M.M.R. Ahmed

Prof. M.M.R. Ahmed

Faculty of Engineering, Helwan University, Cairo, Al Qāhirah, Egypt

Research Focus & Metrics

Academic Career Length

26Years (2001-Present)

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

Representative Publications

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26 February 2024 in IEEE Access
Verified
Journal Article
Open access
M.M.R. AhmedM.M.R. Ahmed
M.M.R. Ahmed
Sohrab MirsaeidiSohrab Mirsaeidi
Sohrab Mirsaeidi
MKMohsin Ali Koondhar
Mohsin Ali Koondhar
NKNabil Karami
Nabil Karami
ETElsayed Mohamed Tag-Eldin
Elsayed Mohamed Tag-Eldin
Adel M. SharafAdel M. Sharaf
Adel M. Sharaf
In recent years, there has been a proliferation of studies focusing on sustainable energy sources aimed at delivering reliable power with reduced greenhouse gas emissions. Among these endeavors, electrification of urban areas through incorporation of renewable energy sources (RESs) stands out as a pivotal application of RES. Increasingly, the integration of RESs like PV and wind into the power grid is being pursued as an alternative to traditional centralized power stations, offering a means to ensure continuous power supply during peak demand periods while simultaneously managing unit costs, thereby providing a systematic and readily accessible power supply to consumers. This paper presents a comprehensive examination of hybrid wind and PV with focus on achieving consistent DC bus-bar voltage through integration with microcontroller system via buck-boost converter. Additionally, hybrid system’s output voltage is tailored to accommodate necessary battery connections. However, given influence of environmental variables like fluctuations in solar irradiation and wind velocity on power output of PV and wind seamless integration of these sources becomes paramount. To address this challenge MATLAB model is developed to simulate grid integration of hybrid wind and PV, enabling a detailed analysis of integrated grid’s performance. Simulation results are then proposed with those obtained from conventional fossil fuel-based power generation methods. In this research underscores importance of integrating RES into existing power grids and highlights efficacy of hybrid wind and PV in meeting this objective. Findings presented herein contribute to advancing discourse on sustainable energy solutions, offering valuable insights for policymakers, industry stakeholders, and researchers.

6 May 2024 in IEEE Access
Verified
Journal Article
Open access
SASamandar Khan Afridi
Samandar Khan Afridi
MKMohsin Ali Koondhar
Mohsin Ali Koondhar
MJMuhammad Ismail Jamali
Muhammad Ismail Jamali
ZAZuhair Muhammed Alaas
Zuhair Muhammed Alaas
MAMohammed H. Alsharif
Mohammed H. Alsharif
M.M.R. AhmedM.M.R. Ahmed
M.M.R. Ahmed
This research paper conducts an extensive exploration of onshore, offshore, and floating offshore wind turbines, pivotal components in the landscape of sustainable energy generation. The study thoroughly investigates various wind energy systems, shedding light on their distinct attributes, advantages, and limitations. The examination of onshore wind turbines encompasses aspects such as installation procedures, size considerations, wind dynamics, accessibility challenges, and visual impact assessments. Similarly, the analysis of offshore wind turbines covers considerations such as location selection, installation complexities, size variations, wind conditions, environmental impacts, and visual aesthetics. The paper also delves into the emerging technology of floating offshore wind turbines, highlighting their unique features, advantages, and technological advancements. A thorough comparative examination is conducted to assess the economic, environmental, and social aspects of onshore, offshore, and floating offshore wind turbines. The research paper concludes by offering insights into policy considerations, addressing research gaps, and outlining prospects for the seamless integration and advancement of these diverse wind energy systems. This comprehensive review aspires to contribute to the existing knowledge base in sustainable energy generation, fostering informed decision-making for a greener and more sustainable future.

18 July 2025 in Energy Conversion and Management: X
Verified
Journal Article
Open access
MEMohammed Saber Eltohamy
Mohammed Saber Eltohamy
MTM. Hassan Tawfiq
M. Hassan Tawfiq
M.M.R. AhmedM.M.R. Ahmed
M.M.R. Ahmed
ZAZuhair Muhammed Alaas
Zuhair Muhammed Alaas
BMBader Mohammed
Bader Mohammed
ARAmir Raouf
Amir Raouf

4 October 2024 in IEEE Open Journal of Power Electronics
Verified
Journal Article
Open access
VRVenugopal Ramadoss
Venugopal Ramadoss
BCBalaji Chandrasekar
Balaji Chandrasekar
M.M.R. AhmedM.M.R. Ahmed
M.M.R. Ahmed
DSDominic Savio
Dominic Savio
NRNarayanamoorthi Rajamanickam
Narayanamoorthi Rajamanickam
TAThamer A. H. Alghamdi
Thamer A. H. Alghamdi
Electric vehicles (EVs) penetrating the transportation sector are accelerated through environmental concerns, low prices, and increased power density. At the same time, the technologies for wireless charging of EVs are advancing due to their convenience, cost-effectiveness, and reliability as charging solutions. The crucial part of Wireless EV (W-EV) chargers, apart from charging pads and compensation, is the power electronics converters. These converters are essential for converting electrical energy into an appropriate form for efficient transmission and reception. This article provides a comprehensive review of the recent advancements in power converter topologies and their control methods used in W-EV chargers. Depending on the specific requirements of the W-EV charger, these converters can be classified into DC-DC, DC-AC, AC-AC, and AC-DC converters. In addition, the article explores specialized converters such as multiple-stage, multiple-phase, multiple transmitter and multiple receiver-based converters, discussing their technical details, merits and limitations. The control techniques for the power electronics converters utilised in W-EV chargers such as transmitter-side control, receiver-side control and dual controls are presented along with various technical comparative analyses. Challenges and future research directions in advanced power converter topologies for W-EV chargers are outlined at last. This article assists researchers in gaining insights into the recent technological advancements and developments aimed at enhancing the performance of the W-EV charger.

18 December 2023 in IEEE Access
Verified
Journal Article
Open access
MRMasood Rehman
Masood Rehman
Sohrab MirsaeidiSohrab Mirsaeidi
Sohrab Mirsaeidi
NNNursyarizal bin MOHD NOR
Nursyarizal bin MOHD NOR
MKMohsin Ali Koondhar
Mohsin Ali Koondhar
MZMuhammad Ammirul Atiqi Mohd Zainuri
Muhammad Ammirul Atiqi Mohd Zainuri
M.M.R. AhmedM.M.R. Ahmed
M.M.R. Ahmed
Wireless Power Transfer (WPT) using inductive and magnetic resonance coupling developing at enormous pace due to its diversity of applications, such as electric vehicles (EV), biomedical implants, consumer electronics, robotics and so on. This review presents historical background together with applications of low power and high power WPT systems. The review emphasizes on two main design facets of WPT system including compensation networks and coil structure. All up-to-date compensation topologies are comprised in the review along with latest coil designs. Load-independent operation using compensation topologies is also reviewed. The review provides all available methods to analyze the circuit structure of WPT system theoretically and it also outlines the software used for circuit simulations as well as coil design. This paper is diverse from existing reviews in a pattern that it presents not only complete critical intuition on the vital design features, recent advancements, contemporary problems and challenges of low power and high power WPT systems but also provides the available theoretical methods as well as software to analyze the WPT system in wholesome. This paper will enrich the knowledge of the researchers to investigate the WPT systems using existing techniques and to solve the present-day design glitches of WPT systems.

20 June 2022 in IET Electric Power Applications
Verified
Journal Article
Open access
AHAsiful Habib
Asiful Habib
Muhammad Ammirrul  Atiqi Mohd ZainuriMuhammad Ammirrul Atiqi Mohd Zainuri
Muhammad Ammirrul Atiqi Mohd Zainuri
HCHang Seng Che
Hang Seng Che
Ahmad Asrul IbrahimAhmad Asrul Ibrahim
Ahmad Asrul Ibrahim
NRNasrudin Abd Rahim
Nasrudin Abd Rahim
M.M.R. AhmedM.M.R. Ahmed
M.M.R. Ahmed
In recent years, coreless axial‐flux permanent‐magnet (AFPM) machines have been gaining attention. Being coreless, these machines do not experience eddy current (hence hysteresis losses) and has lower cogging torque leading to higher efficiency. However, limitations such as high leakage flux and weak mechanical structure impede its wide application. The results of a systematic review on coreless AFPM machine research is presented, wherein a total of 123 studies have been selected through the Preferred Reported Items for Systematic Reviews and Meta‐Analysis (PRISMA) protocol. About 55% of the articles have been published between 2017 and 2021, indicating recent attention of the researchers on coreless AFPM machines. More than 70% (87 out of 123) of the records have been published by IEEE, which proves the quality and acceptance of the studies. In two‐thirds (77 out of 123) of the studies, single‐stator double‐rotor has been adopted as the machine topology, and in 71.8% (84 out of 123) cases, trapezoidal shape magnets have been used in conventional array. The key research areas on coreless AFPM identified through this review are to produce an efficient design for multiphase and multi‐stage topology and develop lightweight rotor and stator structures.