Zobrazeno 1 - 10
of 36
pro vyhledávání: '"Eman Hamdan"'
Autor:
Mohamed G. Abdel-Moneim, Mostafa S. Hamad, Ayman S. Abdel-Khalik, Ragi R. Hamdy, Eman Hamdan, Shehab Ahmed
Publikováno v:
Alexandria Engineering Journal, Vol 96, Iss , Pp 268-278 (2024)
Current source inverters (CSIs) have been widely used for renewable energy sources integration with the utility grid. However, traditional CSIs provide only voltage-boost power conversion, which can be considered a limitation for grid-interfacing app
Externí odkaz:
https://doaj.org/article/8c8d49e0d92244bdbb9abd7e5092ac1f
Autor:
Mohammed El-Nagar, Omar Elattar, Khaled Ahmed, Eman Hamdan, Ayman S. Abdel-Khalik, Mostafa S. Hamad, Shehab Ahmed
Publikováno v:
Alexandria Engineering Journal, Vol 77, Iss , Pp 265-281 (2023)
This paper presents an improved current control strategy for a three-phase voltage source converter connected to distorted grid. The proposed controller can successfully compensate the induced harmonic currents, while suppressing possible active powe
Externí odkaz:
https://doaj.org/article/c4b9848f3d274a3399e6a17c07d3df5a
Autor:
Mohamed Y. Metwly, Mohamed Ahmed, Mostafa S. Hamad, Ayman S. Abdel-Khalik, Eman Hamdan, Noha A. Elmalhy
Publikováno v:
Alexandria Engineering Journal, Vol 65, Iss , Pp 749-760 (2023)
Electric vehicles (EVs) have shown promise in providing ancillary services, e.g., frequency regulation. This is mainly due to their capacities and fast response. On the contrary, the rapid integration of EVs in the grid poses challenges, such as freq
Externí odkaz:
https://doaj.org/article/49ecdc20c5a4402da6f9f28ba563fe1d
Publikováno v:
Alexandria Engineering Journal, Vol 61, Iss 12, Pp 11277-11290 (2022)
Lithium-ion (Li-ion) batteries are the workhorse of energy storage systems in electric vehicles (EVs) due to their high energy density and desirable characteristics. To obtain an optimized and safe operation, a battery management system (BMS) should
Externí odkaz:
https://doaj.org/article/ffa5f7d664ca4d0fab24f292460b2b8f
Autor:
Reda Issa, Mohamed M. Badr, Omar Shalash, Ali A. Othman, Eman Hamdan, Mostafa S. Hamad, Ayman S. Abdel-Khalik, Shehab Ahmed, Sherif M. Imam
Publikováno v:
Batteries, Vol 9, Iss 10, p 521 (2023)
Accurately estimating the state-of-charge (SOC) of lithium-ion batteries (LIBs) in electric vehicles is a challenging task due to the complex dynamics of the battery and the varying operating conditions. To address this, this paper proposes the estab
Externí odkaz:
https://doaj.org/article/31e826bf5f02477f92de4af54e0822e3
Autor:
Abdullah Shawier, Mahmoud S. Abdel-Majeed, Wessam E. Abdel-Azim, Ayman Samy Abdel-Khalik, Mostafa S. Hamad, Shehab Ahmed, Eman Hamdan, Noha A. Elmalhy
Publikováno v:
IEEE Access, Vol 10, Pp 80587-80599 (2022)
Electric propulsion based on six-phase machines in marine propulsion and automotive traction applications are undergoing rapid development due to its high capacity, fault tolerance, reduced size, and reduced torque pulsations. Among different control
Externí odkaz:
https://doaj.org/article/80ae7b82032c43fc98e2cb3124160367
Autor:
Mohammed El-Nagar, Khaled Ahmed, Eman Hamdan, Ayman S. Abdel-Khalik, Mostafa S. Hamad, Shehab Ahmed
Publikováno v:
Applied Sciences, Vol 13, Iss 15, p 9023 (2023)
Proper operation of the grid-tie transformerless converters under unbalanced and distorted conditions entails a precise detection of the frequency and fundamental component of the grid voltage. One of the main problems that could arise during the est
Externí odkaz:
https://doaj.org/article/f5aa39c648284b29a24031a3801fd442
Autor:
Mohamed M. Badr, Mostafa S. Hamad, Ayman S. Abdel-Khalik, Ragi A. Hamdy, Shehab Ahmed, Eman Hamdan
Publikováno v:
IEEE Access, Vol 9, Pp 159113-159132 (2021)
Fault identification in Photovoltaic (PV) array is a contemporary research topic motivated by the higher penetration levels of PV systems in recent electrical grids. Therefore, this work aims to define an optimal Machine learning (ML) structure of au
Externí odkaz:
https://doaj.org/article/300502b84c9941518dc4d2c79c84e59e
Autor:
Yousef Nazih, Abdelrahman Ismail, Azza A. Faiad, Eman Hamdan, Mostafa S. Hamad, Ayman S. Abdel-Khalik
Publikováno v:
Alexandria Engineering Journal, Vol 59, Iss 6, Pp 4821-4842 (2020)
Series-stacked architectures have been successfully deployed for data center applications at substantially higher efficiencies than conventional power delivery architectures. In the series-stacked architectures, servers are series-connected electrica
Externí odkaz:
https://doaj.org/article/5175a2e7c94a44d6869031227ec792a6
Publikováno v:
Alexandria Engineering Journal, Vol 59, Iss 3, Pp 1833-1846 (2020)
The number of data centers worldwide has been growing exponentially to serve a multitude of aspects of modern life. The major challenges that face data centers operators are the rising electricity bills, growing carbon footprints, and unexpected powe
Externí odkaz:
https://doaj.org/article/4ebc075555e948a4b79d9408b06cb579