array topologies maximize the power output by mitigating the effect of NUOCs and reducing the number of LMPPs.

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“…It is concluded that reconfiguration method performs well with respect to other configurations under all faulty situations. The authors presents a comparison of different topologies in terms of higher power output, global and local peaks, Fill Factor (FF) and Mismatch Losses [12][13]. A new method-Futoshiki topology is introduced, whose execution is following up concerning with TCT.…”

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confidence: 99%

Performance Enhancement of PV System Configurations Under Partial Shading Conditions Using MS Method

et al. 2021

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The study of this work is to highlight the key metrics of various topologies in terms of output power, Fill Factor (FF), Mismatch Losses (ML) and efficiency. The idea behind this work is to analyze and obtain the performance of different topologies under various shading patterns. The major problem which comes across the path of Photovoltaic (PV) system performance is partial shading. The solution to this problem is to reconfigure the panels to achieve better results under shading conditions. For this, different configurations such as Series Parallel (SP), Total Cross Tied (TCT), Physical Relocation of Module with Fixed Electrical Connections (PRM-FEC), SuDoKu and Magic Square (MS) has been discussed, analyzed and compared using MATLAB/SIMULINK. Simulation approach is used to describe the working and evaluation of all configurations. By the results obtained, it is clearly visible that MS method have achieved largest output power of 2877 W, highest efficieny of 10.24 %, FF is 0.481 and lowest ML of 772 W among all the configurations under Long Narrow (LnN) pattern.

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Mismatch Loss Analysis of PV Array Configurations Under Partial Shading Conditions

Cited by 17 publications

References 12 publications

Investigation on Effect of Irradiance Change in Maximum Power Extraction From PV Array Interconnection Schemes During Partial Shading Conditions

Investigation on Effect of Irradiance Change in Maximum Power Extraction From PV Array Interconnection Schemes During Partial Shading Conditions

Optimal Hybrid PV Array Topologies to Maximize the Power Output by Reducing the Effect of Non-Uniform Operating Conditions

Performance Enhancement of PV System Configurations Under Partial Shading Conditions Using MS Method

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