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Ahmed Fathy
Zagazig University
AlgorithmEngineeringMaximum power point trackingPhotovoltaic systemControl theory
49Publications
13H-index
542Citations
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Publications 49
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Abstract The operation of the photovoltaic (PV) array under partial shadow conditions (PSCs) has negative effects on the extracted global maximum power (GMP) which is decreased due to the presence of power loss. Rearranging the shaded panels in the array is essential to enhance the GMP and diminish the effect of shadow, this process is known as PV array reconfiguration. Most of reported approaches did not guarantee the GMP and applicable to specific dimension of the PV array. Therefore, this pap...
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#1Ahmed Fathy (Zagazig University)H-Index: 13
#2Almoataz Y. Abdelaziz (Future University in Egypt)H-Index: 20
Abstract Recently, the penetration of the electric vehicles (EVs) in distribution networks gained a great attention. This paper proposes a new solution methodology incorporated recent metaheuristic approach of competition over resource (COR) for evaluating the optimal allocations and sizes of parking lots installed in radial distribution network. The main target is enhancing the network reliability with achieving minimum cost. COR is easily implemented with achieving feasible convergence for con...
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Last. Mohamed M. Hafez (Ahram Canadian University)H-Index: 2
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Obesity leads a crucial importance in metabolic disorders, as well as type 2 diabetes mellitus. Our present study was designed to assess the potential role of irisin, adiponectin, leptin and gene polymorphism of PNPLA3, leptin and adiponectin as predictive markers of diabetes associated with obesity. One hundred eighty subjects were distributed to three groups including; healthy non-diabetic non obese volunteers as a control group, diabetic non obese group, and diabetic obese group (n = 60 for e...
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#1Ahmed Fathy (Zagazig University)H-Index: 13
#2Hegazy Rezk (Minia University)H-Index: 15
: Supercapacitor (SC) is completely valuable as an energy storage device for different applications such as electric vehicles and hybrid renewable systems. A simple SC model that composed of series RC circuit is insufficient to precisely characterize its dynamic performance. Consequently, an accurate mathematical model must be created for reliable and safe operation of SC. The equivalent circuit model that contains three RC branches, immediate, delayed and long is considered, the first branch in...
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#1Ahmed Fathy (Zagazig University)H-Index: 13
#2Ahmed M. Kassem (Sohag University)H-Index: 10
Last. Almoataz Y. Abdelaziz (Ain Shams University)H-Index: 20
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This paper presents a novel optimal fuzzy proportional–integral–derivative (fuzzy PID) controller for load frequency control (LFC) designed by a proposed approach of mine blast algorithm (MBA) for multi-interconnected areas. The system includes reheat thermal connected power systems with the effect of the governor dead zone and turbine generation rate constraint nonlinearity. The proposed approach is used to determine the optimal parameters of the fuzzy PID controller to minimize the integral ti...
7 CitationsSource
#1Dalia Yousri (FU: Fayoum University)H-Index: 7
Last. Ahmed Fathy (Zagazig University)H-Index: 13
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Abstract This paper proposes a reliable approach-based Harris Hawks Optimizer (HHO) to evaluate the optimal parameters of the Proportional-Integral (PI) controller simulating load frequency control (LFC) incorporated in a multi-interconnected system with renewable energy sources (RESs). During the optimization process, the integral time absolute error (ITAE) of the frequency and tie-line power is handled as the objective function. The HHO is selected due to its ease and requirement of less contr...
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#1Ahmed Fathy (Zagazig University)H-Index: 13
#2Mohammad Ali Abdelkareem (UOS: University of Sharjah)H-Index: 20
Last. Hegazy Rezk (Minia University)H-Index: 15
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Abstract Cell temperature and water content of the membrane have a significant effect on the performance of fuel cells. The current-power curve of the fuel cell has a maximum power point (MPP) that is needed to be tracked. This study presents a novel strategy based on a salp swarm algorithm (SSA) for extracting the maximum power of proton-exchange membrane fuel cell (PEMFC). At first, a new formula is derived to estimate the optimal voltage of PEMFC corresponding to MPP. Then the error between t...
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#1Ahmed Fathy (Zagazig University)H-Index: 13
#2Mohamed Abd Elaziz (Zagazig University)H-Index: 14
Last. Abdullah G. AlharbiH-Index: 1
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Abstract Fuel cells (FCs) penetrated strongly in many applications, modeling of FCs became a major challenge in recent years due to their characteristics, there are some missing data in the datasheet. This paper presents a novel hybrid optimization approach comprising vortex search algorithm (VSA) and differential evolution (DE) for estimating the optimal unspecified parameters of the proton exchange membrane fuel cell (PEMFC). The parameters to be evaluated are seven, ξ1, ξ2, ξ3, ξ4, λ, Rc and ...
7 CitationsSource
This paper develops a recent methodology based on social spider optimizer (SSO) to determine the optimal sizing of a hybrid renewable energy sources (RESs) integrated microgrid (MG). It comprises photovoltaic (PV), wind turbine (WT), battery, diesel generator (DG), and inverter. The cost of energy (COE) is proposed as fitness function. The objective of the proposed SSO is to determine three design variables which are number of PV panels, number of WT, and number of battery autonomy days such tha...
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#1Hossam AliH-Index: 1
#2Ahmed M. KassemH-Index: 10
Last. Ahmed FathyH-Index: 13
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