emadeldin_elzahri

عماد الدين حسين أحمد الزهري

مدرس - مدير مجمع التعليم التكنولوجي المتكامل بالفيوم

كلية التعليم الصناعى

العنوان: قسم الكهرباء - كلية التعليم الصناعي - جامعة سوهاج - سوهاج

9

إعجاب
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112

أضيف حديثا
  • المقررات الدراسية 7
  • ملحقات المقررات الدراسية 15
  • واجبات المقررات الدراسية 4
  • المنشورات و المؤلفات 11
  • ساعات مكتبية 1
  • الاعلانات 3
  • عدد الملفات المرفوعه 19
  • كل التنزيلات 1

Implementation of MPPT Algorithm for Single-Stage Grid-Connected Photovoltaic System Using Incremental Conductance Method

2018 | الكلمات المفتاحية Incremental Conductance, grid-connected, single-stage, MPPT, Photovoltaic,
Implementation of MPPT Algorithm for Single-Stage Grid-Connected Photovoltaic System Using Incremental Conductance Method
This paper presents simulation and implementation of maximum power point tracking algortim for single stage three-phase grid-connected PV system by using incremental conductance method.The maximum efficiency is realized when PV works at its maximum power point, which is contingent on irradiation and temperature. Since the irradiation and temperature always change with time, a PV system which is able to track ... إقراء المزيد

رسالة ماجستير قمت بالإشراف عليها

2018 | الكلمات المفتاحية تقنيات التحكم, المحرك الحثي, السيارات الكهربية,
رسالة ماجستير قمت بالإشراف عليها
تقنيات التحكم فى قيادة المحرك الحثى لمركبات كهربائية تعمل بالطاقة الشمسية خلال الفترة الأخير من القرن العشرين كانت هناك تغييرات تجعل السيارة الكهربائية أكثر جاذبية. أولاً ، هناك مخاوف متزايدة بشأن البيئة ، من حيث إجمالي انبعاثات ثاني أكسيد الكربون وكذلك الانبعاثات المحلية مثل العادم التي تساعد على جعل المدن المزدحمة غير مناسبة للعيش فيها. ثانياً ، حدثت تطورات في ... إقراء المزيد

A New Three Level ZCS Soft Switching Boost DC-DC Converter for Solar PV System

2016 | الكلمات المفتاحية Zero-current switching, Resonant switches, Three Level Boost Converter,
A New Three Level ZCS Soft Switching Boost DC-DC Converter for Solar PV System
This paper proposes a new zero-current switching (ZCS) technique for three-level boost DC/DC converter. This new technique eliminates the switching loss and dv/dt noise due to the discharging of MOSFET’s junction capacitances and the reverse recovery of diodes and enables the converters to operate at high frequencies. Consequently, the total turn-off switching losses can be significantly reduced and as a ... إقراء المزيد

Advanced protection schemes for DFIG based wind turbines during the grid faults

2016 | الكلمات المفتاحية Protection Schemes, DFIG, Wind Turbines, Wind Energy,
Advanced protection schemes for DFIG based wind turbines during the grid faults
Negative impacts of the grid faults in the Doubly Fed Induction Generators (DFIGs) based wind turbines systems include the stator and rotor over currents, DC-link over voltage, electromagnetic torque oscillations, active and reactive power fluctuations at the grid connection point, potentially leading to destabilization of the power system network. For eliminating of the negative impacts, thus enhances the DFIGs based ... إقراء المزيد

A new proposed dynamic arc model for flashover performance of a non-uniform polluted insulator string under HVAC stress

2015 | الكلمات المفتاحية Flashover mechanism, Dynamic arc model, Flashover voltage, Leakage current, HVAC stress,
A new proposed dynamic arc model for flashover performance of a non-uniform polluted insulator string under HVAC stress
This paper presents a new proposed dynamic arc model of a non-uniform polluted insulator under HVACstress taking into account the dynamic arc characteristics. The model is based on a hybrid formulation ofObenaus model and the mathematical development of arc equations by Rizk combined with the dynamicequations of the change in arc resistance by Mayr. The model adopts the criterion of ... إقراء المزيد

Control of EV charging station based on three-phase three-level AC/DC rectifier

2015 | الكلمات المفتاحية control of EV, charging station, three-phase three-level, AC/DC Rectifier,
Control of EV charging station based on three-phase three-level AC/DC rectifier
Recently, the Electric vehicles (EV) became more popular. The construction of the EV charging stations is important in order to satisfy the energy demand of large quantity of electric vehicles. This paper presents design and simulation of EV charging station using three-level converter in the grid-side as well as in the EV-side. The charging station architecture with an AC/DC conversion ... إقراء المزيد

Sizing of Hybrid PV/Battery Power System in Sohag city

2015 | الكلمات المفتاحية RETscreen, HOMER, Battery, PV, energy cost, Renewable energy source,
Sizing of Hybrid PV/Battery Power System in Sohag city
This paper gives the feasibility analysis of PV- Battery system for an off-grid power station in Sohag city. Hybrid PV-battery system was used for supplying a combined pumping and residential load. A simple cost effective method for sizing stand-alone PV hybrid systems was introduced. The aim of sizing hybrid system is to determine the cost effective PV configuration and to ... إقراء المزيد

Mathematical modeling of flashover mechanism due to deposition of fire-produced soot particles on suspension insulators of a HVTL

2013 | الكلمات المفتاحية Fire-induced-flashover, Soot deposition, Mathematical modeling,
Mathematical modeling of flashover mechanism due to deposition of fire-produced soot particles on suspension insulators of a HVTL
This paper presents a mathematical integrated model that simulates the coupled events causing flashover due to the deposition of soot particles on suspension insulators of high voltage transmission lines (HVTL). The model considers non-steady three-dimensional multi-phase flow of agricultural fire producing the soot particles. In addition, the model describes in detail the mechanism of the soot deposition combined with the ... إقراء المزيد

Mathematical modeling of agricultural fires beneath high voltage transmission lines

2011 | الكلمات المفتاحية Physical-based fire model, Agricultural fires modeling, Mathematical model,
Mathematical modeling of agricultural fires beneath high voltage transmission lines
This paper presents a mathematical model for agricultural fires based on a multi-phase formulation. The model includes dehydration and pyrolysis of agricultural fuel and pyrolysis products. The model considers a homogeneous distribution of the agricultural solid fuel particles, interacting with the gas flow via source terms. These terms include: drag forces, production of water vapour and pyrolysis products, radiative and ... إقراء المزيد

Supply power factor improvement with single-phase ac voltage converter

2003 | الكلمات المفتاحية modified phase-angle control, ac voltage converter, Power Factor Improvement,
Supply power factor improvement with single-phase ac voltage converter
In this paper a modified phase-angle control (PAC) technique is proposed. The proposed technique is applied for an ac voltage converter with reduced number of controlled switches. The performance evaluation of the converter has been illustrated as applied to a single-phase voltage regulator by an example of pure resistive and inductive loads to verify the feasibility of the proposed technique. ... إقراء المزيد