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"OBRIGADO DEUS PELA VIDA,PELA MINHA FAMILIA,PELO TRABALHO,PELO PÃO DE CADA DIA,PROTEGENOS DO MAL"

"OBRIGADO DEUS PELA VIDA,PELA MINHA FAMILIA,PELO TRABALHO,PELO PÃO DE CADA DIA,PROTEGENOS  DO MAL"

“SE SEUS PROJETOS FOREM PARA UM ANO,SEMEIE O GRÂO.SE FOREM PARA DEZ ANOS,PLANTE UMA ÁRVORE.SE FOREM PARA CEM ANOS,EDUQUE O POVO.”

“Sixty years ago I knew everything; now I know nothing; education is a progressive discovery of our own ignorance. Will Durant”

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sábado, 24 de abril de 2010

The Analysis of Mixed Series and Parallel Snubbers to reduce Conducted EMI Emission on a Switching Converter





The Analysis of Mixed Series and Parallel Snubbers to reduce Conducted EMI Emission on a Switching Converter
C. U-Yaisom*, V.Tarateeraseth**, W. Khan-ngern***, S. Nitta**** *Faculty of Engineering Eastern Asia University Patumtanee, 12110, Thailand E-mail:yaisom@hotmail.com **Faculty of Engineering, Srinakharinwirot University, Ongkharak, Thailand E-mail: vuttipon@swu.ac.th ***Faculty of Engineering and Research Center for Communication and Information Technology King Mongkut Institute of Technology Ladkrabang, Bangkok, 10520, Thailand E-mail: kkveerac@kmitl.ac.th ****Graduate School, Production System Engineering Salesian Polytechnic, 2-35-11 Igusa Suginami, Tokyo, 167-0021, Japan E-mail: nitta@cc.tuat.ac.jp

The Comparison of Conducted Electromagnetic Interference Effect on High Frequency Transformer Winding Techniques





The Comparison of Conducted Electromagnetic Interference Effect on High Frequency Transformer Winding Techniques Tanathep Maneenopphon1, Vuttipon Tarateeraseth2, Werachet Khan-ngern1

Tanathep Maneenopphon1, Vuttipon Tarateeraseth2, Werachet Khan-ngern1 1Faculty of Engineering and EMC Laboratory, Research Center for Communications and Information Technology (ReCCIT) King Mongkut’s Institute of Technology Ladkrabang (KMITL), Bangkok, 10520, Thailand 2Faculty of Engineering, Srinakharinwirot University, Ongkharak, Thailand Phone/Fax: +662 737-3000 Ext. 3322, E-mail: tmn_ta@hotmail.com, vuttipon@swu.ac.th, kkveerac@kmitl.ac.th

REGULATION OF OUTPUT VOLTAGE IN BOOST POWER FACTOR CORRECTION CONVERTER WITH ELECTRO MAGNETIC







REGULATION OF OUTPUT VOLTAGE IN BOOST POWER FACTOR
CORRECTION CONVERTER WITH ELECTRO MAGNETIC
INTERFERENCE FILTER
P. RAM MOHAN
Assistant Professor, G. Pulla Reddy Engg. College, Kurnool, Andhra Pradesh, India
rammohan_cdp@yahoo.co.in
M. VIJAYA KUMAR
Professor, JNTU College of Engineering, Anantapur, Andhra Pradesh, India
O.V. RAGHAVA REDDY
Scientist, ISRO Satellite Center, Bangalore, Karnataka, India

quinta-feira, 22 de abril de 2010

Evaluation of Efficiency of Active Clamp Dual Flyback Inverter for Photovoltaic Systems using Simulation Method




Evaluation of Efficiency of Active Clamp Dual Flyback Inverter for Photovoltaic Systems using Simulation Method
R. Šul, B. Dobrucký
University of Zilina, Univerzitna 1, 010 21 Zilina, Slovak Republic, e-mails: sul@fel.uniza.sk, dobrucky@fel.uniza.sk
P. Čerňan
Clayton Power R&D, s.r.o, Legionarska 7158/5, SK911 01 Trencin, Slovak Republic, e-mail:
pc@claytonpower.com
Introduction
Dual flyback inverter (DFBI) is one of the preferred topologies for isolated low cost low power photovoltaic (PV) applications. It converts PV cells DC voltage to output AC voltage using single power stage. It is important to understand loss distribution of DFBI be able to reach efficiency limits of this topology. This paper evaluates the efficiency of DFBI based on computer simulation results worked-out by Simetrix circuit simulator.

Performance Investigation of Dynamic Characteristics of Power Semiconductor Diodes






Performance Investigation of Dynamic Characteristics of Power Semiconductor Diodes
P. Špánik, R. Šul, M. Frívaldský, P. Drgoňa, J. Kandráč
University of Zilina, Univerzitna 1, 010 26, Zilina, Slovakia,
e-mail: sul@fel.uniza.sk, frivaldsky@fel.uniza.sk, spanik@fel.uniza.sk, drgona@fel.uniza.sk
ELECTRONICS AND ELECTRICAL ENGINEERING
ISSN 1392 – 1215 2010. No. 3(99)
ELEKTRONIKA IR ELEKTROTECHNIKA