Photovoltaic array reconfiguration under partial shading conditions for maximum power extraction: A state-of-the-art review and new solution method

Rezazadeh, Sevda; Moradzadeh, Arash; Pourhossein, Kazem; Akrami, Mohammadreza; Mohammadi‐Ivatloo, Behnam; Anvari‐Moghaddam, Amjad

doi:10.1016/j.enconman.2022.115468

Cited by 37 publications

(15 citation statements)

References 76 publications

(73 reference statements)

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“…In an extensive photovoltaic system, partial shading often occurs because of the vast surface area and vigorous conditions of weather. It results in a massive power failure, thus threatening the solar generating system's protection, consistency, and power management.The characteristics curve of the PV system's Power-Voltage (P-V), Current-Voltage (I-V), and Power-Current (P-C) represent several peaks due to unequal shading [24]. These curves comprise one global maxima and numerous local minima points.…”

Section: Effect Of Partial Shadingmentioning

confidence: 99%

Robust Modified Flower Pollination Algorithm for Power Quality Enhancement in an Autonomous 31-Level Cascaded H-Bridge Photovoltaic Inverter with Partial Shading Conditions

Sahu¹,

Nayak

Choudhury

2022

IJRITCC

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The effect of global warming and the scarcity of fossil fuels has created an enormous problem in today’s era. To overcome such a problem, renewable energy sources, particularly solar energy, play a crucial role in meeting the developing need for power. However, the design of the Solar Photovoltaic (PV) system is interrupted by various factors such as the effect of temperature, isolation, aging, partial shading conditions, etc. Among all the factors mentioned, partial shading results in the significant diminution of power. To address this shading effect and enhance the flexibility of the PV system in terms of better utilization and energy extraction, a 31-Level Cascaded H-Bridge Multilevel Inverter (CHB-MLI) has been implemented to the autonomous PV system comprising of Maximum Power Point Tracking (MPPT) controller, boost converter and variable loads in MATLAB/Simulink architecture. To track maximum power from PV during varying irradiance and temperature and to further improve the system performance in terms of better convergence speed, an MPPT system with a Modified Flower Pollination Algorithm (MFPA) based PID controller has been proposed in this paper. To justify the suggested approach, the is-landed PV system is led to variation in irradiance and load. A detailed comparison of the proposed MFPA technique with classical control techniques has been meticulously discussed. The results obtained indicate that the suggested MFPA tuned PID with MLI outperforms the conventional methods in better system stability, reduced harmonics, and enhanced capacity to track maximum power from the PV system. In addition to this, the Total Harmonic Distortion (THD) using Fast Fourier Transform (FFT) has been found to verify IEEE-1547 power quality constraints. The values are found to be well within limits, thus justifying its real-time applications.

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Section: Effect Of Partial Shadingmentioning

confidence: 99%

Robust Modified Flower Pollination Algorithm for Power Quality Enhancement in an Autonomous 31-Level Cascaded H-Bridge Photovoltaic Inverter with Partial Shading Conditions

Sahu¹,

Nayak

Choudhury

2022

IJRITCC

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“…This simple and straightforward approach was tested against different existing techniques by the authors and their results highlight the superiority of the proposed technique. Lo Shu technique has been further endorsed by other authors in their work 33‐35 . A detailed discussion on Lo Shu technique has been presented in the following section (Section 2.3).…”

Section: Introductionmentioning

confidence: 98%

“…Lo Shu technique has been further endorsed by other authors in their work. [33][34][35] A detailed discussion on Lo Shu technique has been presented in the following section (Section 2.3).…”

Section: Introductionmentioning

confidence: 99%

Behavior of bifacial and monofacial photovoltaic modules under partial shading scenarios

Raina

Mathur

Sinha

2022

Intl J of Energy Research

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The current industrial scenario highlights the increased attention being awarded to bifacial photovoltaics (PV) technology due to its property of flux absorption from the rear side. But akin to monofacial modules, bifacial modules are also subjected to shading scenarios due to non-uniform illumination.A case study for comparative analysis on performance of bifacial and monofacial PV system is presented for Jaipur, India, which falls in the composite zone of Indian climate. An attempt has been made to quantify the performance of bifacial PV module under various shading scenarios and compared with monofacial module under similar condition. The work is done using a threephase approach, wherein initially the performance is studied at a module level and simulations performed to generate voltage profiles of individual cells under shade. This is followed by determining optimum inter-row spacing through experiment and RADIANCE simulations in an attempt to mitigate unwanted shade due to adjacent rows in an array. Finally, a dynamic approach to reconfigure the array under shade, combining electrical and physical reconfiguration methods to mitigate shading is studied. Based on the results of the study, bifacial technology always emerges as the superior in terms of power output over conventional monofacial technology for a wide range of partial shading scenarios. Combined physical and electrical array reconfiguration for a 3 Â 3 array shows fill factor reduction can be limited to 18.9% compared to non-uniform shade reduction of over 40%.

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“…Recently, dynamic reconfiguration has emerged to be the effective solution for partially shaded PV arrays recently which is the modified version of the earlier proposed electrical array reconfiguration (EAR) [31]. The dynamic reconfiguration technique uses switching matrix circuits to disperse the shading and equalize the row currents of the TCT-connected array to reduce the module mismatch and increase the power generation [32]. Some of the recently proposed dynamic reconfigurations include the MMTES algorithm [33], two-step GA [34], fuzzy logic and recursive least squares [35], socio-inspired democratic political algorithm [36], optimal mileage [37], multi-agent negotiation [38], and many more.…”

Section: Introductionmentioning

confidence: 99%

A zero switch and sensorless reconfiguration approach for sustainable operation of roof‐top photovoltaic system during partial shading

Aljafari

Satpathy

Babu

et al. 2023

IET Renewable Power Gen

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Photovoltaic (PV) roof‐top systems in real‐time environments are highly susceptible to the commonly occurring scenario of partial shading that occurs due to unavoidable conditions such as the shadow of buildings and trees. The occurrence of partial shading creates a serious mismatch among the modules of PV arrays that results in severe unexpected power losses in PV arrays. The conventional and hybrid configurations used for loss mitigation in PV arrays are sometimes unreliable and incapable of generating higher power during partial shading. Hence, this paper focuses on the development of a simple and effective technique for the reliable operation of PV arrays and loss reduction during the occurrence of partial shading. The technique is applicable to arbitrary array sizes having no dynamic parts and requires no switches and sensors for implementation to enhance the performance and operation of the system. The performance and reliability of the technique have been investigated under MATLAB simulation and real‐time scenarios by comparing it with various configurations under shading. The investigation reveals a higher power output by the proposed technique with an average conversion efficiency of higher than 90% and power enhancement of 19.07% than other configurations.

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Photovoltaic array reconfiguration under partial shading conditions for maximum power extraction: A state-of-the-art review and new solution method

Cited by 37 publications

References 76 publications

Robust Modified Flower Pollination Algorithm for Power Quality Enhancement in an Autonomous 31-Level Cascaded H-Bridge Photovoltaic Inverter with Partial Shading Conditions

Robust Modified Flower Pollination Algorithm for Power Quality Enhancement in an Autonomous 31-Level Cascaded H-Bridge Photovoltaic Inverter with Partial Shading Conditions

Behavior of bifacial and monofacial photovoltaic modules under partial shading scenarios

A zero switch and sensorless reconfiguration approach for sustainable operation of roof‐top photovoltaic system during partial shading

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