Raafat Shalaby

Prof. Dr. Raafat Shalaby


Research Focus & Metrics

Academic Career Length

19Years (2008-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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1 January 2019 in Complexity
Verified
Journal Article
Open access
PDF file
HAHossam Hassan Ammar
Hossam Hassan Ammar
ASA. S.
A. S.
RSRaafat Shalaby
Raafat Shalaby
MMM. I. Mahmoud
M. I. Mahmoud
This paper seeks to improve the photovoltaic (PV) system efficiency using metaheuristic, optimized fractional order incremental conductance (FO‐INC) control. The proposed FO‐INC controls the output voltage of the PV arrays to obtain maximum power point tracking (MPPT). Due to its simplicity and efficiency, the incremental conductance MPPT (INC‐MPPT) is one of the most popular algorithms used in the PV scheme. However, owing to the nonlinearity and fractional order (FO) nature of both PV and DC‐DC converters, the conventional INC algorithm provides a trade‐off between monitoring velocity and tracking precision. Fractional calculus is used to provide an enhanced dynamical model of the PV system to describe nonlinear characteristics. Moreover, three metaheuristic optimization techniques are applied; Particle Swarm Optimization (PSO), Ant Colony Optimization (ACO), and AntLion Optimizer (ALO) are used for tuning the FO parameters of the proposed INC‐MPPT. A MATLAB‐Simulink‐based model of the PV and optimization have been developed and simulated for different INC‐MPPT techniques. Different techniques aim to control the boost DC‐DC converter towards the MPP. The proposed optimization algorithms are, also, developed and implemented in MATLAB to tune the target parameters. Four performance indices are also introduced in this research to show the reliability of the comparative analysis of the proposed FO‐INC with metaheuristic optimization and the conventional INC‐MPPT algorithms when applied to a dynamical PV system under rapidly changing weather conditions. The simulation results show the effective performance of the proposed metaheuristic optimized FO‐INC as a MPPT control for different climatic conditions with disturbance rejection and robustness analysis.

30 July 2024 in The International Journal of Advanced Manufacturing Technology
Verified
Journal Article
Open access
PDF file
KEKareim Ellithy
Kareim Ellithy
MSMariam Salah
Mariam Salah
Irene FahimIrene Fahim
Irene Fahim
RSRaafat Shalaby
Raafat Shalaby
The just-in-time concept, mass customization, omnichannel distribution, and the rising global population have all fueled the logistics sector. Consequently, using automation inside the warehouses to make them more dynamic and sustainable for the future is one of the crucial components to adapt to this quick shift. Giants in the industry and technology are becoming more interested in the “smart warehouse” system, built with innovative warehousing technologies, as an achievable solution for the development of warehouses in the future. To contextualize the past and provide light on prospective future directions, a study of current articles in the literature is important. This study evaluates works published in the previous 32 years related to flexible automation in warehouses to create a framework that future academics might use to guide them in establishing an original conceptual model that might be implemented at warehouses. One hundred eleven selected, examined, and categorized publications were published between 1990 and 2022 to establish a significant foundation for earlier research. Results indicated that combining automated machinery, collecting data technologies, and management systems are essential to creating a flexible automated warehouse. Finally, based on the examined literature, a flexible automated warehouse framework is suggested to direct future research in this field.

1 September 2018 in Journal of the Franklin Institute
Verified
Journal Article
Closed access
MHMohamed Hamdy
Mohamed Hamdy
RSRaafat Shalaby
Raafat Shalaby
MSMostafa Sallam
Mostafa Sallam

1 July 2019 in Communications in Nonlinear Science and Numerical Simulation
Verified
Journal Article
Closed access
RSRaafat Shalaby
Raafat Shalaby
MEMohammad El-Hossainy
Mohammad El-Hossainy
BABelal Abo-Zalam
Belal Abo-Zalam

1 August 2008 in Artificial Organs
Verified
Journal Article
Closed access
PDF file
HNHolger Nahrstaedt
Holger Nahrstaedt
TSThomas Schauer
Thomas Schauer
RSRaafat Shalaby
Raafat Shalaby
SHStefan Hesse
Stefan Hesse
JRJörg Raisch
Jörg Raisch