scholarly journals Modifikasi Firefly Algorithm Untuk Partial Shading pada Photovoltaic

2021 ◽  
Vol 2 (1) ◽  
pp. 22-27
Author(s):  
Budiman ◽  
Machrus Ali
Keyword(s):  
Solar Radiation ◽  
Output Power ◽  
Firefly Algorithm ◽  
Good Control ◽  
Control Device ◽  
Optimal Controller ◽  
Partial Shading ◽  
Pv Module ◽  
Simulation Results ◽  
Modified Firefly Algorithm

Shadows of buildings or trees can partially cover the PV resulting in differences in solar radiation reception. Partial shading occurs when the PV module receives different solar radiation due to shadows of buildings or trees or clouds. This condition causes the output power of the PV array to decrease. Based on the PV curve, partial shading has a direct effect, so that a decrease in voltage or current causes a decrease in the output power of the PV. Because this requires a good control device. In this study, the method was compared without control (Uncontrolled), conventional PID (PID), PID tuned by Firefly Algorithm (PID-FA), and PID tuned by Modified Firefly Algorithm (PID-MFA). From the simulation results, it is found that the best voltage is obtained from the PID-MFA controller, the best voltage obtained from the PID-MFA controller is 1.2755 pu, the best current on the PID-MFA is 4,313; 3.67; 2,551 pu, and the maximum power is 3,253 pu. Thus it can be concluded that the best controller is PID-MFA. This research can later be used as a reference and other controllers are used to obtain an optimal controller.

scholarly journals A Modified Firefly Algorithm with Rapid Response Maximum Power Point Tracking for Photovoltaic Systems under Partial Shading Conditions

Energies ◽  
2018 ◽  
Vol 11 (9) ◽  
pp. 2284 ◽  
Author(s):  
Yu-Pei Huang ◽  
Cheng-En Ye ◽  
Xiang Chen
Keyword(s):  
Firefly Algorithm ◽  
Rapid Response ◽  
Maximum Power ◽  
Search Process ◽  
Maximum Power Point ◽  
Partial Shading ◽  
Point Tracking ◽  
Power Point Tracking ◽  
Power Point ◽  
Modified Firefly Algorithm

A rapid response optimization technique for photovoltaic maximum power point tracking (MPPT) under partial shading conditions (PSCs) is proposed in this study. To improve the solar MPPT tracking speed for rapidly-changing environmental conditions and to prevent the conventional firefly algorithm (FA) from becoming trapped at the local peaks and oscillations during the search process, a novel fusion algorithm, named the modified firefly algorithm (MFA), is proposed. The MFA integrates and modifies the processes of two algorithms, namely the firefly algorithm with neighborhood attraction (NaFA) and simplified firefly algorithm (SFA). A modified attraction process for the NaFA is used in the first iteration to avoid trapping at local maximum power points (LMPPs). In addition, in order to improve the convergence speed, the attractiveness factor of the attraction process is designed to be related to the power and position difference of the fireflies. Furthermore, the number of fireflies is designed to decrease in proportion with the iterations in the modified SFA process. Results from both the simulations and evaluations verify that the proposed algorithm offers rapid response with high accuracy and efficiency when encountering PSCs. In addition, the MFA can avoid becoming trapped at LMPPs and ease the oscillations during the search process. Consequently, the proposed method could be considered to be one of the most promising substitutes for existing approaches. In addition, the proposed method is adaptable to different types of solar panels and different system formats with specifically designed parameters.

scholarly journals Power Performance Evaluation of a PV Module Using MPPT with Fuzzy Logic Control

2021 ◽  
pp. 07-12
Author(s):  
Suman Chowdhury ◽  
Dilip Kumar Das ◽  
Md. Sharafat Hossain
Keyword(s):  
Fuzzy Logic ◽  
Output Power ◽  
Fuzzy Logic Control ◽  
Fuzzy Controller ◽  
Average Power ◽  
Mathematical Structure ◽  
Power Performance ◽  
Partial Shading ◽  
Logic Control ◽  
Pv Module

This paper exhibits performance of power of photovoltaic (PV) module in the case of shading effect. A comparison is made with performance of power of PV module void of MPPT solution. From the MATLAB simulation it is found that around 9.92% more average power generation is possible if MPPT (maximum power power point) solution is taken. To take the effect of partial shading a variation of irradiance profile has been proposed since change of irradiance causes the variation of output power to a great extent. Again to observe the performance of output power with MPPT Fuzzy logic control has been introduced for making the tracking fast and accurate. Mamdani control has been chosen as a technique for fuzzy controller. On top of this, mathematical structure of PV module has been prepared in MATLAB simulink to see output preview of PV module and this module has been linked to the fuzzy logic system to trace the peak power. In the simulation process the instantaneous power, average power and percentage power development are being analyzed with figures.

Modeling of Photovoltaic Panel and Examining Effects of Temperature in Matlab/Simulink

1970 ◽  
Vol 109 (3) ◽  
pp. 35-40 ◽  
Author(s):  
S. Rustemli ◽  
F. Dincer
Keyword(s):  
Solar Radiation ◽  
Modeling And Simulation ◽  
Output Power ◽  
Special Function ◽  
Matlab Simulink ◽  
Photovoltaic Panel ◽  
Cell Technology ◽  
Simulation Results ◽  
Effects Of Temperature ◽  
Specific Modeling

This study proposes general and specific modeling and simulation for Lorentz LA30-12S photovoltaic panel. This panel has monocrystalline cell technology. The panel power parameters are examined under observing different panel temperatures. It is created a special function for this system by Matlab/Simulink programmer. Also, the different solar radiation values are taken into account. The model for the proposed range of irradiance and temperature as model inputs, with the corresponding values of voltages, currents, and power as outputs is presented. Simulation results are compared by doing power calculations. The simulation results show that a photovoltaic panel output power reduces as module temperature increases. This situation is showed with Matlab/Simulink graphics. Ill. 13, bibl. 24, tabl. 1 (in English; abstracts in English and Lithuanian).http://dx.doi.org/10.5755/j01.eee.109.3.166

scholarly journals Maximizing Power Output of a Partially Shaded Total-Cross-Tied Photovoltaic array

2017 ◽  
Vol 2 (1) ◽  
pp. 10 ◽  
Author(s):  
Neha Saurabh Shah ◽  
Hiren H Patel
Keyword(s):  
Output Power ◽  
Power Output ◽  
Control Algorithm ◽  
Partial Shading ◽  
Current Compensation ◽  
Matlab Simulink ◽  
Photovoltaic Array ◽  
Pv Array ◽  
Higher Power ◽  
Simulation Results

Non-uniform conditions on the modules of the PV array, especially, partial shading reduces the output of the PV array to a large extent. The shaded module in a string limits the current of the entire string and hence, the output power of the string.  The output power under such conditions is reported to be higher for total-cross-tied (TCT) configuration. This paper describes two different approaches, one based on current compensation (current equalization) and another based on voltage equalization, to extract higher power from the partially shaded total-cross-tied photovoltaic array. The TCT configuration is considered to minimize the number of converters, sensors, cost and complexity involved. The additional converters in the two distinct approaches evaluated here operate only when the partial shading occurs and are controlled to minimize the current and voltage miss-matches. The analysis and the control algorithm are presented. Simulation results obtained in MATLAB/Simulink are included to demonstrate the effectiveness of both methods and the relative merits and demerits of these approaches are highlighted.

scholarly journals Validation of Shadow Effects on Solar Photovoltaic Modules Based on Module Positioning

2020 ◽  
Vol 9 (3) ◽  
pp. 1017-1022
Keyword(s):  
Power Loss ◽  
Photoelectric Effect ◽  
Photovoltaic Module ◽  
Solar Photovoltaic ◽  
Partial Shading ◽  
Photovoltaic Modules ◽  
Pv Module ◽  
Simulation Results ◽  
Shading Effects ◽  
Load Conditions

Solar Energy is one of the cleanest forms of energy harnessed from the sunlight using semiconductors through photoelectric effect. This paper reviews the existing models to study the effect of partial shading conditions or varying irradiance on the solar modules. In this paper a PV module is simulated in Matlab/ Simulink using solar cell block from Simelectronics Library to study the effect of shadows on the output power under different panel positioning under different load conditions. The simulation results have been validated against the real time study and measurements. Both the simulation and experimental results confirm that the power loss due to shading effects in a solar photovoltaic module is influenced by the topology and the interconnection of the PV cells.

scholarly journals Varying percentages of full uniform shading of a PV module in a controlled environment yields linear power reduction

2016 ◽  
Vol 27 (3) ◽  
pp. 28 ◽  
Author(s):  
Arthur James Swart ◽  
Pierre E Hertzog
Keyword(s):  
Output Power ◽  
Experimental System ◽  
Linear Increase ◽  
Power Reduction ◽  
Controlled Environment ◽  
Pv System ◽  
Partial Shading ◽  
Pv Module ◽  
Beam Component ◽  
Geographical Locations

Partial shading of a PV module has received much attention over the past few years, as it results in uneven cell power generation, compromising a PV system performance. Full uniform shading of a PV module has not received as much attention. This article correlates the percentage of full uniform shading of a given PV module within a controlled environment to its output power. The percentage of full uniform shading provided by shade nets was firstly determined. These shade nets are then used to cover a specific PV module (experimental system), while an identical PV module remains totally unshaded (control system). Increasing percentages of full uniform shading negatively affected the direct beam component in a linear way. Decreasing the light intensity falling on the PV model exhibited a linear increase in the percentage of output power reduction of the PV module. This is observed in that a shade net providing 36% of full uniform shading resulted in a 56% output power reduction, while a 63% full uniform shading net yielded 82% power reduction. These results hold a strong promise to improve current simulation modules that focus on determining the output power of a given PV array under specific environmental conditions or for specialised geographical locations.

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