Non-Symmetrical (NS) Reconfiguration Techniques to Enhance Power Generation Capability of Solar PV System

Abstract

At present, primary power generation depends on non-renewable energy resources, which will become extinct. Solar is the best option in renewable energy sources to achieve clean and green power extraction. Solar PV transforms light energy into electrical energy. However, the output power of solar PV changes with solar insolation. It is also affected by environmental factors and the shading effect. One of the key factors that can reduce the PV system output power is partial shading condition (PSC). The reduction in power output not only depends on shaded region but also depends on pattern of shading and physical position of shaded modules in the array. Due to PSCs, mismatch losses are induced between the shaded modules which can cause several peaks in the output power–voltage (P-V) characteristic. This article describes the non-symmetrical reconfiguration technique and compares it with the primary total cross tied connection. The performance of non-symmetrical reconfiguration techniques is evaluated and compared in terms of global maximum power (GMP), voltage and currents at GMP, open and short circuit voltage and currents, mismatch power loss (MPL), fill factor, efficiency, and number of local maximum power peaks (LMPPs) on a 9 × 9 PV array.

Solar Array Optimization Using Cryptographic Fibonacci Transformation for Global Power Enhancement and Ease of MPPT Controllers

“…Most of the existing static reconfiguration techniques [14][15][16][17][18][19][20][21][22][23][24][27][28][29][30][31][32][33][34]36] are not compatible with asymmetric arrays as they are based on puzzle-based, magic square-based, logic-based rules that are applicable only for symmetric grids. In practice, the PV arrays can be symmetrical or asymmetrical.…”

“…The novelty and contributions of the proposed work are as follows: 1) A highly efficient, simple, scalable, sensorless, switchless integer sequence‐based PV array reconfiguration approach is proposed to effectively disperse the shade, and its effectiveness is evaluated using image quality indices. 2) As opposed to many static techniques [ 14–36 ] that indiscriminately disperse the shade, the proposed technique intelligently disperses the shade. This is achieved by the image scrambling property of the considered integer sequence strategy, where the correlation between the adjacent shaded PV modules in a row, column, and diagonal is highly reduced, thereby improving the total irradiation of a particular row of PV array.…”

Augmenting Power Efficiency by Virtue of a Novel Physical Reconfiguration of Solar Photovoltaic Array in Tandem with Experimental Validation

“…This has given rise to several PVA configurations (PVACs) such as total cross tied (TCT), honey comb, series, series parallel (SP), and bridge link. [1] The PVA experience different kinds of challenges irrespective of the approach used for the interconnection and partial shading is the most frequently met challenge. [2] The partial shading encountered by a PVA is very commonly observed and it can be due to, in accordance with ref.…”

“…This has given rise to several PVA configurations (PVACs) such as total cross tied (TCT), honey comb, series, series parallel (SP), and bridge link. [ 1 ]…”

Hydrogen Fuel for Future Mobility: Challenges and Future Aspects

“…It is estimated that the drastic increase in power demand will deplete fossil fuel for power production [4][5][6]. Moreover, the environmental impacts of fossil fuel utilization in various sectors include to the emission of greenhouse gases (GHGs) and the generation of pollutants in the environment [7][8][9]. The aforementioned causes justify the increase in demand for renewable and sustainable energy-based power stations and the dependency of various sectors on them [10][11][12].…”