Explanipedia

A Wireless Power Transfer System Based on Hybrid Self-Switching of Coupled Inductors Open

Hemiao Liu, Hao Chen, Xing Wang, Yassen Gorbounov, Mohamed Orabi , et al. · 2025

This paper proposes a wireless power transfer (WPT)system based on hybrid self-switching of coupled inductor (WPT-HSCI) that not only realizes constant current (CC)/constantvoltage (CV) output but also effectively copes with a variety ofab…

Real-time mode of operation data analysis to catch the thread-tip denotes the failure cause of the grid-tie PV central inverter Open

Youssef Hassan, Mohamed Orabi, Mahmoud A. Gaafar · 2023

The inverter is considered the core of the PV power plant. The inverter’s failure leads to generation loss and decreases plant availability. So, it is required to investigate a clear Root Cause Analysis (RCA) to deduce the failure causes a…

Real-Time Mode of Operation Data Analysis to Catch the Thread-Tip Denotes the Failure Cause of the Grid- Tie PV Central Inverter Open

Youssef Badry, Mohamed Orabi, Mahmoud A. Gaafar · 2023

The inverter is considered the core of the PV power plant. The inverters failure leads to generation loss and decreasing the plant availability. So, it is required to investigate a clear Root Cause Analysis (RCA) to deduce the failure caus…

High Robust Control Model of High Step Up Three Phase Y Source Inverters based on Model Predictive Control Open

Mohamed A. Ismeil, Mohamed Orabi, Omima Abdelaal · 2023

Considering the spread spectrum problem of finite-control-set model predictive control (FCS-MPC), a Model predictive control technique for the quasi Y-Source Inverter with RL load to enhance the following effectiveness of the tracking effi…

Fulfill Optimum Calibrated Size of LED Driver Components for Solar Street Lighting Fixture by Adjusting the LEDs Connections Open

Mohamed A. Ismeil, Youssef Hassan, Mohamed Orabi, Abdulaziz Alshareef, Hany S. Hussein · 2023

Since using of Light-Emitting Diode (LED) lighting fixtures, researchers are working to improve the efficiency and increase the lifetime of LEDs. Each LED lighting fixture consists of two main parts, the 1st part is LEDs lenses that produc…

Evaluation of the Effect of Electric Vehicle Charging on the Aging of Distribution Transformers: Aswan City Case of Study Open

Wesam Rohouma, Omar Abdel‐Rahim, Mostafa Ali, Mahmoud A. Gaafar, Mustafa Dardeer , et al. · 2023

Enhanced Virtual Inertia Control for Microgrids with High-Penetration Renewables Based on Whale Optimization Open

Asmaa Faragalla, Omar Abdel‐Rahim, Mohamed Orabi, Esam H. Abdelhameed · 2022

High penetration of renewable energy sources into isolated microgrids (µGs) is considered a critical challenge, as µGs’ operation at low inertia results in frequency stability problems. To solve this challenge, virtual inertia control base…

Fault‐tolerant modular multilevel converter for a seamless transition between stand‐alone and grid‐connected microgrid Open

Alaa A. Mahmoud, Ahmed A. Hafez, Ali M. Yousef, Mahmoud A. Gaafar, Mohamed Orabi , et al. · 2022

Recently, renewable distributed generation (DG) systems have emerged to improve the power system security and reliability while reducing the environmental incompatibility of fossil fuel power plants. DG could operate either as a standalone…

Common-Ground Photovoltaic Inverters for Leakage Current Mitigation: Comparative Review Open

Mahmoud A. Gaafar, Mohamed Orabi, Ahmed M. Ibrahim, Ralph Kennel, Mohamed Abdelrahem · 2021

In photovoltaic systems, parasitic capacitance is often formed between PV panels and the ground. Because of the switching nature of PV converters, a high-frequency voltage is usually generated over these parasitic capacitances; this, in tu…

Performance Investigation of Switched Reluctance Motor Driven by Quasi-Z-Source Integrated Multiport Converter with Different Switching Algorithms Open

Mahmoud A. Gaafar, Arwa Abdelmaksoud, Mohamed Orabi, Hao Chen, Mostafa Dardeer · 2021

Switched reluctance machines (SRMs) have received increasing attention for their many potential uses, such as for wind power and electric vehicle (EV) drive systems. The Quasi-Z-source Integrated Multiport Converter (QZIMPC) was recently i…

Multilevel converter integration for low voltage ride through controlling renewable wind energy conversion systems Open

Mahrous Ahmed, Basem Alamri, Mohamed Metwally, Mosleh M. Alharthi, Ali Alzaed , et al. · 2021

In this study, a new control of grid-connected doubly-fed induction generators (DFIGs) is introduced to attain lowvoltage ride-through capability. The grid-side converter is proposed to be a multilevel converter (MLC) controlled by convent…

Classical Control for Unequal DC Sources Five-Level Inverter-Based SHE Technique Open

Mahrous Ahmed, Essam Hendawi, Basem Alamri, Mosleh M. Alharthi, Farhan A. Salem , et al. · 2020

This study proposes a classical control algorithm for solving the transcendental set of equations for the unequal DC sources of five-level multilevel inverters (MLIs). Such sources can be generated from renewable energy sources. Two DC sou…

Improvement of Extracted Power of Pole Mounted Solar Panels by Effective Cooling Using Aluminum Heat Sink under Hot Weather and Variable Wind Speed Conditions Open

Youssef Hassan, Mohamed Orabi, Abdulaziz Alshreef, Omar M. Al‐Rabghi, Badr Habeebullah , et al. · 2020

The increase in operating temperature of PV generators leads to degradation of their performance. These adverse effects of high temperatures are considered as one of the most important problems that solar panel operation faces in hot weath…

Classification of Three-Phase Grid-Tied Microinverters in Photovoltaic Applications Open

Ahmed Shawky, Mahrous Ahmed, Mohamed Orabi, Abdelali El Aroudi · 2020

Microinverters are an essential part of the photovoltaic (PV) industry with significant exponential prevalence in new PV module architectures. However, electrolyte capacitors used to decouple double line frequency make the single-phase mic…

A Phase-Shift-Modulated LLC-Resonant Micro-Inverter Based on Fixed Frequency Predictive-MPPT Open

Omar Abdel‐Rahim, Nehmedo Alamir, Mohamed Abdelrahem, Mohamed Orabi, Ralph Kennel , et al. · 2020

Maximum Power Point Tracking (MPPT) control is an essential part of every photovoltaic (PV) system, in order to overcome any change in ambient environmental conditions and ensure operation at maximum power.. Recently, micro-inverters have …

Single‐loop control scheme for electrolytic capacitor‐less AC–DC rectifiers with PFC in continuous conduction mode Open

Mahmoud Nassary, Mohamed Orabi, Abdelali El Aroudi · 2020

A new simplified control scheme is proposed for AC–DC electrolytic capacitor‐less converters operating in continuous conduction mode (CCM). The proposed method has a single‐loop controller responsible for both regulation and power factor c…

A Single DC Source Nine-Level Switched-Capacitor Boost Inverter Topology With Reduced Switch Count Open

Marif Daula Siddique, Basem Alamri, Farhan A. Salem, Mohamed Orabi, Saad Mekhilef , et al. · 2019

This paper presents a new boost inverter topology with nine level output voltage waveform using a single dc source and two switched capacitors. The capacitor voltages are self-balancing and thus is devoid of any sensors and auxiliary circu…

SMART HOME AUTOMATION AND SECURITY SYSTEM DESIGN BASED ON IOT APPLICATIONS Open

Shameem Ahmad, Arghya Saha, Leong Wen Chek, Saad Mekhilef, Tariful Azam , et al. · 2019

Conventional Home Automation Systems lack many of the essential properties of home automation system, which are now easily accessible with modern technologies like IoT where every device is connected and can be controlled through internet.…

Selective harmonic elimination method for unequal DC sources of multilevel inverters Open

Mahrous Ahmed, Mohamed Orabi, Sherif S. M. Ghoneim, Mosleh M. Alharthi, Farhan A. Salem , et al. · 2019

This paper presented an analytical and closed-form solution for the harmonic contents that were injected in the five-level inverters from asymmetrical DC sources or batteries which were suitable for renewable energy sources. In the five-le…

Multi-Input Ćuk-Derived Buck-Boost Voltage Source Inverter for Photovoltaic Systems in Microgrid Applications Open

Eltaib Abdeen D. Ibrahim, Mahmoud A. Gaafar, Mohamed Orabi, Emad M. Ahmed, Abdelali El Aroudi · 2019

This paper presents a multi-input Ćuk-derived Buck-Boost voltage source inverter (CBBVSI) for Photovoltaic (PV) systems. The proposed topology consists of a single-stage DC-AC inverter that combines both DC-DC and DC-AC stages. The DC-DC s…

Low operational cost distributed prioritised coordinated control for DC microgrids Open

Mohamed Zaery, Emad M. Ahmed, Mohamed Orabi · 2019

This study presents a distributed prioritised coordinated control topology that has the capability to reduce the total generation cost and maintain the average DC microgrid voltage. The main advantage of this topology over the addressed on…

Three Phase Semi-Z-Sourde Inverter for PV Applications. Open

Mohamed Abdelrahem, Ralph Kennel, Mohamed A. Ismeil, Mohamed Orabi · 2019

Power management system for Ethernet-based IoT devices Open

Khaled H. Ahmed, El-Sayed Hasaneen, Mohamed Orabi · 2018

A novel four switches single inductor differential output synchronous buck converter architecture for the power-over-Ethernet (PoE) system is proposed in this paper. A powered device (PD) interface is designed to meet the PoE IEEE Std 802.…

Analysis and Control of Electrolytic Capacitor-Less LED Driver Based on Harmonic Injection Technique Open

Mahmoud Nassary, Mohamed Orabi, Manuel Arias, Emad M. Ahmed, El-Sayed Hasaneen · 2018

AC-DC LED drivers may have a lifespan shorter than the lifespan of LED chips if electrolytic capacitors are used in their construction. Using film capacitors solves this problem but, as their capacitance is considerably lower, the low-freq…

Asymmetric cascaded half-bridge multilevel inverter without polarity changer Open

Mahrous Ahmed, Ahmed Sheir, Mohamed Orabi · 2017

Modified Finite Control Set-Model Predictive Controller (MFCS-MPC) for quasi Z-Source Inverters based on a Current Observer Open

Abualkasim Bakeer, Mohamed A. Ismeil, Mohamed Orabi · 2017

The Finite Control Set-Model Predictive Controller (FCS-MPC) for quasi Z-Source Inverters (qZSIs) is designed to reduce the number of sensors by proposing a current observer for the inductor current. Unlike the traditional FCS-MPC algorith…

Modeling and Controller Design of Non Ideal Z-Source Converter Open

Mohamed A. Ismeil, Abdellah Kouzou, Ralph Kennel, Abdalla Ahmed Ibrahim, Mohamed Orabi , et al. · 2017

This paper deals with the study of the non-ideal Z-Source inverter where the inductors and capacitors resistance are taken into account, while the main aim of the Z-source inverter for performing voltage buck and boost capabilities using a…

PWM Control Techniques for Single-Phase Multilevel Inverter Based Controlled DC Cells Open

Mahmoud A. Sayed, Mahrous Ahmed, Maha G. Elsheikh, Mohamed Orabi · 2016

This paper presents a single-phase five-level inverter controlled by two novel pulse width modulation (PWM) switching techniques. The proposed PWM techniques are designed based on minimum switching power loss and minimum total harmonic dis…

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