Investigation of Different BPD Placement Topologies for Shaded Modules in a Series-Parallel Configured PV Array

Bhadoria, Vikas Singh; Pachauri, Rupendra Kumar; Tiwari, Shubham; Jaiswal, Shiva Pujan; Alhelou, Hassan Haes

doi:10.1109/access.2020.3041715

Cited by 33 publications

(7 citation statements)

References 32 publications

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“…A detailed experimental study has been conducted using the proposed ken-ken puzzle-based reconfiguration technique of 4x4 PV array as shown in Fig. 18 Overall, comparative analysis of the reconfiguration methods are reported in Table 5. From the Table 5, it is observed that the KK configuration has reduced the shading loss by dispersing the occurrence of the shade uniformly throughout the array and improves the power generation with reduced complexity.…”

Section: Resultsmentioning

confidence: 99%

“…(iii) The adaptive reconfiguration technique consists of a fixed bank and an adaptive bank. The modules in the fixed bank are connected in TCT configuration and remain static, whereas the adaptive bank is reconfigurable by employing a switching matrix to obtain uniform row current [16][17][18]. The dynamic configuration requires algorithms, switching matrix, and sensors that increase the complexity in the case of a largescale PV system and economically not feasible for the small-scale PV system.…”

Section: Introductionmentioning

confidence: 99%

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A New Ken-Ken Puzzle Pattern Based Reconfiguration Technique for Maximum Power Extraction in Partial Shaded Solar PV Array

Murugesan¹,

Winston²,

Kumar³

et al. 2021

IEEE Access

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Solar Photovoltaic array may often be subjected to partial shading, which may lead to uneven row current and creates local maximum power point on the power-voltage characteristics. One of the effective approaches to dilute the concentration of partial shading is the array reconfiguration technique. This study proposes a ken-ken puzzle-based reconfiguration technique for 4x4 total-cross-tied configuration to rearrange the position of modules within the array and to improve the maximum power under partial shading conditions. Further, the performance of the ken-ken puzzle arrangement is compared with the total-cross-tied configuration and existing reconfiguration techniques namely odd-even, Latin Square, and Sudoku reported in the literature. The performance of all these configurations is evaluated in terms of fill factor, mismatch loss, power loss, execution ratio, and performance enhancement ratio. The proposed ken-ken puzzle-based reconfiguration technique mitigates the occurrence of local maximum power point and eliminates the need for a complex algorithm to track the global maximum power point. The simulation result shows that the KK puzzle-based reconfiguration technique has obtained an improved PE of 10.85 % compared to TCT configuration, followed by LS, Sudoku, and OE. Also, the experimental result shows the effectiveness of the ken-ken in diluting the effects of partial shading when the rows of the photovoltaic array are shaded. The ken-ken puzzle-based reconfiguration technique reduces the complexity, maintenance and increases reliability, scalability of the PV array.INDEX TERMSShade dispersion, ken-ken puzzle pattern, global maximum power point, local maximum power point, and performance enhancement ratio.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A New Ken-Ken Puzzle Pattern Based Reconfiguration Technique for Maximum Power Extraction in Partial Shaded Solar PV Array

Murugesan¹,

Winston²,

Kumar³

et al. 2021

IEEE Access

Self Cite

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“…The connection of PV is also essential. Series and parallel connections depend on the design of such applications [55]. Using a bypass diode is very important to protect the PV panel and reduce the shading effect to improve the overall efficiency [56].…”

Section: B Significant Of Maximum Power Point Trackingmentioning

confidence: 99%

Local-Stability Analysis of Cascaded Control for a Switching Power Converter

Afkar,

Gavagsaz-Ghoachani,

Phattanasak

et al. 2024

Journal of Robotics and Control

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Switching power converters are integral in various applications like transportation and renewable energy. After their design, ensuring stable closed-loop poles is critical to maintain safe operating conditions. This study focuses on a switching DC-DC boost converter with a cascade control approach using an energy controller for the outer loop and indirect-sliding mode control for the inner loop. The research objective involves investigating stability through eigenvalue evaluation at different operating points. A large-signal average model is applied to make controlled performance independent of the operating point by fixing system poles. Nonlinear controllers, specifically indirect-sliding mode control, are chosen for their robustness, constant switching frequency, and implementation ease. Results indicate that insufficient decoupling leads to eigenvalue displacement, impacting control parameter choices. The research contribution is investigating the local stability of cascaded control, considering its advantageous implications for both performance and design. This study contributes to the understanding of switching power converters' stability, emphasizing the proposed methodology's broader applicability to diverse converter structures. The proposed approach, applicable to various switching power converters, sheds light on the importance of proper decoupling between outer and inner loop dynamics.

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“…This section presents a comprehensive explanation for the conventional PV system and problems thereof. The series-parallel PV array configuration is the most commonly used PV array structure due to its economical, practical and user-friendly features [17]- [19]. As an example, the conventional PV system is provided in Fig.…”

Section: Theoretical Analysis Of a Pv Array System A Conventional Pv ...mentioning

confidence: 99%

Proposal for an Active PV Array to Improve System Efficiency During Partial Shading

Itako

Kudoh

et al. 2021

IEEE Access

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Owing to time-varying external environmental influences, undesirable string mismatches frequently occur in photovoltaic (PV) power generation systems, which will cause conventional PV systems to experience extremely severe power losses. Under partial shading conditions (PSCs) caused by passing clouds, neighboring buildings, and animal excrement, the characteristic curve of the PV string becomes complicated with multiple peaks, which increases the difficulty of determining the maximum power point (MPP) of the array. However, it is essential to ascertain the global maximum power point (GMPP) to extract the full power of each PV module. Therefore, we propose a new type of PV generation module constituting an active PV array (APV) system as well as its control strategy. It can ensure that the system continuously operates in the optimal state when the solar irradiation intensity drops drastically due to unanticipated environmental variables. Depending on the experiment of two PV arrays under identical conditions, the efficiency and reliability of the APV system are substantiated. Meanwhile, in the case where the external environmental conditions are deliberately changed, the experimental results fully illustrate the adaptability of the APV system to diverse harsh conditions.INDEX TERMS Active PV array, global maximum power point tracking, PV string, partial shading conditions, real-time scanning method.

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Investigation of Different BPD Placement Topologies for Shaded Modules in a Series-Parallel Configured PV Array

Cited by 33 publications

References 32 publications

A New Ken-Ken Puzzle Pattern Based Reconfiguration Technique for Maximum Power Extraction in Partial Shaded Solar PV Array

A New Ken-Ken Puzzle Pattern Based Reconfiguration Technique for Maximum Power Extraction in Partial Shaded Solar PV Array

Local-Stability Analysis of Cascaded Control for a Switching Power Converter

Proposal for an Active PV Array to Improve System Efficiency During Partial Shading

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