Hedra_Mahfouz

Dr. Hedra Mahfouz Ibrahim Saleeb

مدرس - بقسم الكهرباء (القوى والآلات الكهربائية)

كلية التعليم الصناعى

العنوان: 5 - شارع عبد النور - جرجا - سوهاج

9

إعجاب
8 7 11 3 2 5 324 497
111

أضيف حديثا
  • المقررات الدراسية 8
  • ملحقات المقررات الدراسية 7
  • واجبات المقررات الدراسية 11
  • المنشورات و المؤلفات 3
  • ساعات مكتبية 2
  • الاعلانات 5
  • عدد الملفات المرفوعه 14
  • كل التنزيلات 114

المنشورات و المؤلفات التي تحتوي علي الكلمة المفتاحية: DC-DC converter

New high-frequency linked half-bridge softswitching PWM DC–DC converter with input DC rail side active edge resonant snubbers

2018-12-08 10:30:39 الكلمات المفتاحية Soft-Switching, DC-DC converter, High frequency;, arc welding,
New high-frequency linked half-bridge softswitching PWM DC–DC converter with input DC rail side active edge resonant snubbers
This study presents a new circuit topology of the active edge resonant snubber-assisted half-bridge softswitching PWM inverter-type DC–DC high-power converter for DC bus feeding power plants. The proposed DC–DC power converter is composed of a typical voltage source-fed half-bridge high-frequency PWM inverter with a high-frequency planar transformer link in addition to input DC busline side power semi-conductor switching devices for ... إقراء المزيد

Boost-Half Bridge Single Power Stage PWM DC-DC Converter for PEM-Fuel Cell Stack

2018-12-08 12:58:40 الكلمات المفتاحية DC-DC converter, Boost half-bridge, High frequency transformer, PEM Fuel cell, Voltage doubler-rectifier,
Boost-Half Bridge Single Power Stage PWM DC-DC Converter for PEM-Fuel Cell Stack
This paper presents the design of 1 kW prototype high frequency link boost half bridge inverter-fed DC-DC power converter with bridge voltage-doublers suitable for small scale PEM fuel cell system and its associated control scheme. The operation principle of this converter is described using fuel cell modeling and some operating waveforms and the switching mode equivalent circuits based on simulation ... إقراء المزيد

New High Voltage Gain Dual-boost DCDC Converter for Photovoltaic Power Systems

2018-12-08 13:06:39 الكلمات المفتاحية Dual Boost, DC-DC converter, PV system, High voltage gain,
New High Voltage Gain Dual-boost DCDC Converter for Photovoltaic Power Systems
This article presents a new circuit topology of a high-voltage step-up boost DC-DC converter for photovoltaic power systems. The converter boosts the low-output voltage of the solar cell to the required voltage for the load. The proposed circuit has various advantages compared to the conventional boost converters, namely a higher boost rate with low duty cycle, lower voltage stress on ... إقراء المزيد

A Novel Prototype of Duty Cycle Controlled Soft-Switching Half-Bridge DC-DC Converter with Input DC Rail Active Quasi Resonant Snubbers Assisted by High Frequency Planar Transformer

2018-12-08 14:52:09 الكلمات المفتاحية arc welding, Soft-Switching, DC-DC converter, high power,
A Novel Prototype of Duty Cycle Controlled Soft-Switching Half-Bridge DC-DC Converter with Input DC Rail Active Quasi Resonant Snubbers Assisted by High Frequency Planar Transformer
This paper presents a new circuit topology of active edge resonant snubbers assisted half-bridge soft switching PWM inverter type DC-DC high power converter for DC bus feeding power plants. The proposed DC-DC power converter is composed of a typical voltage source-fed half-bridge high frequency PWM inverter with a high frequency planar transformer link in addition to input DC busline side ... إقراء المزيد

A high-efficiency DC-DC converter with LC resonant in the load-side of HFT and voltage doubler for solar PV systems

2018-10-01 11:07:38 الكلمات المفتاحية DC-DC converter, phase-shift soft-switching, highfrequency transformer (HFT, voltage doubler rectifier, Solar PV applications,
A high-efficiency DC-DC converter with LC resonant in the load-side of HFT and voltage doubler for solar PV systems
This paper presents the implementation of a prototype phase-shift soft-switching full-bridge PWM DC-DC power converter isolated by a highfrequency transformer (HFT). This circuit topology is based on a new concept of series resonant principle in the secondary side. The step-up HFT and the voltage doubler rectifier make this circuit suitable for low-voltage renewable sources such as fuel cell or PV ... إقراء المزيد

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