Zobrazeno 1 - 10
of 35
pro vyhledávání: '"Omar Kherif"'
Publikováno v:
ENP Engineering Science Journal, Vol 4, Iss 1, Pp 15-22 (2024)
The objective of this paper is to investigate the behavior of electric charges on cap-pin glass insulator under 50 Hz AC voltage. The study is conducted using COMSOL Multiphysics to understand the charge location, polarity, and parameters affecting t
Externí odkaz:
https://doaj.org/article/b711f2fa57a547ffb3f5934b3f262652
Publikováno v:
IEEE Access, Vol 10, Pp 19348-19355 (2022)
Cutting and punching of the steel used in power transformer core may cause edge burrs. This, along with the degradation of the lamination insulation, can lead to interlaminar short circuits. Analysing these faults helps understanding their effect on
Externí odkaz:
https://doaj.org/article/f6a7356a34d84329934e470bd226a8a8
Publikováno v:
IEEE Access, Vol 10, Pp 50925-50932 (2022)
This paper deals with the detection and classification of two types of lamination faults (i.e., edge burr and lamination insulation faults) in a three-phase transformer core. Previous experimental results are exploited, which are obtained by employin
Externí odkaz:
https://doaj.org/article/48eeb271c3f74639907e1101a152700a
Publikováno v:
ENP Engineering Science Journal, Vol 1, Iss 2, Pp 17-25 (2021)
This paper deals with the diagnosis of cascaded H-bridge multilevel inverters controlled by a sinusoidal level-shifted pulse-width modulation technique. For this purpose, the behaviour of 3, 5, 7 and 9-level inverters is studied for regular and fault
Externí odkaz:
https://doaj.org/article/e299dea92c82407988eacb25fcb0b0d7
Autor:
Omar Kherif, Benalia Haddad, Fatma-Zohra Bouras, Mounir Seghouani, Bahia Zemmouri, Ramzi Gamouh, Nadia Hamzaoui, Amira Larbi, Nazih-Yacer Rebouh, Mourad Latati
Publikováno v:
Agriculture, Vol 13, Iss 5, p 947 (2023)
It is well known that multiple interactions can occur between nitrogen and water use, depending on climate, soil and crop characteristics, in crop growth and yield development. However, little is known about the simultaneous change in both water and
Externí odkaz:
https://doaj.org/article/c0d381075b7545308b9095e64e15acd8
Publikováno v:
IEEE Access, Vol 9, Pp 81693-81701 (2021)
Dissolved gas analysis (DGA) is the standard technique to diagnose the fault types of oil-immersed power transformers. Various traditional DGA methods have been employed to detect the transformer faults, but their accuracies were mostly poor. In this
Externí odkaz:
https://doaj.org/article/5e7c44a3732c4a8d8a6d288ce2bc3820
Autor:
Fatma-Zohra Bouras, Salah Hadjout, Benalia Haddad, Asma Malek, Sonia Aitmoumene, Feriel Gueboub, Luiza Metrah, Bahia Zemmouri, Omar Kherif, Nazih-Yacer Rebouh, Mourad Latati
Publikováno v:
Agriculture, Vol 13, Iss 2, p 338 (2023)
It is well known that legume–cereal intercropping systems are more efficient in terms of resources use, in particular nitrogen (N) and water. However, the response of this cropping system to water and N co-limitation was poorly studied in most of t
Externí odkaz:
https://doaj.org/article/e99990b456b64285ad8e11d6aac2d163
Autor:
Omar Kherif, Mounir Seghouani, Bahia Zemmouri, Abderrahim Bouhenache, Mohamed Islam Keskes, Rebouh Yacer-Nazih, Walid Ouaret, Mourad Latati
Publikováno v:
Agronomy, Vol 11, Iss 6, p 1225 (2021)
Wheat–chickpea intercrops are not well studied, despite the importance of these two species in increasing agricultural profitability and ensuring nutritional and food security. The present study aims to assess the intercropping arable system’s se
Externí odkaz:
https://doaj.org/article/a5958f16c3074b70a8d7c8c0277fd3ac
Publikováno v:
Energies, Vol 14, Iss 10, p 2970 (2021)
The main objective of the current work was to enhance the transformer fault diagnostic accuracy based on dissolved gas analysis (DGA) data with a proposed coupled system of support vector machine (SVM)-bat algorithm (BA) and Gaussian classifiers. Six
Externí odkaz:
https://doaj.org/article/f73a325d1f844d01b129582a546bbba3
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