Performance Enhancement of Partial Shaded Photovoltaic System With the Novel Screw Pattern Array Configuration Scheme

Abstract

The performance of the solar photovoltaic system is affected by the unpredictable phenomenon of partial shading. This causes the mismatch losses that suppress the power generation of healthy PV modules in it. The objective of the proposed work in this paper is to bring out the maximum power from each PV module in the PV array by reducing the mismatch losses. A new array configuration method is proposed in this paper, which follows the screw pattern in the row formation. Each PV row is created with distinct PV modules from the rows of the conventional array configuration. This proposed work allows the PV system to operate with minimum mismatch losses by even shade dispersion over the PV array. The proper mathematical expression with all necessary constraints was derived for the array formation of the proposed work. The output analysis is been validated in the simulation of the 9X9 PV array in MATLAB/Simulink®. The mismatch loss generation and output power enhancement are measured and compared with the various conventional array configuration methods under six kinds of partial shading patterns. The proposed array configuration is 40% more efficient than the conventional series-parallel array configuration and also performs better than the total cross-tied and sudoku puzzle pattern methods. The shade dispersion rate of the proposed array configuration has highly reduced the mismatch losses in the PV system and hence, it improves the power output.

Power enhanced solar PV array configuration based on calcudoku puzzle pattern for partial shaded PV system

“…Based on the structure of natural thing such as bridge, honey comb and based on the logics like sudoku, magic square, competence square, futoshiki puzzle and so on, new kind of array configurations were evolved. These configurations are effectively reduces the mismatch losses and improves the power generating ability of PV [ [15] , [16] , [17] , [18] , [19] , [20] , [21] , [22] , [23] , [24] ]. All of these configurations are using different logics for attaining the new configuration.…”

Performance Evaluation of Static PV Array Configurations for Mitigating Mismatch Losses

“…As a result, the idea of a PV array arrangement emerged from grouping PV modules into a PV array to meet the energy requirement. Initially, these techniques were used for the bulk generation, but they gained more significance due to their enhanced power-extracting capability [46], [47], [48], [49], [50], [51], [52], [53], [54], [55], [56], [57], [58], [59], [60], [61], [62], [63], [64], [65], [66], [67], [68], [69], [70], [71], [72], [73], [74], [75], [76], [77], [78], [79], [80], [81]. Series (Se) and Series-Parallel (Se-P) array configurations are the conventional methods used earlier in the PV system.…”

Differential Power Processing Converter With Active Clamp Structure and Integrated Planar Transformer for Power Generation Optimization of Multiple Photovoltaic Submodules

“…resulting in degraded output power. As a result, the DPP converter has power generation efficiency is considerably degraded [2], and excessive power consumption, called hot spotting, occurs due to the reverse bias of the cells in the PV system [3].…”