“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”

OBRIGADO DEUS PELA VIDA,PROTEGENOS E GUARDANOS DE TODO MAL


AUTOR DO BLOG ENG. ARMANDO CAVERO MIRANDA SAO PAULO BRASIL

sexta-feira, 30 de novembro de 2012

PERUVIAN ELECTRIC ENGINEERS IN BRAZIL



MARCOS J. RIDER FLORES was born in Lima, Peru; in 1975. He received his BSc (with honors) and the Professional Engineer (PE) degrees in 1999 and 2000, respectively, from National University of Engineering ( UNI), Faculty of Electrical and Electronics Engineering ( FIEE), Lima, Peru; his MSc degree in 2002 from the Federal University of the Maranhao ( UFMA), Brazil, and his PhD degree in 2006 from University of Campinas ( UNICAMP), Brazil, all in electrical engineering. Currently he is carrying out post doctorate at the State University of Campinas, Brazil. His professional experience include several research projects, international consultings and technical papers publications. His areas of research are the development of methodologies for the optimization, planning and control of electrical power systems and applications of artificial intelligence in power systems. He is Member of the Institute of Electrical and Electronics Engineers (IEEE).


 Rubén Augusto Romero Lázaro

Universidade Estadual Paulista (UNESP). Campus de Ilha Solteira. Faculdade de Engenharia (Instituição sede da última proposta de pesquisa)
País de origem: PERU
 Possui graduação em Ingenieria Eléctrica - Universidad Nacional de Ingenieria (1978), mestrado em Engenharia Elétrica pela Universidade Estadual de Campinas (1990) e doutorado em Engenharia Elétrica pela Universidade Estadual de Campinas (1993). Faz trabalhos de pesquisa na área de Engenharia Elétrica, com ênfase em otimização da operação e o planejamento de sistemas de transmissão e distribuição de energia elétrica com destaque nos temas: planejamento de sistemas de transmissão, otimização de sistemas de distribuição, programação linear e não linear, programação inteira, fluxo de carga radial, alocação ótima de bancos de capacitores, reconfiguração de alimentadores em sistemas de distribuição de energia elétrica e teoria e aplicação de metaheurísticas. Em março de 2012 apresenta 38 artigos em periódicos internacionais indexados pelo ISI (33 deles tipo IEEE ou IEE). Também apresenta 912 citações pelo ISI e um fator de impacto H igual a 18. Atualmente é pesquisador 1B do CNPq e Senior Member do IEEE. (Fonte: Currículo Lattes)

domingo, 25 de novembro de 2012

RISAT-1 Satellite launched using India's Polar Satellite Launch Vehicle [PSLV-C19 mission]

RISAT-1 is a Radar Imaging Satellite designed & built by the Indian Space Research Organisation [ISRO]. The satellite gives its operator [India] the capability to carry out surveillance under all conditions - day, night & also cloudy. Besides carrying out activities that have socio-economic benefits, the satellite can also be put to use to conduct missions having relevance to National security. The satellite was successfully launched on April 26, 2012 using India's Polar Satellite Launch Vehicle [PSLV]. This launch makes it PSLV's 20th consecutive launch success.

Megha-Tropiques satellite launch using India's Polar Satellite Launch Vehicle [PSLV C-18]


 Megha-Tropiques satellite has been jointly developed & built by the India Space Research Organisation [ISRO] & the French Centre National d'Études Spatiales to study rainfall, in general, & water cycle, in particular.

The other piggyback satellite payloads that were also successfully launched in this mission included Vesselsat-1, SRMSat & Jugnu

The launch took place at 1100 hrs IST from the Shriharikota Spaceport in India on October 12 2011 using India's indigenous satellite launcher, the Polar Satellite Launch Vehicle [PSLV C-18].

Centre National d'Études Spatiales [CNES]

http://www.cnes.fr/web/CNES-en/7114-home-cnes.php
http://en.wikipedia.org/wiki/CNES

Indian Space Research Organisation [ISRO]
http://www.isro.org/
http://en.wikipedia.org/wiki/ISRO

IIT JEE 2012 Physics solution, JEE 2013 syllabus, IIT JEE online coachin...

sexta-feira, 23 de novembro de 2012

ANALISE DO SISTEMA ELETRICO DE UMA UNIDADE DE PRODUÇÃO DE PETROLEO

ANALISE DO SISTEMA ELETRICO DE UMA UNIDADE DE PRODUÇÃO DE PETROLEO RENATA ALVES CASANOVA WAGNER GUEDES GUIMARAES PEREIRA PROJETO SUBMETIDO AO CORPO DOCENTE DO DEPARTAMENTO DE ENGENHARIA ELETRICA DA ESCOLA POLITECNICA DA UNIVERSIDADE FEDERAL DE RIO DE JANEIRO COMO PARTE DOS REQUISITOS NECESSARIOS PARA OBTENÇÃO DO GRAU DE ENGENHEIRO
ELETRICISTA

                              

 LINK
http://www.mediafire.com/view/?6tq2tfgt31kkjf2

domingo, 18 de novembro de 2012

Qualificação e etiquetagem de inversores para sistemas fotovoltaicos conectados à rede PARTE II

TESIS QUALIFICAÇAO E ETIQUETAGEM DE INVERSORES PARA SISTEMAS FOTOVOLTAICOS CONETADOS A REDE PARTE-II from armando cavero on Vimeo.

Qualifying and Labeling of Inverters for Grid-Connected Photovoltaic Systems - Qualificação e etiquetagem de inversores para sistemas fotovoltaicos conectados à rede PARTE I


TESIS QUALIFICAÇAO E ETIQUETAGEM DE INVERSORES PARA SISTEMAS FOTOVOLTAICOS CONETADOS A REDE PARTE-I from armando cavero on Vimeo. Dissertação de Mestrado Autor Pinto Neto, Aime Fleury de Carvalho (Catálogo USP)
Nome completo Aime Fleury de Carvalho Pinto Neto
 Unidade da USP Energia Área do Conhecimento Energia Data de Defesa 2012-05-30 Imprenta São Paulo,2012
Orientador Zilles, Roberto (Catálogo USP) Banca examinadora Zilles, Roberto (Presidente) Pinho, João Tavares Rüther, Ricardo
Título em português Qualificação e etiquetagem de inversores para sistemas fotovoltaicos conectados à rede Resumo em português
Este trabalho apresenta o desenvolvimento de uma metodologia para a etiquetagem e qualificação de inversores para Sistemas Fotovoltaicos Conectados à Rede, com finalidade de servir de proposta de procedimento para inclusão no Regulamento de Avaliação de Conformidade de Equipamentos e Sistemas Fotovoltaicos do Programa Brasileiro de Etiquetagem. O procedimento desenvolvido avalia os inversores quanto à eficiência, qualidade de energia, proteções e informações operacionais e de instalação.
ESTA TESIS ESTA DIVIDIDO EM 02 PARTES This work presents the development of a methodology for qualification and labeling of inverters for grid-connected photovoltaic systems, aiming serving as procedural proposal for inclusion in the Conformity Assessment Rules of Equipments and Photovoltaic Systems of the Brazilian Labeling Program. The developed procedure evaluates the inverters efficiency, power quality, protections and operational and installation information.
 LINK THESIS FULL
http://www.teses.usp.br/teses/disponiveis/86/86131/tde-28062012-174659/publico/Dissertacao.pdf

terça-feira, 6 de novembro de 2012

具柔性切換單元之脈寬調變轉換器 推演與應用 Development and Application of PWM Converters with Soft-Switching Cells

Development and Application of PWM Converters with
    Soft-Switching Cells

研 究 生:洪金泉    Student:   Jin-Chyuan Hung
指導教授:吳財福 博士    Advisor:   Tsai-Fu Wu, Ph. D.


國立中正大學工學院 電機工程研究所
    博士論文

A Dissertation Submitted to Institute of Electrical Engineering
 College of Engineering National Chung Cheng University
in Partial Fulfillment of the Requirements for the Degree of
Doctor of Philosophy  in Electrical Engineering
    January 2005
Chiayi, Taiwan, Republic of China

ABSTRACT
Due to their simplicity and low steady-state component stress, pulse width modulated
(PWM) converters are broadly used in various power-conversion applications. However, they
have some drawbacks, such as high stress and high loss at switching transition, which will
limit their operation at high frequency. Soft-switching methods are thus used to reduce the
stress and loss.
A family of soft-switching cells (SSCs) for non-isolated and isolated PWM converters is introduced. These cells are derived from the quasi-square-wave converters (QSWCs), in which zero-voltage switching is an inherent feature. A selected SSC and a hard-switching PWM converter are combined by the synthesis process achieving that the PWM converter maintains the power process while the SSC performs the active-clamp function. The PWM converter with the SSC, clamping action and soft-switching feature in both main and auxiliary switches can be achieved. In this dissertation, synthesis process is proposed to unify some of the published soft-switching PWM converters. Based on the proposed synthesis process, families of new converter topologies can be systematically generated.
By introducing SSCs to the conventional single-stage power factor corrector (PFCs), the soft-switching features can be achieved and the energy trapped in the leakage inductor can be also recovered. For reducing input current ripple, two interleaving methods are proposed. Additionally, input power factor and total harmonics distortion of the PFCs with SSCs can be further improved by using an asymmetrical PWM manner.
By introducing SSCs to the coupled-inductor converters and push-pull converters, the
soft-switching features can be achieved and the energy trapped in leakage inductor can be also
recovered. Experimental results have shown that surge voltage can be suppressed effectively.
With the coupled inductors, active switches in the converters can sustain proper duty cycles
while operated with high step-up and/or high step-down voltage ratio, reducing component
stress significantly. Thus, the conversion efficiency of the converters is improved significantly.
In the push-pull converter, SSCs are used to eliminate potential flux imbalance existing in the
conventional push-pull converter which makes the converter more viable. In addition, all of

the proposed converters can be regulated with an asymmetrical PWM control, reducing cost and complexity.
Finally, based on the operational principles, detailed analysis, design procedures,
implementations and discussions of soft-switching PWM converters are presented. The
measured results have verified the feasibility of the discussed soft-switching converters.
LINK
http://www.mediafire.com/view/?lhjl4hr44grhtnj

IMPLEMENTATION OF THREE-PHASE FED DC POWER SUPPLY SYSTEM WITH HIGH POWER FACTOR CHUNG YUAN CHRISTIAN UNIVERSITY


In this thesis, a high efficiency power supply system with high
power factor is proposed for high power applications. The studied power
supply system consists with a three-phase three-switch power factor
corrector (PFC) and a phase-shifted zero-voltage-transition full-bridge
DC/DC converter with current doubler rectification. High power factor
input can be achieved by the adopted PFC circuit with a simple
configuration. The phase-shifted operation of the full-bridge DC/DC
converter provides the zero-voltage-switching (ZVS) features for the
bridge switches to reduce the switching losses effectively. The current doubler rectification reduces significantly the secondary rectification losses. Therefore, high efficiency can be also accomplished. The detailed operating principle and design consideration of this power supply system are analyzed and described. A 1.1kW 55V/20A laboratory prototype was implemented  and  tested.  The  experimental  waveforms  verify  the feasibility of the proposed design. The implemented power supply system exhibits optimum performances such as high power factor, high efficiency, simple configuration and high reliability. 

LINK THESIS
http://www.mediafire.com/view/?sf7319xgbi4q0o9 


segunda-feira, 5 de novembro de 2012

Automatic Test System for Type Tests of the Uninterruptible Power Supply

 Aalto university school of electrical engineering HELSINKI FINLAND
 Abstract of the master's thesis
 Author: Esa Nummijoki Title: Automatic Test System for Type Tests of the Uninterruptible Power  Supply Date: 27.3.2012 Language: English
 Number of pages:10+59 Department of Electrical Engineering Professorship: Industrial Electronics Code: S-81
 Supervisor: Prof. Seppo J. Ovaska Instructor: M.Sc. (Tech.) Risto Karola
Testing is an essential part of product development. In UPS product development, di erent tests are made every day. Testing requires large variety of measurement instruments and other equipment such as large load systems and di erent kind of test con gurations. Signi cant number of performed tests are based on the UPS type tests de ned in the IEC-62040 standard. Testing consumes a lot of time and that way also resources. To solve this problem, an automatic test system for type tests is considered. The aim of this thesis was to clarify the need for the automatic test system, and clarify requirements needed to realize it. The work was done by reviewing the type tests and di erent parts of an automatic test system. In addition, an experimentation was made, resulting a prototype. The prototype is able to automatically perform an indicative e ciency test for the UPS. Furthermore, a possibility to automate the most complex type test, a dynamic output performance test, was examined. This examination resulted a description of the test process and LabVIEW programs, supporting the execution of the test. However, the conclusion was that it is not sensible to automate the test, due to the fact that it is not often performed and automating the test requires a lot of time and resources. The review and the experimentation proved that realization of an automatic test system, able to perform all the type tests, requires large amount of time and resources. Due to this, the automatic test system for type tests is not the best solution to reduce the time and resources consumed by testing.
LINK FULL THESIS
http://www.mediafire.com/view/?g4pagyhlpoeqwh5

Super Course in Physics for the IIT-JEE: Electricity and Magnetism By Trishna Knowledge Systems

domingo, 4 de novembro de 2012

Space Vector PWM Control for 3kW Brushless Motor Driver Design and Application for Novel Parallel Hybrid Electric Vehicles

ABSTRACT
In recent years, owing to the environmental protection concept has risen and
global warming, it is important to reduce the environmental pollution. If the merits
of both internal combustion engine and permanent magnet synchronous motor
(PMSM)  can be integrated to become a hybrid electric  vehicle, it must have
ultra-low pollution and energy-saving but still keeping high performance.
For this reason, the central purpose of this thesis is to develop a novel parallel
hybrid  electric  vehicle  system  driver  and  controller.  Electronic motor  control
systems used by extremely versatile digital signal processor (DSP). The important
space vector pulse-width-modulation (SVPWM) technology is applied to the PMSM
control to provide more efficiency of the hybrid electric vehicle. The SVPWM
technology is also guarantees the system to be stable with better performance.
Subsequently, by way of experiment results have proved the SVPWM technology
provides more and more performance of the PMSM and the SVPWM technology
have been applied in hybrid electric vehicle with high efficiency.
Finally, a prototype of the hybrid electric heavy-duty motorcycle has been
established  and  it  has  been  exhibit  on  the “Taipei  international  automobile
electronics show” at the Taipei world trade center in 2007.
LINK
http://www.mediafire.com/view/?49glo7f3rm3rzij

sexta-feira, 2 de novembro de 2012

Guia de carreiras: engenharia elétrica

FONTE ORIGINAL
http://g1.globo.com/educacao/guia-de-carreiras/noticia/2012/08/guia-de-carreiras-engenharia-eletrica.html

Muito se fala do aumento da demanda por engenheiros civis no Brasil, mas as grandes obras de infra-estrutura, impulsionadas pelo crescimento econômico e os grandes eventos esportivos mundiais que o país vai hospedar nos próximos anos, também têm aquecido o mercado de outras engenharias, entre elas a elétrica. "Quando você tem metrô expandindo, estádios de futebol, trens, aeroportos, você precisa ter um sistema de energia elétrica para
atender tudo isso", explicou Fábio Bergamini Tangerino, de 32 anos.

Formado em engenharia elétrica pela Universidade Federal de Itajubá (Unifei), Tangerino atualmente trabalha como supervisor de engenharia na Alstom Grid, em um projeto de energia hidrelétrica do Rio Madeira, na Região Norte do país.

Segundo ele, o engenheiro eletricista é o profissional responsável pela construção e manutenção de sistemas de geração, transmissão e distribuição de energia elétrica. Sua atuação acontece principamente em empresas e indústrias que fabricam ou usam equipamentos elétricos e sistemas de automação. Alguns exemplos incluem grandes construtoras, fabricantes de sistemas elétricos e aparelhos eletrônicos, além das empresas que prestam serviço de telecomunicações ou possuem linhas de montagem.

Atualmente há muita demanda por engenheiros que trabalham com subestações, linhas de transmissão e sistemas de automação e controle. "Não tem muitos profissionais qualificados no mercado e todas as empresas do setor encontram dificuldade para encontrar", diz Tangerino.


quinta-feira, 1 de novembro de 2012

AeroDesign SAE BRASIL - Making off

PROJETO SAE AERODESIGN O projeto SAE AeroDesign é um desafio lançado aos estudantes de Engenharia que tem como principal objetivo propiciar a difusão e o intercâmbio de técnicas e conhecimentos de Engenharia Aeronáutica entre estudantes e futuros profissionais da engenharia da mobilidade, através de aplicações práticas e da competição entre equipes. Ao participar do projeto SAE AeroDesign o aluno se envolve com um caso real de desenvolvimento de projeto aeronáutico, desde sua a concepção, projeto detalhado, construção e testes. No Brasil o projeto recebe o nome de Competição SAE BRASIL AeroDesign.