scholarly journals A Robust Strategy Based on Marine Predators Algorithm for Large Scale Photovoltaic Array Reconfiguration to Mitigate the Partial Shading Effect on the Performance of PV System

IEEE Access ◽  
2020 ◽  
Vol 8 ◽  
pp. 112407-112426 ◽  
Author(s):  
Dalia Yousri ◽  
Thanikanti Sudhakar Babu ◽  
Eman Beshr ◽  
Magdy B. Eteiba ◽  
Dalia Allam
Keyword(s):  
Large Scale ◽  
Pv System ◽  
Partial Shading ◽  
Shading Effect ◽  
Photovoltaic Array ◽  
Marine Predators

scholarly journals Investigating the Impact of Shading Effect on the Characteristics of a Large-Scale Grid-Connected PV Power Plant in Northwest China

2014 ◽  
Vol 2014 ◽  
pp. 1-9 ◽  
Author(s):  
Yunlin Sun ◽  
Siming Chen ◽  
Liying Xie ◽  
Ruijiang Hong ◽  
Hui Shen
Keyword(s):  
Power Distribution ◽  
Large Scale ◽  
Northwest China ◽  
Pv System ◽  
Shading Effect ◽  
Pv Systems ◽  
Large Scale Grid ◽  
Feasible Solutions ◽  
The Impact ◽  
Scale Grid

Northwest China is an ideal region for large-scale grid-connected PV system installation due to its abundant solar radiation and vast areas. For grid-connected PV systems in this region, one of the key issues is how to reduce the shading effect as much as possible to maximize their power generation. In this paper, a shading simulation model for PV modules is established and its reliability is verified under the standard testing condition (STC) in laboratory. Based on the investigation result of a 20 MWp grid-connected PV plant in northwest China, the typical shading phenomena are classified and analyzed individually, such as power distribution buildings shading and wire poles shading, plants and birds droppings shading, and front-row PV arrays shading. A series of experiments is also conducted on-site to evaluate and compare the impacts of different typical shading forms. Finally, some feasible solutions are proposed to avoid or reduce the shading effect of PV system during operation in such region.

scholarly journals High Gain Observer-Based Control for Grid-Connected PV System Under Partial Shading Effect

2020 ◽  
Vol 13 (2) ◽  
pp. 161-172
Author(s):  
Mohcine Mokhlis ◽  
◽  
Mohammed Ferfra ◽  
Rafika Idrissi ◽  
◽  
...  
Keyword(s):  
High Gain ◽  
Pv System ◽  
Partial Shading ◽  
Shading Effect ◽  
High Gain Observer

An Improved Photovoltaic Array Configuration for Photovoltaic System in the Presence of Maximum Power Point Tracking during Partial Shading Condition

2017 ◽  
Vol 6 (2) ◽  
pp. 301 ◽  
Author(s):  
K. Burhanudin ◽  
N.A. Kamarzaman ◽  
A.A.A. Samat ◽  
A.I. Tajudin ◽  
S.S. Ramli ◽  
...  
Keyword(s):  
Photovoltaic System ◽  
Pv System ◽  
Partial Shading ◽  
Array Configuration ◽  
Photovoltaic Array ◽  
Pv Array ◽  
Point Tracking ◽  
Simulation Speed ◽  
Pv Panel ◽  
Pv Module

Power-Voltage (P-V) curve and Current-Voltage (I-V) curve determine the performance of the PV system. In this work, the arrangements of the PV module were reconstructed by adding the number of PV module in 3 strings configuration from 5 to 45. This method enhance the performance of the PV system as it able to show the characteristic of the P-V and I-V curve during partial shading and maximum irradiance despite higher number of PV panel. This study focuses on improving the PV array configuration and simulation speed of the PV panel. The simulation of small size PV array is possible, but the problem lies when the number of string and PV module used increases. New PV array configuration is flexible and easy to add string and increase the number of PV module. PV array configuration was modeled using MATLAB/SIMULINK software.

A dodging algorithm to reconfigure photovoltaic array to negate partial shading effect

2015 ◽  
Vol 24 (2) ◽  
pp. 200-210 ◽  
Author(s):  
Sridhar Ramasamy ◽  
Jeevananthan Seenithangam ◽  
Subhransu Sekhar Dash ◽  
Krishna Chaitanya
Keyword(s):  
Partial Shading ◽  
Shading Effect ◽  
Photovoltaic Array

scholarly journals PSO and ANN Based Hybrid MPPT Algorithm for Photovoltaic Array under Partial Shading Condition

2020 ◽  
Vol 8 (1) ◽  
pp. 9-24
Author(s):  
Md. Motakabbir Rahman ◽  
Md. Shahidul Islam
Keyword(s):  
Hybrid Method ◽  
Pso Algorithm ◽  
Maximum Power ◽  
Initial Particle ◽  
Pv System ◽  
Partial Shading ◽  
Photovoltaic Array ◽  
Pv Module ◽  
Pv Power Generation ◽  
Common Situation

MPPT is an electronics device that extracts maximum available power from a PV module under varying environmental conditions. But most of the conventional MPPT methods fail to track maximum power under partial shading condition (PSC). Partial shading is the most common situation in PV power generation, which is caused if part of the series-connected strings is partially shaded. This situation leads to the multiple peaks in the P-V characteristics curve of the PV system. So stochastic search method, Particle Swarm Optimization (PSO), is used instead of the conventional methods to track maximum power under PSC. But the PSO method has the limitation of slow operation. So in this paper, a fast hybrid method is presented, which combines the PSO method with the ANN method. In this hybrid method, the ANN enables the existing PSO method to track MPP quickly by providing more accurate initial particle positions of the PSO algorithm.

A Novel Combined Particle Swarm Optimization and Genetic Algorithm MPPT Control Method for Multiple Photovoltaic Arrays at Partial Shading

2012 ◽  
Vol 135 (1) ◽  
Author(s):  
Liqun Liu ◽  
Chunxia Liu
Keyword(s):  
Genetic Algorithm ◽  
Particle Swarm Optimization ◽  
Large Scale ◽  
Control Method ◽  
Particle Swarm ◽  
Pv System ◽  
Maximum Power Point ◽  
Partial Shading ◽  
Swarm Optimization ◽  
Power Point

The output characteristics of multiple photovoltaic (PV) arrays at partial shading are characterized by multiple steps and peaks. This makes that the maximum power point tracking (MPPT) of a large scale PV system becomes a difficult task. The conventional MPPT control method was unable to track the maximum power point (MPP) under random partial shading conditions, making the output efficiency of the PV system is low. To overcome this difficulty, in this paper, an improved MPPT control method with better performance based on the genetic algorithm (GA) and adaptive particle swarm optimization (APSO) algorithm is proposed to solve the random partial shading problem. The proposed genetic algorithm adaptive particle swarm optimization (GAAPSO) method conveniently can be used in the real-time MPPT control strategy for large scale PV system, and the implementation of the collect circuit is easy to gain the global peak of multiple PV arrays, thereby resulting in lower cost, higher overall efficiency. The proposed GAAPSO method has been experimentally validated by using several illustrative examples. Simulations and experimental results demonstrate that the GAAPSO method provides effective, fast, and perfect tracking.

scholarly journals Analysis Of Power Generation Photovoltaic Array 9×10 Wp Under Shading Effect

2020 ◽  
Vol 3 (1) ◽  
pp. 13-16
Author(s):  
Dwi Prima Putri Utami ◽  
Antonius Rajagukguk
Keyword(s):  
Power Generation ◽  
Output Power ◽  
Large Scale ◽  
Characteristic Curves ◽  
Shading Effect ◽  
Pv Systems ◽  
Photovoltaic Array ◽  
Pv Array ◽  
Pv Module ◽  
Current Voltage

There are several problems that can interfere with the performance of large-scale PV. One that enhances PV performance is shading on a PV module, that make interferes PV performance. This research studied about the effect of shading on the performance of large-scale PV systems through testing a 9 × 10 Wp miniature PV array and simulation using Matlab software. The use of diodes on a PV module can be done to prevent damage to the PV module due to shading. Through the power-voltage (P-V) and current-voltage (I-V) characteristic curves the effect of shading and the use of bypass and blocking diodes can be determined. Shading effect gave in a decrease in power in the PV module. From the results of this study note that the bypass diode and blocking diode output power generated by the PV module can be optimal.

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