Static and dynamic reconfiguration approaches for mitigation of partial shading influence in photovoltaic arrays

Ajmal, Aidha Muhammad; Babu, Thanikanti Sudhakar; Ramachandaramurthy, Vigna K.; Yousri, Dalia; Ekanayake, Janaka

doi:10.1016/j.seta.2020.100738

Cited by 75 publications

(35 citation statements)

References 84 publications

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“…In addition to the above discussed FLC and ANN based controllers few other modern optimization based control techniques were also implemented for effective management of HESS. As the bio-inspired algorithms have capability of handling multi objective functions effectively and provide optimal solution which is proved in various fields of applications [77], [78]. Therefore researchers introduced the combination of FLC with optimization algorithms for effective framing of rules, which are discussed as follows.…”

Section: Optimization Based Methodsmentioning

confidence: 99%

A Comprehensive Review of Hybrid Energy Storage Systems: Converter Topologies, Control Strategies and Future Prospects

et al. 2020

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The ever increasing trend of renewable energy sources (RES) into the power system has increased the uncertainty in the operation and control of power system. The vulnerability of RES towards the unforeseeable variation of meteorological conditions demands additional resources to support. In such instance, energy storage systems (ESS) are inevitable as they are one among the various resources to support RES penetration. However, ESS has limited ability to fulfil all the requirements of a certain application. So, hybridization of multiple ESS to form a composite ESS is a potential solution. While integrating these different ESS, their power sharing control plays a crucial role to exploit the complementary characteristics of each other. Therefore, this article attempts to bring the numerous control strategies proposed in the literature at one place. Various control techniques implemented for HESS are critically reviewed and the notable observations are tabulated for better insights. Furthermore, the control techniques are classified into broad categories and they are briefly discussed with their limitations. From the carried-out analysis, the challenges faced towards the implementation of HESS for standalone and grid connected microgrid systems are presented. Finally, the future directions are laid out for the researchers to carry out the research and implementation of HESS technologies. Overall, this article would serve as a thorough guide on various control techniques implemented for HESS including their features, limitations and real-time applications.

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Section: Optimization Based Methodsmentioning

confidence: 99%

A Comprehensive Review of Hybrid Energy Storage Systems: Converter Topologies, Control Strategies and Future Prospects

et al. 2020

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“…Comprehensive study is performed on conventional SP, BL, HC and TCT PV array configurations, and compared to the three possible integer number combinations of Su-Do-Ku configurations under PSCs. Improved Su-Do-Ku configuration has higher side GMPP and different performance aspects are analyzed effectively [31]. PV power plants have been widely used in power industry with advanced technological aspects such as battery system integration, energy internet and sensor network systems [32,33,34].…”

Section: Literature Reveiwmentioning

confidence: 99%

Adaptive Switch Matrix for PV Module Connections to Avoid Permanent Cross-Tied Link in PV Array System Under Non-Uniform Irradiations

et al. 2021

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In this paper, the significance of cross-tied link between the solar photovoltaic (PV) modules in an array during partial shading conditions (PSCs) is introduced. In order to conduct a detailed analysis, twenty numbers of 20W PV modules (4×5) are arranged in a series-parallel (SP) configuration. The change in the pre-arranged SP configured PV array is implemented using a cross-link matrix switch between parallels based on shadow patterns. The switch matrix based modified PV array configuration is called Adaptive-cross-tied (A-CT) configuration. An embedded system based adaptive switch matrix (ASM) controller is developed to control the cross-linking connections between the PV modules under the PSCs to improve global maximum power. In addition, a performance analysis is carried out and compared all PV modules arranged in conventional SP and A-CT configurations. Moreover, realistic shadow test cases are under consideration to characterize current-voltage (I-V) and power-voltage (P-V) characteristics. The output power of the PV array decreases as well as the P-V curves show multiple power maxima points. , such as the local maximum power point (LMPP) and the global maximum power point (GMPP). LMPP and GMPP locations, mismatch loss (ML), enhanced fill factor (FF), decreased power loss (PL) and performance ratio (PR) are indicators of performance during experimental and MATLAB/Simulink studies.

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“…However, variation in solar radiation level and conditions such as the shading of trees, buildings, dust, passing clouds, snow, and the bird droppings have affected the amount of energy generated by the PV system. 1 This phenomenon is called partial shading. The main disadvantages of partial shading are decrease in the generated energy, increase the mismatch power loss, and formation of hotspots between the shaded modules of PV array, which may damage the modules.…”

Section: Introductionmentioning

confidence: 99%

Optimal dynamic reconfiguration of large‐scale PV plant under partial shading conditions based on two reconfigurable stages

Ajmal

Ramachandaramurthy

Tomar

et al. 2021

Int Trans Electr Energ Syst

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Varying solar radiation on photovoltaic (PV) panels reduces the PV system's output and increases the mismatch losses. Several techniques have been proposed to solve the mismatch problem, for example, the reconfiguration technique of PV panels.Most of the reconfiguration techniques have been proposed for small systems because of the difficulty in applying to large systems as a large number of switches are required for such applications. In this paper, a new technique based on total-cross-tied (TCT) in two reconfigurable stages is proposed. In the first stage, the shading over the PV plant is dispersed by switching between arrays. In the second stage, the shade dispersion from the first stage is increased by optimizing between the columns. The number of switches and sensors were reduced by using genetic algorithm, thus reducing the system cost. To demonstrate the proposed new reconfiguration technique, four shaded cases were simulated and tested using MATLAB/SIMULINK. A comprehensive analysis of power-voltage (P-V) curves and row currents calculation was performed, for TCT configuration and the proposed new reconfiguration technique. Also, a comparative study on performance analysis, energy-saving, and income generation was carried out for each shading case. The comparative study of the four cases shows that the reconfiguration techniques proposed in two stages generate more power under partial shading conditions than TCT. Further research is needed to ensure the practicality of the switches needed to realize this technique.

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Static and dynamic reconfiguration approaches for mitigation of partial shading influence in photovoltaic arrays

Cited by 75 publications

References 84 publications

A Comprehensive Review of Hybrid Energy Storage Systems: Converter Topologies, Control Strategies and Future Prospects

A Comprehensive Review of Hybrid Energy Storage Systems: Converter Topologies, Control Strategies and Future Prospects

Adaptive Switch Matrix for PV Module Connections to Avoid Permanent Cross-Tied Link in PV Array System Under Non-Uniform Irradiations

Optimal dynamic reconfiguration of large‐scale PV plant under partial shading conditions based on two reconfigurable stages

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