Zobrazeno 1 - 10
of 256
pro vyhledávání: '"Mohamed Orabi"'
Publikováno v:
Scientific Reports, Vol 13, Iss 1, Pp 1-15 (2023)
Abstract 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
Externí odkaz:
https://doaj.org/article/723ed73a4dfa40fb857a96ca937043bb
Autor:
Alaa A. Mahmoud, Ahmed A. Hafez, Ali M. Yousef, Mahmoud A. Gaafar, Mohamed Orabi, Alaa F.M. Ali
Publikováno v:
IET Power Electronics, Vol 16, Iss 1, Pp 11-25 (2023)
Abstract 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 a
Externí odkaz:
https://doaj.org/article/f4ad7fc7b1f74976a0011bb8ebf6ceca
Autor:
Marif Daula Siddique, Saad Mekhilef, Noraisyah Mohamed Shah, N. Sandeep, Jagabar Sathik Mohamed Ali, Atif Iqbal, Mahrous Ahmed, Sherif S. M. Ghoneim, Mosleh M. Al-Harthi, Basem Alamri, Farhan A. Salem, Mohamed Orabi
Publikováno v:
IEEE Access, Vol 8, Pp 5840-5851 (2020)
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 circuitry. The o
Externí odkaz:
https://doaj.org/article/8b2a5e54def64ebcb01f077df7ee190e
Publikováno v:
Energies, Vol 15, Iss 23, p 9254 (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 based on an
Externí odkaz:
https://doaj.org/article/f502ca63239f4651be70287e0b9f9001
Autor:
Mahrous Ahmed, Mohamed Orabi, Sherif Ghoneim, Mosleh Alharthi, Farhan Salem, Bassem Alamri, Saad Mekhilef
Publikováno v:
Automatika, Vol 60, Iss 4, Pp 378-384 (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-level inverte
Externí odkaz:
https://doaj.org/article/213cd606da734443ad98eef98356c1a5
Publikováno v:
Ain Shams Engineering Journal, Vol 9, Iss 4, Pp 3033-3043 (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 802.3af. The pr
Externí odkaz:
https://doaj.org/article/fac800c8bdec4337b21a52a2997810c3
Publikováno v:
Alexandria Engineering Journal, Vol 57, Iss 4, Pp 2415-2426 (2018)
In this paper, New asymmetric cascaded half H bridge multilevel inverter MLI is proposed. It is driven from the conventional asymmetric cascaded half H Bridge multilevel inverter. Thus, the proposed topology inherits its simplicity, flexibility and m
Externí odkaz:
https://doaj.org/article/4c079e44f42a4afdadd9f7e97b15e17b
Publikováno v:
Applied Sciences, Vol 11, Iss 23, p 11266 (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 turn, can res
Externí odkaz:
https://doaj.org/article/b3226b6104d44171afa51c69f24ecffd
Publikováno v:
IET Smart Grid (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 ones is devel
Externí odkaz:
https://doaj.org/article/7f109f5878304d0ab53df8aec339c864
Autor:
Mahrous Ahmed, Essam Hendawi, Basem Alamri, Mosleh Alharthi, Farhan Salem, Mohamed Orabi, Saad Mekhilef, Sherif Ghoneim
Publikováno v:
Energies, Vol 13, Iss 18, p 4715 (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 sources with d
Externí odkaz:
https://doaj.org/article/e6837130efd94c0aa7390480d799b62f