“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

quarta-feira, 27 de fevereiro de 2013

Estudo e Implementação de Rectificadores com Consumo de Corrente Sinusoidal


Márcio Fernandes Soreano Louçano
Estudo e Implementação de Rectificadores
com Consumo de Corrente Sinusoidal
Tese de Mestrado
Mestrado Integrado em Engenharia Electrónica Industrial e
Computadores
Trabalho realizado sob a orientação do
Professor Doutor Manuel João Sepúlveda Mesquita
Universidade do Minho
Escola de Engenharia

terça-feira, 26 de fevereiro de 2013

Universidade do Minho Escola de Engenharia Christophe da Silva Fernandes Microgeradores Elétricos


Universidade do Minho
Escola de Engenharia

Christophe da Silva Fernandes
Microgeradores Elétricos

Dissertação de Mestrado
Ciclo de Estudos Integrados Conducentes ao Grau de Mestre
em Engenharia Eletrónica Industrial e Computadores
Trabalho efectuado sob a orientação do
Professor Doutor José Manuel Cabral
e co-orientação na empresa Critical Materials de
Engenheiro Nelson Ferreira
LINK TESIS:
http://www.mediafire.com/view/?o1gj1hg5580hm0v

Universidade do Minho Escola de Engenharia Rui Jorge Fernandes Araújo Desenvolvimento de uma Bicicleta Elétrica



Universidade do Minho
Escola de Engenharia
Rui Jorge Fernandes Araújo
Desenvolvimento de uma Bicicleta Elétrica
Tese de Mestrado
Ciclo de Estudos Integrados Conducentes ao Grau de
Mestre em Engenharia Eletrónica Industrial e de Computadores
Trabalho efetuado sob a orientação do
Professor Doutor João Luiz Afonso
LINK PARA FULL THESIS:
http://www.mediafire.com/view/?bm9whwam7k9dwm7

Delfim Anderson Baptista Pinto Implementação de uma UPS Offline Monofásica


Universidade do Minho
Escola de Engenharia

Delfim Anderson Baptista Pinto
Implementação de uma
UPS Offline Monofásica

Tese de Mestrado
Ciclo de Estudos Integrados Conducentes ao
Grau de Mestre em Engenharia Eletrónica Industrial e Computadores
Trabalho efectuado sob a orientação do
Professor Doutor Manuel João Sepúlveda Mesquita de
Freitas
Junho de 2012

segunda-feira, 25 de fevereiro de 2013

Gondim, F. P. “Wireless Power Transmission”, Universidade Federal do Ceará – UFC, 2010,FACULDADE ENGENHARIA ELETRICA




FELIPE PONTES GONDIM
TRA SMISSÃO DE EN ERGIA ELÉTRICA SEM FIO
Monografia apresentada para obtenção dos créditos da
disciplina Trabalho de Conclusão de Curso do Centro de
Tecnologia da Universidade Federal do Ceará, como
parte das exigências para graduação no curso de
Engenharia Elétrica.
Orientador: Prof. Dr. José Almeida do Nascimento.
Gondim, F. P. “Wireless Power Transmission”, Universidade Federal do Ceará – UFC, 2010,
42p.
This monograph presents an analysis of the resonant inductive coupling and how the two tesla
coils can be linked for the wireless energy transmission. The study was based on the electrical
circuit’s laws and the frequency domain response of a given system. The coupling coefficient
defines the energy transference between the primary and the secondary circuits. The
simulations made in the software PSpice attests the characteristics of all kinds of coupling:
critical, subcritical and supercritical coupling. The circuits simulated were designed after the
use of the frequency and impedance normalization theorem. Some methods for estimating the
inductance value of a solenoid were studied: Long solenoid model, Wheeler’s Formula and
Tapered Inductor. An experience of 11mW power transmission attested how the system
analyzed works, once that the comparison between experimental and theory results was
successfully done.
ESTA MONOGRAFIA FUE PRESENTADA POR EL DISTINGUIDO ESTUDIANTE
FELIPE FONTES GONDIM PARA GRADUARSE DE INGENIERO ELECTRICO ES UN TRABAJO QUE PUEDE SERVIR PARA TRABAJOS FUTUROS Y MAS COMPLEJOS DE
OTROS INGENIEROS DEL BRASIL Y DEL MUNDO.
LINK FULL THESIS:
http://www.mediafire.com/view/?uzumdz8eqnu79sp

domingo, 24 de fevereiro de 2013

New Book: Analog Design and Simulation Using OrCAD Capture and PSpice


New Book: Analog Design and Simulation Using OrCAD Capture and PSpice By Richard Goering on February 20, 2013Comments(0)Filed under: Industry Insights, Analog, OrCad, Analog Simulation, Convergence, Fitzpatrick, PSpice, OrCAD Capture, transmission lines, Capture, analog design, performance analysis, circuit simulation, Monte Carlo analysis, transient analysis, ac, PSpice models, dc, book review, PSpice book, dc analysis, stimulus editor, OrCAD book, ac analysis, noise analysis, analog behavioral models, parametric sweep Thousands of engineers worldwide use OrCAD Capture for PCB schematic entry and PSpice for circuit simulation. These popular products, both provided by Cadence, deserve a good "how to" book -- and now they have one. It's titled "Analog Design and Simulation Using OrCAD Capture and PSpice" and its author is Dennis Fitzpatrick (right), a former Cadence engineer who is now a lecturer at University of West London in England. I asked Fitzpatrick who he's targeting with this book. "This book is aimed at engineers, students and anyone else who has an interest in using simulation tools for the design of analog circuits," he replied. "The book can be used by novices and experts alike, with exercises at the end of each chapter to check on progress." He noted that the book details the integration of Capture with PSpice, and that many of the exercises can be completed using the free OrCAD PCB Designer Lite demo CD located here.
SOURCE : http://www.cadence.com/community/blogs/

segunda-feira, 18 de fevereiro de 2013

CPBR6 - Guerra de robôs

Boya.ca - El boom del hardware abierto desde Wiring y Arduino hasta Rasp...

CPBR4 - O PROGRAMA ESPACIAL BRASILEIRO

Enviado em 22/01/2011 As novidades das agências espaciais internacionais mais famosas costumam estar na ponta da língua dos fãs de astronomia. Mas e no Brasil? Que tal saber um pouco mais sobre o panorama do Programa Espacial Brasileiro? Pois a Campus Party traz os detalhes para você, e conta como funciona, quem participa, quais são os projetos em curso e qual o futuro desta iniciativa, além de tantas outras questões interessantes ligadas a esta área no país. Palestrante: Himilcon de Castro Carvalho -- Formado em Engenharia Eletrônica pelo ITA, é diretor de Políticas Espaciais e Investimentos Estratégicos da Agência Espacial Brasileira (AEB) e vice-presidente da Associação Aeroespacial Brasileira.

terça-feira, 12 de fevereiro de 2013

TOPOLOGICAL ISSUES IN SINGLE-PHASE POWER FACTOR CORRECTION Vlad Grigore


TOPOLOGICAL ISSUES IN SINGLE-PHASE
POWER FACTOR CORRECTION
Vlad Grigore
Dissertation for the degree of Doctor of Science in Technology to be presented with
due permission for public examination and debate in Auditorium S4 at Helsinki
University of Technology (Espoo, Finland) on the 30th of November, 2001, at 12
noon.
Helsinki
Helsinki University of Technology
Department of Electrical and Communications Engineering
The equipment connected to an electricity distribution network usually needs some kind of power
conditioning, typically rectification, which produces a nonsinusoidal line current due to the
nonlinear input characteristic. With the steadily increasing use of such equipment, line current
harmonics have become a significant problem. Their adverse effects on the power system are well
recognized. They include increased magnitudes of neutral currents in three-phase systems,
overheating in transformers and induction motors, as well as the degradation of system voltage
waveforms. Several international standards now exist, which limit the harmonic content due to line
currents of equipment connected to electricity distribution networks. As a result, there is the need
for a reduction in line current harmonics, or Power Factor Correction - PFC.

LINK FULL PAPER
http://www.mediafire.com/view/?uze0ux32zgq9xep

segunda-feira, 11 de fevereiro de 2013

INTERNATIONAL RECTIFIER Class D Audio Group Presentation by Manuel Rodriguez And Jun Honda




Agenda
-
Why Class D?
Product Offerings
Benefits
Roadmap
Key IC Features
DirectFET® Features
-
Single Side PCB with IRS2092DIP
FULL APRESENTAÇAO  AUDIO CLASE D
http://www.mediafire.com/view/?wwdc2aa1n2e4cig

單階功因修正線路 在發光二極體照明燈具應用之實現 THE IMPLEMENTATION OF SINGLE-STAGE PFC SCHEME FOR THE LED POWER LIGHT APPLICATION




單階功因修正線路
在發光二極體照明燈具應用之實現


THE IMPLEMENTATION OF SINGLE-STAGE PFC SCHEME
    FOR THE LED POWER LIGHT APPLICATION

研究生:鍾任富(Jen-Fu Chung)
指導教授:黃淑絹(Prof. Shu-Chuan Huang)

大同大學
電機工程研究所
    碩士論文
Thesis for Master of Science
Department of Electrical Engineering
Tatung University


ABSTRACT
This thesis mainly presents an implementation of a single-stage Power
Factor Correction (PFC) scheme for the low power LED light application.
As mater of fact, the circuit key idea is from the definition of power factor,
that is the input current must follow the voltage all the time. The PF value is
predicted and set properly by the proposed design equations and circuit
architecture. Detail operation principles, algorithms, and experimental results
are offered, and the experimental results based on 24V 700mA LED down
light prototype schematic are also provided. The final PF value reaches as
high as 0.980 which already satisfied the "ENERGY STAR": PF>0.9 for
commercial application. In addition, the current harmonics were passed in
IEC61000-3-2, too.

Index Terms: Boost Converter, Flyback converter, Single stage PFC.

domingo, 10 de fevereiro de 2013

Modern Transformerless Uninterruptable Power Supply (UPS) Systems brahim Güne 1, Bülent Üstüntepe2, and Ahmet M. Hava3 1,2 ENEL Energy Electronics Company, 34794 Istanbul TURKEY

Department of Electrical and Electronics Engineering, Middle East Technical University, Ankara, TURKEY
hava@metu.edu.tr

Abstract
Uninterruptable power supplies (UPS) are widely used to
supply critical loads and provide reliable and high quality
energy to the load. Until recently, on-line UPS systems with
isolation transformer have been widely employed. However,
transformerless modern UPS systems have been rapidly
replacing the old technology due to their superior
performance and size attributes. Transformerless UPS
systems have utility friendly input performance and high
quality output voltage waveform. Furthermore, smaller size,
higher efficiency, and increased reliability are features that
spread the transformerless products, rendering the
transformer technology obsolete. In this paper, modern
transformerless UPS systems with the 6-300kVA range will
be discussed and their experimental performance will be
illustrated. Input and output power quality performances,
energy efficiency performance, and size/weight information
will be provided on modern commercial transformerless
UPS products.
FULL PAPER
http://www.mediafire.com/view/?1qa4b97k4axl7u4



GLORIOSA PROMOCION XIX INGENIERIA ELECTRONICA UNIVERSIDAD NACIONAL MAYOR DE SAN MARCOS 1985 LIMA PERU

SALUDOS DESDE SAO PAULO A MI ALMA MATER UNIVERSIDAD NACIONAL MAYOR DE SAN MARCOS FACULTAD DE INGENIERIA ELECTRONICA 1985-LIMA -PERU
PADRINO ING. SEIICHI KARIYA

Development of a Power Factor Corrected High Current Supercapacitor Charger for a Surge Resistant UPS Zhang, Xu


Development of a Power Factor Corrected High Current Supercapacitor Charger for a Surge Resistant UPS

Date: 2012
Type: Thesis
Publisher: University of Waikato
Rights: All items in Research Commons are provided for private study and research purposes and are protected by copyright with all rights reserved unless otherwise indicated.

Abstract:

The Uninterrupted Power Supplies (UPSs) provide short term power back up to electrical loads when the mains power fail. Usually UPSs employ battery packs as the energy storage device. However the limitations of battery packs can affect the UPS performance.
As an alternative energy storage device, the supercapacitor (SC) technology is well developed over the past 30 years. Due to recent developments, single cell commercial supercapacitors are available up to about 5000 farads. Over the past 10 years, supercapacitor direct current (DC) voltage ratings have gradually increased to about 2.7 V/cell. New lithium based supercapacitor families have DC ratings up to 3.5 V/cell. For the high current applications, the supercapacitors have some advantages over batteries, which are the low effective series resistance (ESR), high power densities and high surge withstand capability.
This thesis is a continuation of the work begun by Kozhiparambil, P. K. on Surge Resistant Uninterrupted Power Supply (SRUPS). The reason for this continual research is due to identify weaknesses in original of SRUPS work with regard to the design of the charger. To reduce the components contain, also achieve common mode transient rejection capability, a flayback mode high current charger with power factor correction has been developed for charging the SC banks.
The prototype circuit includes multiple SC banks to transfer the energy from the 240 V, 50 Hz power line to the load maintaining high isolation level. The loads receive continuous and surge free power from the SC banks, and has electrical isolation from the main power line. An IGBT is used as a switch for the flyback charger, which has the advantage of high current capability.
The experimental results show the design was valid for the SRUPS and it demonstrated the capability to transfer the energy through a flyback charger with power factor correction.

Full-text options:

 

segunda-feira, 4 de fevereiro de 2013

Power Systems - Lecture #11 - Transformers in Power Systems Part 1

Power Systems - Lecture #18 - Distribution System, Loads and Power Quali...

Power Systems - Lecture #19 - Distribution System, Loads and Power Quali...

Power Systems - Lecture #33 - Protection of Power Systems Part 1

Power Systems - Lecture #34 - Protection of Power Systems Part 2

Power Electronics Book - Chapter 2 - Power Switches by Dr. Firuz Zare

Power Electronics Book - Chapter 3 - Diode Rectifiers - Part 2 by Dr. Fi...

Power Electronics Book - Chapter 3 - Diode Rectifiers - Part 1 by Dr. Fi...

Power Electronics: Module 28- Space-Vector Pulse-Width-Modulated (SV-PWM...

domingo, 3 de fevereiro de 2013

Orcad (lista de reprodução)

Orcad (lista de reprodução)

Emerotecos at RoboCup México Rescue B

Tesla - Power Transmitter - Wardenclyffe Tower - Basic Electronics 38

Free Energy step by step

INDUC 03 - The Induction Motor, Rotating Magnetic Field

MAQ01: Máquinas Eléctricas Lección 01a (Introducción)

Part A 3-phase Transformer from a Final Exam

PHASOR 10 - A basic Power System

(Español) ECT 002 - Carga, Corriente, Voltaje

EECE 373 - Final Exam. Question 1 (Single phase transformer)

PHASOR 04: First Tutorial on Phasors

PHASORS 14: Midterm Q3 Solution Jan 2011

Final Exam April 21 2011 question on Phasor Analysis

EECE 251 - Solution to the 3rd Quiz (Thevenin's)

Final Exam April 21 2011 question on Bode Plots

Bode Plot Example

Lecture - 11 Bode Plot ( contd.)

Lecture - 10 Frequency Response Bode Plot

Lecture - 12 Bode Plot ( contd.) - Poles & Zeros