Impact of Partial Shading on Various PV Array Configurations and Different Modeling Approaches: A Comprehensive Review

Abstract

Since the last decade, partial shading conditions (PSCs) and its adverse influences on photovoltaic (PV) system performance have received due attention. It motivates researchers to explore methods to diminish/disperse the shading effects and/or novel PV array configurations to sustain under PSCs. To diminish the effects of PSCs, this paper presents a comprehensive review of various PV array configuration models for PV systems and metaheuristic approaches for shade dispersion effectively. Different PV array modeling approaches are identified, emphasizing their benefits, inadequacies and categorized according to vital features such as shade dispersion and improved performance in terms of efficiency; fill factor (FF), and maxima power, minimized power losses (PL) primarily. Besides these various PV array configurations such as hybrid, reconfigured, mathematical/game puzzle based advanced configurations are uniquely discussed with the existing configurations. In the current scenario, the metaheuristic algorithms are explored and widely accepted by researchers due to the long wire length requirement for PV array reconfiguration. This paper discusses and deliberates recent developments in methods of solar PV performance enhancement that deserves further study. Overall, the present study is helpful for academicians and researchers in the committed solar power installation area. INDEX TERMS Photovoltaic system, partial shading condition (PSC), game puzzle, total cross-tied (TCT), honey comb, bridge link, metaheuristic algorithm.

Investigation on Effect of Irradiance Change in Maximum Power Extraction From PV Array Interconnection Schemes During Partial Shading Conditions

“…Over the years, various interconnection schemes have been presented in the literature for generating maximum power from the PV array under PSCs. A comprehensive review on the various static, reconfigurable and metaheuristic PV interconnection schemes are presented by R. K. Pachauri et al [12]. The authors have concluded that TCT scheme has better performance over rest of the interconnection schemes.…”

“…The overall power generation from this PV module depends on temperature of PV cell and incident solar irradiance on it. Various mathematical modelling of PV cells are reported in the literature [12][13] out of which, single diode and two diode models are extensively used. In this work, a single diode model of SPV cell is used for modelling of SPV module, as it is widely accepted in PV cell modelling and analysis [14]- [16].…”

“…These conditions are described as partial shading conditions (PSC) and need to be mitigated to generate maximum power from the PV array. For extracting the maximum power under uniform and PSCs, different techniques have been presented in the literature, which include the usage of PV power optimizers (DC-DC/DC-AC converters) [8], MPP tracking (MPPT) algorithms [9]- [11] and different PV interconnection schemes [12] [13]. The PV interconnection schemes are well suited to enhance the PV array performance under all dynamic conditions as they possess low complexity and do not require any extra converters [14]- [16].…”

Short Term Load Forecasting of Distribution Feeder Using Artificial Neural Network Technique

“…The architecture of the ANN comprises of • Output layer: Usually it has one neuron, and its output ranges from 0 to 1, that is, greater than 0 and less than 1. But multiple outputs can be present [15,[21][22][23][24][25][26][27][28][29][30].…”

Impact of Uneven Shading by Neighboring Buildings and Clouds on the Conventional and Hybrid Configurations of Roof-Top PV Arrays

“…However, the study shows that the configurations have a minimal effect on the mismatch losses caused by the moving clouds [22]. Recently, reconfiguration techniques are playing a major role in combatting the effect of partial shading that adopt the principle of either changing the electrical connection or placement of PV modules to disperse the effect of shading in the entire array [23]. Some of these techniques include: shade dispersion scheme [24], magic square [25], SDP [26], SD-PAR [27], optimal Sudoku [28], fixed electrical reconfiguration [29], Lo Shu technique [30], etc.…”