Problemas de Electrotecnia y de Electrónica Industrial

Autor: V. Petrov – L. Shliapintoj
Gentileza de: Editorial MIR
LINK:
http://rapidshare.com/files/126633345/problemas_electrotecnia_electronica_industrial.zip

Автор: А. А. Фомин, Г. М. Кузнецова (сост.)
Название: Международные математические олимпиады
Издательство: Дрофа
Год: 1998
Формат: djvu
Размер: 2.33Мб
Autor: AA Fomin, GM Kuznetsova (comp.)
Título: Olimpiada Internacional de Matemáticas
Autor: Avutarda
Año: 1998
Formato: djvu
LINK1:
http://www.4shared.com/file/j7mLtArA/zadachi_olimp_world.html

DISEÑO ELECTRÒNICO DEL ROBOT 2 Ecole Nationale Supérieure des Sciences Appliquées et de Technologie UNIVERSIDAD NACIONAL MAYOR SAN MARCOS

VIDEOCONFERENCIA ROBOTS PERU FRANCIA Ecole Nationale Supérieure des Sciences Appliquées et de Technologie UNIVERSIDAD NACIONAL MAYOR DE SAN MARCOS

Vidéos de la visioconférence 2010

Par Christophe Huriaux.

Les vidéos de la visioconférence entre le club de robotique de l'ENSSAT et l'université San Marco de Lima au Pérou sont disponibles dans la vidéothèque !

Cette visioconférence a été réalisée l'an passé par Adrien Destugues (président du club de robotique de l'école en 2010) et Jorge Abraham Salgado Hervias, tous deux alors membres du club et du projet ENSSAT robotique. Elle présente de manière détaillée et technique le fonctionnement du robot présenté à la coupe de France 2010.

Attention, la visioconférence est intégralement en espagnol !

La Hora N con Jaime de Althaus. Entrevista a Modesto Montoya

Artigo elaborado por pesquisadores da UFPE e da UFCG recebe prêmio internacional

07.07.11 Artigo elaborado por pesquisadores da UFPE e da UFCG recebe prêmio internacional

O artigo "Eliminating Leakage Currents in Transformerless Z-source Inverters for Photovoltaic Systems", elaborado por grupo de pesquisadores do Departamento de Engenharia Elétrica da UFPE e do Departamento de Engenharia Elétrica da UFCG, recebeu o prêmio “The Best Paper Award” no International Symposium on Industrial Electronics (ISIE). O ISIE, organizado pela Industrial Electronics Society do Institute of Electrical and Electronic Engineers (IEEE), é um dos mais importantes fóruns de discussão sobre Eletrônica Industrial do mundo.

O trabalho foi desenvolvido por Fabrício Bradaschia (doutorando do Programa de Pós-Graduação em Engenharia Elétrica da UFPE), Marcelo Cabral (professor do Departamento de Engenharia Elétrica da UFPE), Pedro Ernesto (mestrando do Programa de Pós-Graduação em Engenharia Elétrica da UFPE), Euzeli Santos (professor do Departamento de Engenharia Elétrica da UFCG) e Francisco Neves (professor do Departamento de Engenharia Elétrica da UFPE).

Mais informações
Departamento de Engenharia Elétrica
Grupo de Eletrônica de Potência e Acionamentos Elétricos - GEPAE
Professor Francisco de Assis dos Santos Neves
(81) 2126.8984 / 8255
fneves@ufpe.br
FONTE:iSOBRAEP - Electronic Control System
Financial Control
FONTE:
http://www.ufpe.br/agencia/index.php?option=com_content&view=article&id=40722:artigo-elaborado-por-pesquisadores-da-ufpe-e-da-ufcg-recebe-premio-internacional&catid=209&Itemid=72

DEVELOPMENT OF METHODOLOGY OF SELF-OSCILLATING ELECTRONIC BALLAST DESIGN WITH UNIVERSAL INPUT

ABSTRACT
Master Thesis
Programa de Pós-Graduação em Engenharia Elétrica
Universidade Federal de Santa Maria
DESENVOLVIMENTO DE METODOLOGIA DO PROJETO
DO REATOR ELETRÔNICO AUTO-OSCILANTE
COM ENTRADA UNIVERSAL
DEVELOPMENT OF METHODOLOGY OF SELF-OSCILLATING
ELECTRONIC BALLAST DESIGN WITH
UNIVERSAL INPUT
AUTHOR: JULIANO DE PELEGRINI LOPES
ADVISOR: ÁLYSSON RANIERE SEIDEL
Place and date: Santa Maria, January 14th, 2010.
This work presents the design and analysis of an electronic system with universal
input to supply a fluorescent lamp. The system includes a self-oscillating electronic ballast
and an additional circuit which allows keeping the nominal lamp power although a variation
of the input voltage. The electronic ballast design comprises some steps: resonant filter
design, self-oscillating gate driver design, additional circuit design and stability test. The
electronic ballast is represented as a nonlinear control system in order to achieve a feasible
design methodology. Moreover, the system must be analyzed considering the describing
function method and the extended Nyquist stability criterion. The proposed electronic ballast
must maintain the main characteristics of the traditional self-oscillating electronic ballast.
Besides that, the additional circuit has a small number of components and it allows the input
voltage full range with automatic selection of the switching frequency. The design, simulation
and experimental results of the prototype are presented.
FULL THESIS:
http://www.ufsm.br/ppgee/docs/DISSERTACOES/2010/Juliano%20Lopes_PPGEE_Mestrado%202010.pdf

USING OF VARIABLE-OUTPUT-VOLTAGE HIGH PFC AC-DC CONVERTER FOR COMPACT FLUORESCENT INTEGRAL

FULL PAPER HERE:
http://caveromiranda.galeon.com/rvol16no2p14.pdf

USING OF VARIABLE-OUTPUT-VOLTAGE
HIGH PFC AC-DC CONVERTER FOR
COMPACT FLUORESCENT INTEGRAL
LAMPS FEEDING
Abstract – This article presents a design of a variable–
output-voltage high-power-factor-correction AC-DC
converter used for compact integral fluorescent lamps
feeding. Those lamps condition direct incandescent lamp
retrofitting with all the profits that the fluorescent
lighting offers. The main problems with the compact
integral fluorescent lamps sold in Brazil are the absence
of power factor correction (for input power below 60 W)
and the absence of filament pre-heating and input filter.
The proposed rectifier resolves these problems and offers
the dimming function.
Mikhail M. Polonskii was born in Stavropol, Russia, on 3 de October, 1956. He received the M.Sc. degree from the High Technical School named after Baumann of Moscow in 1978, and the Ph. D. degree from the State University of Technology (STANKIN), Moscow, in 1992. At present he is Adjunct Professor at Electrical Engineering Department of Universidade de Passo Fundo, Brazil. His research interests include Mechatronics, Engineering Education and Music Visualization.

PROJETO DE REATOR MULTIRESSONANTE PARA LÂMPADAS MULTIRESONANT BALLAST DESIGN FOR A T5 28W MODEL FLUORESCENT LAMP

Jacob Palis: The Importance of Science for Developing Countries - 1

JACOB PALIS JUNIOR
•Bacharel (Engenharia) - Universidade Federal do Rio de Janeiro, UFRJ - 1962.
•Mestre - Universidade da Califórnia, Berkeley - 1966.
•Ph.D. - Universidade da Califórnia, Berkeley - 1967.
•Pesquisador titular - Instituto de Matemática Pura e Aplicada, IMPA - 1968.
Doutor (Ciência) - Universidade de Warwick, Coventry - 2000.
•Ganhador do Prêmio Balzan 2010.
LECTURE IN the Abdus Salam International Centre for Theoretical Physics (ICTP)