Аhmed Ibrahim
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View article: Pathways to environmental sustainability through energy efficiency: A strategic next energy vision for sustainable development by 2050
Pathways to environmental sustainability through energy efficiency: A strategic next energy vision for sustainable development by 2050 Open
As the global push for carbon neutrality accelerates, energy efficiency has become essential for sustainable development, especially for nations like Nigeria that face rising energy demands and significant environmental challenges. This st…
View article: FINTECH PENETRATION AND CLIMATE-SMART INFRASTRUCTURE: EVIDENCE FROM RENEWABLE ENERGY FINANCING IN THE GLOBAL SOUTH
FINTECH PENETRATION AND CLIMATE-SMART INFRASTRUCTURE: EVIDENCE FROM RENEWABLE ENERGY FINANCING IN THE GLOBAL SOUTH Open
This study investigates the impact of financial technology (fintech) penetration on renewable energy investment in developing countries between 2010 and 2024. Drawing on a balanced panel dataset covering 60 developing economies, the study …
View article: Filter bank common spatial pattern and envelope-based features in multimodal EEG-fTCD brain-computer interfaces
Filter bank common spatial pattern and envelope-based features in multimodal EEG-fTCD brain-computer interfaces Open
Brain-computer interfaces (BCIs) provide alternative means of communication and control for individuals with severe motor or speech impairments. Multimodal BCIs have been introduced recently to enhance the performance of BCIs utilizing sin…
View article: Filter bank common spatial pattern and envelope-based features in multimodal EEG-fTCD brain-computer interfaces
Filter bank common spatial pattern and envelope-based features in multimodal EEG-fTCD brain-computer interfaces Open
Brain-computer interfaces (BCIs) exploit brain activity to bypass neuromuscular control with the aim of providing alternative means of communication with the surrounding environment. Such systems can significantly improve the quality of li…
View article: Shunt active power filter control based on Z-source inverter fed by PV system
Shunt active power filter control based on Z-source inverter fed by PV system Open
In this paper, an integration of a Z-source inverter (ZSI)-based shunt active power filter (SAPF) fed by a photovoltaic (PV) system for the enhancement of power quality is proposed. The ZSI provides substantial advantages including improve…
View article: A biochar and Fulvic Acid Usage-Based Approach to Reduce Pollution Resulting from the use of Mineral Fertilizers
A biochar and Fulvic Acid Usage-Based Approach to Reduce Pollution Resulting from the use of Mineral Fertilizers Open
Nowadays, due to pollution in world due to due to excessive consumption of mineral fertilizers, the limiting or minimizing their use has become a major strategy for environmentalists. The research work objective was to reduce quantities of…
View article: A novel hybrid analytical/iterative method to extract the single-diode model's parameters using Lambert's W-function
A novel hybrid analytical/iterative method to extract the single-diode model's parameters using Lambert's W-function Open
The evaluation of photovoltaic device performance is based on the I-V characteristic curve. Unfortunately, the data sheets provided by the manufacturers only include data at standard test conditions, which requires the construction of a mo…
View article: EFFECTS OF MINERAL FERTILIZATION, BIOCHAR AND FULVIC ACID ON SANDY SOIL PROPERTIES AND NUTRIENTS UPTAKE BY WHEAT PLANTS
EFFECTS OF MINERAL FERTILIZATION, BIOCHAR AND FULVIC ACID ON SANDY SOIL PROPERTIES AND NUTRIENTS UPTAKE BY WHEAT PLANTS Open
Nowadays, due to population growth in Egypt, the reclamation of degraded soils e.g., sandy soil is becoming a major strategy for the government. Therefore, the aim of this research work was to improve sandy soil properties and optimize the…
View article: Maximum power point tracking of photovoltaic array using fuzzy logic control
Maximum power point tracking of photovoltaic array using fuzzy logic control Open
This research introduces the simulation of photovoltaic (PV) array to track the peak point (MPPT) using fuzzy logic control. Therefore, real time simulation is performed in MATLAB/Simulink based on a PV model, boost converter and fuz…
View article: Improved space vector modulation algorithm of 5-level three-phase z-source based cascaded inverter
Improved space vector modulation algorithm of 5-level three-phase z-source based cascaded inverter Open
The integration of a Z-source network with a 5-Level three-phase inverter based cascaded to provide voltage step-up function is proposed in this paper. The system is controlling by an improved space vector modulation (SVM) the implantation…
View article: A novel hybrid numerical with analytical approach for parameter extraction of photovoltaic modules
A novel hybrid numerical with analytical approach for parameter extraction of photovoltaic modules Open
View article: Vascular endothelial growth factor: A novel marker for torsion-induced incomplete cervical dilatation in Egyptian buffaloes
Vascular endothelial growth factor: A novel marker for torsion-induced incomplete cervical dilatation in Egyptian buffaloes Open
Aim: This study aimed to evaluate the histopathological changes, variable collagen concentrations, and vascular endothelial growth factor expressions in uterine and cervical tissues following successful detorsion. Methods: Animals were cla…
View article: Mapping Spatial Management Zones of Salt-Affected Soils in Arid Region: A Case Study in the East of the Nile Delta, Egypt
Mapping Spatial Management Zones of Salt-Affected Soils in Arid Region: A Case Study in the East of the Nile Delta, Egypt Open
Soil salinization is a global problem that affects a large part of the world, especially arid and semi-arid regions. Hence, diagnosing soil salinity is the first step towards appropriate management. The current work aims to assess and map …
View article: Parameters identification and optimization of photovoltaic panels under real conditions using Lambert W-function
Parameters identification and optimization of photovoltaic panels under real conditions using Lambert W-function Open
View article: Modeling Wind Speed Based on Fractional Ornstein-Uhlenbeck Process
Modeling Wind Speed Based on Fractional Ornstein-Uhlenbeck Process Open
The primary task of the design and feasibility study for the use of wind power plants is to predict changes in wind speeds at the site of power system installation. The stochastic nature of the wind and spatio-temporal variability explains…
View article: Optimal design and analysis of DC–DC converter with maximum power controller for stand-alone PV system
Optimal design and analysis of DC–DC converter with maximum power controller for stand-alone PV system Open
View article: Methodology of optimum unit commitment of energy systems with renewable energy sources
Methodology of optimum unit commitment of energy systems with renewable energy sources Open
One of the promising ways to improve the reliability and efficiency of power supply for customers in the areas remote from central electrical grid is the use of hybrid power systems with renewable energy sources. The primary task of design…
View article: EXSCD, An Expert System for Construction Disputes (Dept.C)
EXSCD, An Expert System for Construction Disputes (Dept.C) Open
The objective of this research paper is to provide a prototype expert system that can materially help to reduce the likelihood of construction disputes. The inputs of this system include many relevant factors that can adequately describe t…
View article: Improved dead-time elimination method for three-phase power inverters
Improved dead-time elimination method for three-phase power inverters Open
In real inverters' operations, it is essential to insert delay time in the pulses provided to the inverter switches to protect the DC link against the short circuits. From this situation, the dead time phenomenon is introduced that causes …
View article: Analysis of application of back-to-back HVDC system in Tomsk electric power system
Analysis of application of back-to-back HVDC system in Tomsk electric power system Open
In this article the research results of application of back-to-back HVDC system in the Tomsk electric power system are presented. Historically, power transmission between the South to the North parts of the Tomsk electric power system is r…
View article: Mode analysis and parameter selection of voltage inverter and maximum power controller of a stand-alone photovoltaic station
Mode analysis and parameter selection of voltage inverter and maximum power controller of a stand-alone photovoltaic station Open
The purpose is to develop a methodology for selecting the parameters of the main components of a stand-alone photovoltaic station: a step-down voltage inverter and a maximum power point search controller, which ensure the most efficient co…
View article: Comprehensive Validation of Transient Stability Calculations in Electric Power Systems and Hardware-Software Tool for Its Implementation
Comprehensive Validation of Transient Stability Calculations in Electric Power Systems and Hardware-Software Tool for Its Implementation Open
Reliability and survivability of electric power systems (EPS) depend on transient stability assessment (TSA). One of the most effective way to TSA is time-domain simulation. However, large-scale EPS mathematical model contains a stiff nonl…
View article: Research, Development and Application of Hybrid Model of Back-to-Back HVDC Link
Research, Development and Application of Hybrid Model of Back-to-Back HVDC Link Open
Recent hybrid simulators (or co-simulators) of the electric power system are focused on scientific and research features to propose and develop novel and more accurate simulators. The present paper demonstrates one more hybrid modelling ap…
View article: Optimal Performance of Dynamic Particle Swarm Optimization Based Maximum Power Trackers for Stand-Alone PV System Under Partial Shading Conditions
Optimal Performance of Dynamic Particle Swarm Optimization Based Maximum Power Trackers for Stand-Alone PV System Under Partial Shading Conditions Open
One of the important tasks for increasing the efficiency of photovoltaic (PV) system is the development and improvement of the maximum power point tracking algorithms (MPPT). These MPPT algorithms lead to the ability to catch efficiently t…
View article: Assessment of Model Predictive Voltage Control for Autonomous Four-Leg Inverter
Assessment of Model Predictive Voltage Control for Autonomous Four-Leg Inverter Open
The Finite control set model predictive control (FCS-MPC) is recently introduced to control inverters without the modulation stage. The absence of the modulation stage gives an unpredictable performance of the control system. In this paper…
View article: Power Balance Management of an Autonomous Hybrid Energy System Based on the Dual-Energy Storage
Power Balance Management of an Autonomous Hybrid Energy System Based on the Dual-Energy Storage Open
The urgent task of modern energy is to ensure reliable and efficient power supply to consumers, even those located in remote, far end places. A hybrid energy system with renewable energy sources is a promising way to ensure such a process.…
View article: Optimal parameters selection of particle swarm optimization based global maximum power point tracking of partially shaded PV
Optimal parameters selection of particle swarm optimization based global maximum power point tracking of partially shaded PV Open
This paper presents optimal parameters selection of particle swarm optimization (PSO) algorithm for determining the global maximum power point tracking of photovoltaic array under partially shaded conditions. Under partial shading, the pow…
View article: Performance Enhancement of Micro Grid System with SMES Storage System Based on Mine Blast Optimization Algorithm
Performance Enhancement of Micro Grid System with SMES Storage System Based on Mine Blast Optimization Algorithm Open
Frequency control represents a critically significant issue for the enhancement of the dynamic performance of isolated micro grids. The micro grid system studied here was a wind–diesel system. A new and robust optimization technique called…
View article: Selected Harmonics Elimination for Modified Multilevel Inverter with Bi-Directional Switches
Selected Harmonics Elimination for Modified Multilevel Inverter with Bi-Directional Switches Open
Multilevel inverters are receiving continuous attention in terms of circuit topology, control methods and applications.This paper presents a modified topology that applies a bidirectional switching module to reduce the number of switches o…
View article: Maximum power point tracking of partially shading PV system using cuckoo search algorithm
Maximum power point tracking of partially shading PV system using cuckoo search algorithm Open
This paper presents a cuckoo search (CS) algorithm for determining the global maximum power point (GMPP) tracking of photovoltaic (PV) under partial shading conditions (PSC). The conventional methods are fail to track the GMPP under PSC, w…