Sohag Engineering Journal最新文献_第4页

Active Clamp Soft-Switching PWM High-Frequency Inverter for Induction Heated Hot Water Producer 用于感应加热热水发生器的有源箝位软开关PWM高频逆变器

Sohag Engineering Journal Pub Date : 2022-03-01 DOI: 10.21608/sej.2022.117926.1007

Rasha Kassem, H. Saleeb, K. Sayed

{"title":"Active Clamp Soft-Switching PWM High-Frequency Inverter for Induction Heated Hot Water Producer","authors":"Rasha Kassem, H. Saleeb, K. Sayed","doi":"10.21608/sej.2022.117926.1007","DOIUrl":"https://doi.org/10.21608/sej.2022.117926.1007","url":null,"abstract":"This paper presents a new concept of stainless-steel eddy current-based electromagnetic induction screw type for heat exchanger or double pack heaters in hot water product, steam boiler and high heating evaporator, which is more suitable and acceptable to consumers of a new generation for energy applications. In addition, the active clamped edge-resonant highfrequency PWM inverter using trench-gate IGBTs power module can operate according to the zero-voltage soft-switching principle with PWM and has been developed and proven for high-efficiency hot water heating boiler and product in consumer power applications. The power device for consumer induction heater using active-clamp soft-switched PWM highfrequency inverter is evaluated and discussed based on simulation through PSIM and experimental results. To extend the operating ranges of zero-voltage soft-switching under a low-power setting as well as improve efficiency, a high-frequency pulse density modulation strategy for a high-frequency soft-switched inverter is demonstrated. The practical effectiveness of induction heating power supply has been greatly proven from the point of view of induction heating application. © 2022 Published by Faculty of Engineering – Sohag University. DOI: 10.21608/sej.2022.117926.1007","PeriodicalId":34550,"journal":{"name":"Sohag Engineering Journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48045153","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A 2 MW Wind Turbine Simulator for DFIG Wind Energy Generation Systems 用于DFIG风能发电系统的2MW风力涡轮机模拟器

Sohag Engineering Journal Pub Date : 2022-03-01 DOI: 10.21608/sej.2022.118133.1008

Ahmed G. Abo-Khalil, Heba El-zohri, K. Sayed

引用次数: 1

Comparative Study of the Egyptian Code for Reusing Treated Wastewater for Agriculture 埃及农业废水回用规范的比较研究

Sohag Engineering Journal Pub Date : 2022-02-05 DOI: 10.21608/sej.2022.115242.1006

Ahmed Khaled Abdella Ahmed, Moussa Shalaby, O. Negim, T. Abdel-Wahed

{"title":"Comparative Study of the Egyptian Code for Reusing Treated Wastewater for Agriculture","authors":"Ahmed Khaled Abdella Ahmed, Moussa Shalaby, O. Negim, T. Abdel-Wahed","doi":"10.21608/sej.2022.115242.1006","DOIUrl":"https://doi.org/10.21608/sej.2022.115242.1006","url":null,"abstract":"Egypt's limited water resources and rising water demand are critical to the country's economy and food security. This predicament encouraged the development of non-traditional water resources in order to bridge the gap between supply and demand for water. treated wastewater (TWW) reuse for irrigation is a viable alternative for closing this gap and conserving traditional water resources for residential and urban usage. TWW is a valuable source of nutrients in most wastewater treatment technologies, and it can improve the physicochemical properties of light-textured soils in the long run. Pathogens and the accumulation of harmful chemical substances, on the other hand, are the principal problems that can prevent TWW reuse in agriculture. This study compares Egyptian treated wastewater quality parameters for irrigation with those of other countries throughout the world, focusing on the environmental and health risks associated with the use of treated wastewater. Finally, the acceptable health parameters of treated wastewater for agricultural purposes were reviewed to preserve the health of the Egyptians. © 2022 Published by Faculty of Engineering – Sohag University. DOI: 10.21608/SEJ.2022.115242.1006","PeriodicalId":34550,"journal":{"name":"Sohag Engineering Journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41653761","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Design and Analysis of Planar Transformers in Modern Switching Mode Power Supply 现代开关电源中平面变压器的设计与分析

Sohag Engineering Journal Pub Date : 2021-09-01 DOI: 10.21608/sej.2021.94318.1003

I. Hassan, K. Sayed

{"title":"Design and Analysis of Planar Transformers in Modern Switching Mode Power Supply","authors":"I. Hassan, K. Sayed","doi":"10.21608/sej.2021.94318.1003","DOIUrl":"https://doi.org/10.21608/sej.2021.94318.1003","url":null,"abstract":"This paper presents a development and calculated rating of high-frequency transformer connect with switch-mode power supplies. These power supplies are used in various devices such as power personal communications services, television, DVD players and charge mobile phones Thus, increasing power density and decreasing cost are still the main factors in designing a switch-mode power supply. Magnetic elements represent a great amount of size in switch-mode power supplies and therefore volume reduction and power density raise are beneficial. These switch-mode power supplies consist of two power stages separated by a power transformer with high frequency power. The transformer architecture, which can run at a high frequency, has since become a major challenge for the engineers. Lower component height and better thermal management are advantages with the planar core design. This paper provides a detailed summary of the operating principles of high-frequency transformers. Two transformers are compared in a dual active bridge converter: a wire wound, a planar. This paper discusses a comparison between the wire-wound transformer, high-frequency transformer, and structures in terms of winding loss, core loss, leakage inductance, parasitic capacitance the focus of this research is to find an optimal transform solution for the converter operating at a power level of 220 W. Furthermore, the power losses of a planar transformer are estimated. © 2021 Published by Published by Faculty of Engineering – Sohag University. DOI: 10.21608/SEJ.2021.94318.1003","PeriodicalId":34550,"journal":{"name":"Sohag Engineering Journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49080662","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

A STEP TOWARD DEVELOPING RUBBERIZED CONCRETE TO BE USED IN RC DEEP BEAMS 开发钢筋混凝土深梁用橡胶混凝土的一步

Sohag Engineering Journal Pub Date : 2021-09-01 DOI: 10.21608/sej.2021.92961.1002

Ahmed Arafa, Nashwa Abdel Elghany, O. Farghal, A. Ahmed

{"title":"A STEP TOWARD DEVELOPING RUBBERIZED CONCRETE TO BE USED IN RC DEEP BEAMS","authors":"Ahmed Arafa, Nashwa Abdel Elghany, O. Farghal, A. Ahmed","doi":"10.21608/sej.2021.92961.1002","DOIUrl":"https://doi.org/10.21608/sej.2021.92961.1002","url":null,"abstract":"Using waste tire rubbers as a partial replacement of natural aggregates in conventional concrete materials can overcome many annoying environmental issues. In the literature, the experimental studies clearly revealed that the new concrete with rubber added have much lower compressive and tensile strength than the normal concrete as well as having a much better ductility and impact resistance. The studies mainly focused on small-scale specimens such as cubes, prisms and cylinders. There is a dearth in knowledge about the behavior of large-scale elements, especially such elements with brittle failure such as deep beams. The present study aimed at developing rubberized concrete with a minimal reduction in compressive, flexural and tensile strengths suitable for RC deep beams. Thirteen concrete mixtures were constructed: the first is a control normal concrete mixture and twelve other concrete mixtures with crumb rubber as a partial replacement of coarse aggregates. The parameters included the rubber replacement ratio (5%, 10%, 20%, and 30%), pre-treatment of rubber with NAOH and the use of silica fume powder as a partial replacement of cement. The results were analyzed considering the fresh and hardened concrete properties. It was shown that adding crumb rubber severely affected the concrete properties, but rubber pre-treatment while using silica fume noticeably controlled the reduction. Within the tested range of the rubber replacement ratio, it was found that the optimum ratio is 10% with an affordable 20% reduction in strength. This reduction is believed to be balanced by the safe disposal of waste tyres, the reduction in concrete density associated with the economic design and the concrete ductility.","PeriodicalId":34550,"journal":{"name":"Sohag Engineering Journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49656144","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Power Management and Control of Smart Microgrid Including Renewable Energy and Energy Storage Systems 包括可再生能源和储能系统在内的智能微电网的电源管理与控制

Sohag Engineering Journal Pub Date : 2021-09-01 DOI: 10.21608/sej.2021.92548.1004

K. Fathy, Mohamed Mourad

{"title":"Power Management and Control of Smart Microgrid Including Renewable Energy and Energy Storage Systems","authors":"K. Fathy, Mohamed Mourad","doi":"10.21608/sej.2021.92548.1004","DOIUrl":"https://doi.org/10.21608/sej.2021.92548.1004","url":null,"abstract":"Hybrid AC/DC microgrid is getting common nowadays as a result of increasing DC-compatible loads, renewable energy resources and energy storage systems. The hybrid AC/DC systems with AC and DC loads and energy sources are considered to be the structure of the future smart grids. Strategies of controlling the process of energy conversions and power management are considered from the most critical aspects. The suggested hybrid grid consists of AC loads and wind generator in the AC side and DC loads with energy storage elements and PV generator in the DC side. Bidirectional AC/DC converter is used to link between AC side and DC side to maintain balance and stability of the system under different generation and load conditions. In this paper we present an overview of power management strategy of hybrid AC/DC microgrid with energy storage elements. Control strategy and Maximum power point tracking for the bidirectional converter to maximize power harvesting are also presented. MATLAB/Simulink model for the hybrid microgrid is developed to verify that the proposed model can maintain balance of the system. © 2021 Published by Published by Faculty of Engineering – Sohag University. DOI: 10.21608/SEJ.2021.92548.1004","PeriodicalId":34550,"journal":{"name":"Sohag Engineering Journal","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41508099","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of zircon and aluminum dross on sinterability and properties Al-matrix composites 锆英石和铝渣对铝基复合材料烧结性能和性能的影响

Sohag Engineering Journal Pub Date : 2021-07-26 DOI: 10.21608/sej.2021.72590.1001

M. Zawrah, Ibrahim Hassab Allahb, M. Mohamed, Moataz H. Ata

引用次数: 0

Effect of hydroxyapatite nano rods on sinterability, hardness and bioactivity of Fe-14Mn-6Si alloy prepared by powder metallurgy 羟基磷灰石纳米棒对粉末冶金法制备Fe-14Mn-6Si合金烧结性能、硬度和生物活性的影响

Sohag Engineering Journal Pub Date : 2021-01-01 DOI: 10.21608/sej.2021.72585.1000

M. Zawrah, Ibrahim Hassab Allahb, Ayman Abdellah Awad, Moataz H. Ata

{"title":"Effect of hydroxyapatite nano rods on sinterability, hardness and bioactivity of Fe-14Mn-6Si alloy prepared by powder metallurgy","authors":"M. Zawrah, Ibrahim Hassab Allahb, Ayman Abdellah Awad, Moataz H. Ata","doi":"10.21608/sej.2021.72585.1000","DOIUrl":"https://doi.org/10.21608/sej.2021.72585.1000","url":null,"abstract":"Recently, there is a great of industrial interest on the production of biodegradable metal/ceramic composites. The casted FeMn-Si alloys prepared by casting tools have low biodegradable rate; so it is important to seek a method as powder metallurgy (PM) to prepare porous bodies with increased biodegradability. Moreover, the addition of hydroxyapatite (HA) nano rods to that alloy increases its bioactivity and forms composite with improved properties. In the present study, Fe-14Mn-6Si/HA composites were prepared by PM and sintered at different temperatures, i.e. 1100, 1150 and 1200C. Also, the effect of HA nano-rods content on the composite properties (physical properties, microstructure and micro hardness) and bioactivity were studied. The results revealed that bulk density increased with increasing sintering temperature up to 1150C; then decreased at 1200C. Also, the bulk density increased with increasing the HA content. Moreover, the hardness of the sintered composites increased with increasing sintering temperature and HA amount. The maximum hardness values were 1293 & 1792 MPa for the specimens which contain 8 % HA and sintered at 1150 and 1200C, respectively. The bioactivity of the prepared composites increased with increasing HA amount. The highest bioactivity was for the composite that contains 8 wt.% HA. © 2021 Published by Published by Faculty of Engineering – Sohag University. DOI: 10.21608/sej.2021.72585.1000","PeriodicalId":34550,"journal":{"name":"Sohag Engineering Journal","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68554472","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0