"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”
domingo, 29 de setembro de 2013
sexta-feira, 27 de setembro de 2013
quinta-feira, 26 de setembro de 2013
THREE–PHASE REDUCED SWITCH TOPOLOGIES FOR AC–DC FRONT–END AND SINGLE–STAGE CONVERTERS by Dunisha Wijeratne
THREE–PHASE REDUCED SWITCH TOPOLOGIES
FOR AC–DC FRONT–END
AND SINGLE–STAGE CONVERTERS
(THESIS FORMAT: Monograph)
by
Dunisha Wijeratne
Graduate Program in Engineering Science
Department of Electrical and Computer Engineering
A Thesis Submitted in Partial Fulfillment
of the Requirements for the Degree of
Doctor of Philosophy
The School of Graduate and Postdoctoral Studies
The University of Western Ontario
London, Ontario, Canada
©Dunisha
Abstract
Conventional three-phase AC-DC converters have two converter stages. They have a
front-end converter that converts the input AC voltage into an intermediate DC bus voltage
and a second, back-end converter that converts this DC bus voltage into the desired isolated
DC output voltage. The front-end converter also performs power factor correction (PFC) and
shapes the three-phase input currents so that they are nearly sinusoidal and in phase with the
three-phase input voltages. This allows the AC power source to be used in the most efficient
manner.
DOWNLOAD FULL THESIS
http://ir.lib.uwo.ca/cgi/viewcontent.cgi?article=2725&context=etd
RETIFICADOR TRIFASICO BIDIRECIONAL COM ALTO FATOR DE POTÊNCIA APLICADO A EXCITACÂO DE GERADORES SINCRONOS Rodrigo de Souza Santos UNIVERSIDADE FEDERAL SANTA CATARINA
ALTO FATOR DE POTÊNCIA APLICADO A
EXCITACÃO DE GERADORES SINCRONOS
Rodrigo de Souza Santos
Dissertac~ao submetida ao Programa
de Pos-Graduac~ao em Engenharia Eletrica
da Universidade Federal de Santa
Catarina para a obtencão do Grau de
Mestre em Engenharia Eletrica.
Orientador: Prof. Ivo Barbi, Dr. Ing.
UNIVERSIDADE FEDERAL DE SANTA CATARINA
DEPARTAMENTO DE ENGENHARIA ELETRICA BRASIL
DOWNLOAD FULL THESIS
http://www.ivobarbi.com/PDF/dissertacoes/DissertacaoRodrigoSantos.pdf
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