نتایج جستجو برای: منبع تغذیه high voltage

تعداد نتایج: 2168251  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی امیرکبیر(پلی تکنیک تهران) - دانشکده مهندسی برق 1387

شبکه های گسترده ی خطوط انتقال گاز طبیعی و لزوم تقلیل فشار از سطح انتقال به سطح توزیع در مبادی وردی شهرها، منجر به استفاده از فشار شکن های مکانیکی شده است. این کار، انرژی نهفته در گاز فشار بالا را هدر می دهد. با توجه به اهمیت روزافزون استفاده بهینه از انرژی اتلافی در فرایندهای مختلف، لزوم بازیابی این منبع انرژی عظیم احساس می شود. توربین های انبساطی، انبساط گرهای چرخانی هستند که ضمن کاهش فشار گاز...

Journal: :Marine Engineering 2013

Journal: :Journal of the Franklin Institute 1913

ژورنال: :international journal of electrical and electronics engineering 0
hassan faraji baghtash ahmad ayatollahiii khalil monfaredi

a novel ultra-high compliance, low power, very accurate and high output impedance current output stage (cos) with extremely high output current drive capability is proposed in this paper. the principle of operation of this unique structure is discussed, its most important formulas are derived and its outstanding performance is verified by hspice simulation in tsmc 0.18µm cmos, bsim3, and level4...

Journal: :Nature Energy 2019

This paper presents the analysin ,design and implementation of a high voltage ratio topology of DC-DC converter. The DC-DC converter has high voltage ratio with reduced input current, output voltage and output current ripple, and also reduces the voltage and current rating of power electronics components and compared with conventional boost converter. The voltage stress on the switches are  red...

Journal: :the modares journal of electrical engineering 2011
mona ghassemi hossin mohseni kaveh niayesh amir abbas shayegani akmal

although in recent two decades, the concept of dielectric barrier discharges (dbds) have been developed in ozone production well, air pollution control, plasma screens and control of chemical, and biological and medical processes, employment of this concept for high voltage applications to improve insulation performance as an alternative to the pressurized gas-insulated systems (gis) utilizing ...

Journal: :بین المللی مهندسی صنایع و مدیریت تولید 0
robab hatami m.sc. graduate, industrial engineering department, isfahan university of technology ali zeinal hamadani associate professor,industrial engineering department, isfahan university of technology hamid reza karshenas assistant professor, department of electrical and computer engineering, isfahan university of technology mohammad hosein rohani m.sc. graduate, isfahan regional electric company

electric power industry have always try to provide reliable electricity to customers and at the same time decrease system costs. high voltage circuit-breakers are an essential part of the power network. this study has developed a maintenance and replacement scheduling model for high voltage circuit- breakers that minimize maintenance costs while maintaining the acceptable reliability. this mode...

Journal: :IOSR Journal of Electrical and Electronics Engineering 2012

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