Modeling and simulation of photovoltaic array with different interconnection configurations under partial shading conditions for fill factor evaluation

Abstract

Partial shading of a photovoltaic array is the condition under which different modules in the array experience different irradiance levels due to shading. This difference causes mismatch between the modules, leading to undesirable effects such as reduction in generating power and hot spots. The severity of these effects can be reduced by changing module interconnections of a solar array, three different interconnections configurations, series-parallel (SP), bridge-linked (BL) and total-cross-tied (TCT) of photovoltaic generator are studied using simulation models to compare their performances, also studied their characteristic parameter variation in the function of shading, with a special attention to:Open circuit voltage (Voc), Short circuit (lsc), Maximum power (Pmp) and fill factor (FF) evaluation, in order to find which configuration is less influential to partial shading effect.

Investigation of Different BPD Placement Topologies for Shaded Modules in a Series-Parallel Configured PV Array

“…In addition, the efficiency of the N-OBPD-based TCT array is 10% higher than the N-OBPD based SP array [12]. According to [13], the TCT configuration is more capable of reducing mismatch losses than other conventional configurations. The N-OBPD type TCT array MPPs may also vary due to varying environmental conditions, but the fact remains that their performance is higher than other configurations as reported in [14].…”

Safety Analysis of Solar Module under Partial Shading

“…Fertig et al investigated the impact of reverse breakdown of solar cells on the hot spot, simulated the distribution of the temperature of the shaded cell, and validated it with experimental data [10][11][12]. Alsayid et al analyzed the effect of partial shading on the PV system but the results only contained inhomogeneous illumination and neglected incomplete shading [13][14][15].…”