A simple, sensorless and fixed reconfiguration scheme for maximum power enhancement in PV systems

Pillai, Dhanup S.; Ram, J. Prasanth; Nihanth, Malisetty Siva Sai; Rajasekar, N.

doi:10.1016/j.enconman.2018.07.016

Cited by 101 publications

(25 citation statements)

References 29 publications

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“…In this paper, various types of PV array configuration models are reviewed and investigated in terms of their performance parameters such as accuracy, reliability, (BL-HC) 3 [118,126,136] RTCT 2 [100,118] [91] New configuration 1 [93] Novel configuration 1 [120] SDS configuration 1 [120] Latin square (LS) 1 [129] Dominance Square (DS) 2 [130,139] OE configuration 1 [133] Skyscraper 1 [134] Ladder configuration 1 [136] Competence Square (CS) 3 [139,143,147] Lo-Shu 1 [139] Metaheuristic-TCT based PV array configurations GA 5 [142][143][144][145]147] PSO (ASM based configuration)…”

Section: B Liteature Reviewmentioning

confidence: 99%

“…During the reconfiguration, the challenge to minimize the wire length for PV module interconnections is solved by the authors in [130]. The 9×9 size of Dominance Square (DS) is reconfigured using column index method (CIM) and compared with SP and TCT configurations during SW, LW, SN, and LN shadow types in terms of GMPP location…”

Section: (L) Dominance Square Configurationmentioning

confidence: 99%

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Impact of Partial Shading on Various PV Array Configurations and Different Modeling Approaches: A Comprehensive Review

Pachauri

Mahela²,

Sharma

et al. 2020

IEEE Access

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Since the last decade, partial shading conditions (PSCs) and its adverse influences on photovoltaic (PV) system performance have received due attention. It motivates researchers to explore methods to diminish/disperse the shading effects and/or novel PV array configurations to sustain under PSCs. To diminish the effects of PSCs, this paper presents a comprehensive review of various PV array configuration models for PV systems and metaheuristic approaches for shade dispersion effectively. Different PV array modeling approaches are identified, emphasizing their benefits, inadequacies and categorized according to vital features such as shade dispersion and improved performance in terms of efficiency; fill factor (FF), and maxima power, minimized power losses (PL) primarily. Besides these various PV array configurations such as hybrid, reconfigured, mathematical/game puzzle based advanced configurations are uniquely discussed with the existing configurations. In the current scenario, the metaheuristic algorithms are explored and widely accepted by researchers due to the long wire length requirement for PV array reconfiguration. This paper discusses and deliberates recent developments in methods of solar PV performance enhancement that deserves further study. Overall, the present study is helpful for academicians and researchers in the committed solar power installation area. INDEX TERMS Photovoltaic system, partial shading condition (PSC), game puzzle, total cross-tied (TCT), honey comb, bridge link, metaheuristic algorithm.

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Section: B Liteature Reviewmentioning

confidence: 99%

Section: (L) Dominance Square Configurationmentioning

confidence: 99%

Impact of Partial Shading on Various PV Array Configurations and Different Modeling Approaches: A Comprehensive Review

Pachauri

Mahela²,

Sharma

et al. 2020

IEEE Access

View full text Add to dashboard Cite

show abstract

“…[22], the dominance square method has been employed to obtain puzzle-based reconfiguration of PV array operated under shadow conditions. A column index methodology based on physical relocation of the shaded PV modules incorporated in the array has been presented by Pillai [23] to enhance the output power. The competence square approach has been presented in Ref.…”

Section: Introductionmentioning

confidence: 99%

Multi-Objective Grey Wolf Optimizer for Optimal Design of Switching Matrix for Shaded PV array Dynamic Reconfiguration

et al. 2020

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One of the worst negative phenomena faced by photovoltaic (PV) array is the operation under the shadow phenomenon, which significantly affects the generated power. Multiple local maximum power point (MPP) and unique global MPP are generated from the shaded array. Therefore, regular dispersion of the shadow falling on the PV array surface is a vital issue to extract the GMP via reconfiguration of the shaded modules in the array. This paper proposes a recent approach based on Multi-objective grey wolf optimizer (MOGWO) to reconfigure the shaded PV array optimally. The main objective of the proposed MOGWO is providing the optimal structure for the switching matrix to minimize the row current difference and maximize the output power. The benefits of the proposed strategy is performing a dynamic reconfiguration process which closes to the reality. The proposed method is validated across 9 × 9 PV array with six shade patterns. MOGWO schemes results are compared with TCT and modified SuDoKu based on several statistical metrics. The comparison reveals the superiority of MOGWO in tackling the multi-peak issue in the P-V characteristics with harvesting the highest power levels. INDEX TERMS Multi-objective grey wolf optimizer; grey wolf optimizer; Total-cross-tied; PV reconfiguration, partial shading .

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“…Investigating acute and chronic reasons of fault is also of upmost importance for selection of detection techniques. Line to line fault, line to ground fault, open circuit fault and arc faults are categorized as acute fault because all these faults need quick detection and mitigation while remaining faults are chronic in nature; they do not occur suddenly [9]. There are certain technical challenges in fault detection and mitigation in each fault scenario.…”

Section: Introductionmentioning

confidence: 99%

Comparative Analysis of Photovoltaic Faults and Performance Evaluation of its Detection Techniques

et al. 2020

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Faults detection and analysis in PV system are considered critical for ensuring safety and increasing output power of PV arrays. PV faults do not only reduce output power and efficiency but also lessen the working life time of a system. Most common and chronic PV faults are line to line, line to ground, shadowing fault, and arc fault while less common and acute faults are hotspot, degradation, bypass diode, and connection faults. Event of PV fault detection failures, such as most recent in Mount Holly, USA in 2011 evinced the improvement in current fault detection and mitigation techniques to shrink such failures. There are various limitations in the existing fault detection techniques, as identified in this paper, which may cause misdetection of the faults. This paper is focused on mathematical formulation of various PV faults and lead to the latter's critical analysis in terms of efficiency, accuracy, complexity, and reliability. The presented work also helps to identify nature and causes of occurrence of a PV fault. This research work serves as a special set of references and recommendations for researchers and PV manufacturing industry to improve fault detection prospects in solar PV systems.

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A simple, sensorless and fixed reconfiguration scheme for maximum power enhancement in PV systems

Cited by 101 publications

References 29 publications

Impact of Partial Shading on Various PV Array Configurations and Different Modeling Approaches: A Comprehensive Review

Impact of Partial Shading on Various PV Array Configurations and Different Modeling Approaches: A Comprehensive Review

Multi-Objective Grey Wolf Optimizer for Optimal Design of Switching Matrix for Shaded PV array Dynamic Reconfiguration

Comparative Analysis of Photovoltaic Faults and Performance Evaluation of its Detection Techniques

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