Performance enhancement of partially shaded PV array using novel shade dispersion effect on magic-square puzzle configuration

Yadav, Anurag Singh; Pachauri, Rupendra Kumar; Chauhan, Yogesh K.; Choudhury, Sushabhan; Singh, Rajesh

doi:10.1016/j.solener.2017.01.011

Cited by 156 publications

(75 citation statements)

References 23 publications

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“…In the interest of the acquired outcomes, an examination under various courses of action is made and it is seen that the photovoltaic system with cleaning and sun tracking system demonstrates best outcomes as compared to the stationary arrangement and sun following states of solar photovoltaic system. Overall, further study is valuable for residential based independent photovoltaic systems [7].…”

Section: Introductionmentioning

confidence: 98%

Assessment of Existing Photovoltaic System with Cooling and Cleaning System: Case Study at Al-Khobar City

2019

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There is no denial that renewable energy is considered to be the most cost-competitive source of clean power in many parts of the world. Saudi Arabia’s vision 2030 aims at achieving the best by using different sources of renewable energy such as solar energy, wind energy, and others. The use of solar energy in particular for power generation will decrease the dependency on oil, and thus, decrease the greenhouse gasses. Solar panels efficiency tends to decrease with the accumulation of dust on their surface. Thus, a cleaning process requires assigning and employing labor, which increases the cost of running as well as high cost of machinery. The current study focuses on assessing and designing a simple auto self-cleaning system in order to improve the efficiency of the solar panel. The results showed that for the Al-Khobar region, Eastern Province, Kingdom of Saudi Arabia, the efficiency of the solar panels after cleaning was increased from 6% to an average of 12% at nominal temperature of 27 °C. In addition, the average power output was increased by 35% during the day time. In addition, the normal efficiency of the solar panels before cooling was between 10% to 15% at 42 °C. After cooling, the temperature of solar cells decreased to 20 °C and the efficiency increased by 7%. Moreover, the output power was increased by 31% with maximum efficiency of 32% at noon time.

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Section: Introductionmentioning

confidence: 98%

Assessment of Existing Photovoltaic System with Cooling and Cleaning System: Case Study at Al-Khobar City

2019

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“…Furthermore, non-sustainable fossil fuels constitute a finite resource, and there is an inverse relationship between stock availability (which is declining) and stock price. Consequently, there is an urgent requirement for all energy suppliers to promote energy efficiency and cost-effectiveness to ensure competitiveness in a changing world [1,2].…”

Section: Introductionmentioning

confidence: 99%

Gene Evaluation Algorithm for Reconfiguration of Medium and Large Size Photovoltaic Arrays Exhibiting Non-Uniform Aging

Alkahtani

et al. 2020

Energies

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Aging is known to exert various non-uniform effects on photovoltaic (PV) modules within a PV array that consequently can result in non-uniform operational parameters affecting the individual PV modules, leading to a variable power output of the overall PV array. This study presents an algorithm for optimising the configuration of a PV array within which different PV modules are subject to non-uniform aging processes. The PV array reconfiguration approach suggests maximising power generation across non-uniformly aged PV arrays by merely repositioning, rather than replacing, the PV modules, thereby keeping maintenance costs to a minimum. Such a reconfiguration strategy demands data input on the PV module electrical parameters so that optimal reconfiguration arrangements can be selected. The algorithm repetitively sorts the PV modules according to a hierarchical pattern to minimise the impact of module mismatch arising due to non-uniform aging of panels across the array. Computer modelling and analysis have been performed to assess the efficacy of the suggested approach for a variety of dimensions of randomly non-uniformly aged PV arrays (e.g., 5 × 5 and 7 × 20 PV arrays) using MATLAB. The results demonstrate that enhanced power output is possible from a non-uniformly aged PV array and that this can be applied to a PV array of any size.

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“…In its application, a PV array may be partially shaded due to clouds, buildings, trees, and bird litters, etc. [3][4][5]. Under partial shade conditions, current mismatch and voltage mismatch can dramatically reduce the power generation of a PV array [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Reconfiguration Method to Extract More Power from Partially Shaded Photovoltaic Arrays with Series-Parallel Topology

Liu

Wang

2019

Energies

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A photovoltaic (PV) array is composed of several panels connected in series-parallel topology in most actual applications. However, partial shading of a PV array can dramatically reduce power generation. This paper presents a new reconfiguration method to extract more power from PV arrays under partial shade conditions. The method is designed using the effective maximum power point current and voltage of a PV panel. Its advantages involve (i) the method reconfigures the PV array without measuring the irradiance profile, and (ii) the reconfiguration is executed on the level of a PV module. Based on these two aspects, the method disperses the shade uniformly within the PV array, reducing the mismatch loss significantly and increasing power generation. The performance of the proposed method is investigated for different shade patterns and results show improved performance under partial shade conditions.

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Performance enhancement of partially shaded PV array using novel shade dispersion effect on magic-square puzzle configuration

Cited by 156 publications

References 23 publications

Assessment of Existing Photovoltaic System with Cooling and Cleaning System: Case Study at Al-Khobar City

Assessment of Existing Photovoltaic System with Cooling and Cleaning System: Case Study at Al-Khobar City

Gene Evaluation Algorithm for Reconfiguration of Medium and Large Size Photovoltaic Arrays Exhibiting Non-Uniform Aging

Reconfiguration Method to Extract More Power from Partially Shaded Photovoltaic Arrays with Series-Parallel Topology

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