@article { author = {Zeidan, Zaki and Azzam, Huda and Elwazeer, Mona and Rashed, Wessam}, title = {Strategy of Advancement in Interfaces Slums after the Revolution of January 25 (Rice Straw as One of the Architectural Solutions Environment Friendly Interfaces in Egypt).}, journal = {MEJ- Mansoura Engineering Journal}, volume = {38}, number = {2}, pages = {1-12}, year = {2020}, publisher = {Mansoura University, Faculty of Engineering}, issn = {1110-0923}, eissn = {2735-4202}, doi = {10.21608/bfemu.2020.114604}, abstract = {This paper discusses through the theoretical approach the problem of squatters and its growth in Egypt. The impacts of these squatter areas upon the urban environment also have been indicated. the role of designed residential projects to reduce the phenomenon of informal building and heterogeneity in the urban escape of  built  residential areas , by  identifying the phenomenon in residential areas , in general, and in selected area in egypt, in particular, and present a designed housing projects (global and local ) , that achieve homogeneous formal unity at the level of the urban escape, the research identified the principles and the elements of  building scene and the organization bases that can be a substitute for the informal building and the heterogeneity of urban escape in built residential areas , The paper proposed an urban planning project in order to solve the problem of visual pollution and share in developing and upgrading the total area. This research has been studied from three sides: -                }, keywords = {slums building,environment friendly interfaces,experimental prototypes}, url = {https://bfemu.journals.ekb.eg/article_114604.html}, eprint = {https://bfemu.journals.ekb.eg/article_114604_4e9522c81f9b1f6b1d898573d2c26993.pdf} } @article { author = {Ammar, Y. and Kaddah, Sahar and Abd-Elwahab, S. and Aly, A.}, title = {Enhancement of Active and Reactive Power Flow Control over the Transmission Line Using Unified Power Flow Controller.}, journal = {MEJ- Mansoura Engineering Journal}, volume = {38}, number = {2}, pages = {1-14}, year = {2020}, publisher = {Mansoura University, Faculty of Engineering}, issn = {1110-0923}, eissn = {2735-4202}, doi = {10.21608/bfemu.2020.117016}, abstract = {In recent years, power demand has increased substantially while the expansion of power generation and transmission has been severely limited due to limited resources and environmental restrictions. As consequences, some transmission lines are heavily loaded, and the system stability becomes a power transfer limiting factor. Flexible alternating current transmission systems (FACTS) technology opens up new opportunities for controlling power and enhancing the usable capacity of presents, as well as new and upgraded lines. The unified power flow controller (UPFC) is a second-generation FACTS device which enables independent control of active and reactive power besides improving reliability and quality of the supply. The Unified Power Flow Controller (UPFC) can control active and reactive power flow in transmission line by means of injection controllable series voltage to the transmission line. This paper introduces a new vision of using UPFC that enhances and widens the range of controlling both active and reactive power flow while minimizing the harmonics and keeping the voltage in the specified limit. A model of 110Mvar GTO based UPFC on a 500KV transmission system is simulated and its response is analyzed using MATLAB program.  }, keywords = {FACTS,MATLAB/ SIMULINK,Real and Reactive Power,UPFC}, url = {https://bfemu.journals.ekb.eg/article_117016.html}, eprint = {https://bfemu.journals.ekb.eg/article_117016_9a25ea916662a0b0430ee492b83e683e.pdf} } @article { author = {Hassan, A. and Amin, A. and Farahat, A.}, title = {A Three-Phase Induction Motor Performance under Different Loading Types supplied from Balanced and Unbalanced Thyristorized Supply Voltage.}, journal = {MEJ- Mansoura Engineering Journal}, volume = {38}, number = {2}, pages = {15-39}, year = {2020}, publisher = {Mansoura University, Faculty of Engineering}, issn = {1110-0923}, eissn = {2735-4202}, doi = {10.21608/bfemu.2020.117181}, abstract = {Induction motors are used extensively in a wide variety of industrial applications. The development in the power electronics field have led to an ever- increasing use of thyristors switching devices in the induction motors supply voltage control for the purpose of speed control, soft starting, and energy saving in these applications. Such power electronics switching devices generate different waveforms patterns of nonsinusoidal voltage according to balanced and unbalanced condition of their operation. So, the present paper investigates the impact of this nonsinusoidal supply voltage waveforms on the dynamic performance of a three-phase induction motor during balanced and unbalanced operation. Also, this paper considers the IM operation at different loading conditions. A MATLAB program has been used to model the thyristorized induction motor performance.}, keywords = {}, url = {https://bfemu.journals.ekb.eg/article_117181.html}, eprint = {https://bfemu.journals.ekb.eg/article_117181_8c047e5bbef9cf947ab221fb59c013d6.pdf} } @article { author = {Tantawy, E. and Badran, Ebrahim and Abdel Rahman, Mansour}, title = {Investigation of Electromagnetic Transients in Electric Power Systems.}, journal = {MEJ- Mansoura Engineering Journal}, volume = {38}, number = {2}, pages = {40-49}, year = {2020}, publisher = {Mansoura University, Faculty of Engineering}, issn = {1110-0923}, eissn = {2735-4202}, doi = {10.21608/bfemu.2020.118800}, abstract = {In this paper the electromagnetic transients in electrical power systems are described, analyzed, and investigated. The cable-based networks are the main concern of this investigation. Several transient phenomena are described theoretically and demonstrated by means of simulations performed both in simple and complex systems. The EMPT-ATP is used for the simulation. Some of the phenomena are very unlikely to occur and have an uncertainty associated with them, while others can be predicted with a high degree of certainty. Some depend only on the cable and equipment directly attached to it, while others depend on the cable and surrounding area. For all these reasons, one cannot immediately say which phenomena should be prioritized when performing an insulation co-ordination study. The application of the countermeasures depends on the phenomenon that must be minimized. However, some of the countermeasures intensify some phenomena while at the same time minimizing others. The energisation of cables in all its different variants; ideal energisation, energisation in weak grids, and energisation of cables in parallel are discussed. The energisation of a cable in a weak grid poses an interesting challenge, because of the high overvoltages associated to phenomenon. Another interesting analysis is the one make on the energization of cables in parallel. The de-energisation of a cable is another transient phenomenon that needs to be investigated.}, keywords = {}, url = {https://bfemu.journals.ekb.eg/article_118800.html}, eprint = {https://bfemu.journals.ekb.eg/article_118800_e2a7c88dcc5540815e9673de6dfd5d8b.pdf} }