"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, 30 de junho de 2013
sábado, 29 de junho de 2013
MATHEMATICAL MODELS OF ELECTRIC MACHINES – I. P. Kopylov
EXCELENTE LIBRO CLASICO RUSO DE MODELOS MATEMATICOS DE MAQUINAS ELECTRICAS EN INGLES,ES PERO QUE LO DISFRUTEN LOS AMANTES DE LA
INGENIERIA ELECTRICA E INGENIERIA ELECTRONICA.
LO ENCONTRE SURFANDO EN LAS ONDAS DE LA WEB EN LOS SIGUIENTES SITIOS
http://www.freelibros.com/electricidad/mathematical-models-of-electric-machines-i-p-kopylov.html
LO BAJAS EN ESTE ENLACE
http://depositfiles.org/files/kl48r1ytb
domingo, 23 de junho de 2013
LOS GRANDES PLAYERS DE UPS Uninterruptible Power Supply EN EL MUNDO
1)SCHNEIDER ELECTRIC COMPRO LA EMPRESA APC (AMERICAN POWER CONVERSION)EN EL 2007 Y LA MGE ( MERLIN GERIN)en el 2009 ,TAMBIEN COMPRO LA MICROSOL ( 2009 ) Y A CONTINUACION LA CP ELECTRONICA (2012).
SCHNEIDER ELECTRIC FUNDADA EN 1836 EN FRANCIA POR LOS HERMANOS EUGENE Y ADOLFO SCHNEIDER
MGE-MERLIN GERIN- FUNDADA EN 1920
APC- AMERICAN POWER CONVERSION- FUNDADA EN 1981
MICROSOL - FUNDADA EN 1982 SR. VALDELIRIO SOARES Y SR. BORGES- CEARA- BRASIL.
CP-ELECTRONICA - FUNDADA EN 1982 SR. CARLOS PORTO -RIO GRANDE DO SUL - BRASIL
2) EMERSON LA CUAL COMPRO LIEBERT EN 1987 Y CHLORIDE EN 2010
EMERSON FUNDADA EN 1980 EN ST. LOUIS MISSOURI USA POR JOHN WESLEY
EMERSON LIEBERT FUNDADA POR RALPH LIEBERT 1965
CHLORIDE FUNDADA EN 1981 LONDON UNITED KINGDOM
3) EATON QUE COMPRO LA POWERWARE EN 2004
EATON FUNDADADA EN 1911 POR JOSEPH EATON,OHIO,UNITED STATES,USA
POWERWARE FUNDADA EN 1888 COMO COMPAÑIA DE BATERIAS,EN 1962 SE CONVERTIRIA EN EXIDE ELECTRONICS
4) ABB ABB COMPRO LA NEWAVE 2012
ABB FUNDADA EN 1988 THROUGHT MERGER OF ASEA (1883) OF SWEDEN AND BROWN,BOVERI (1891) OF SWITZERLAND ABB COMPRO LA NEWAVE 2012
NEWAVE FUE FUNDADA EN 1993 SUIZA FABRICA UPS DESDE 5KVA HASTA 500KVA
PLAYERS MENORES MITSUBISHI ELECTRIC, SOCOMEC, RIELLO UPS, TOSHIBA, FUJI ELECTRIC, TRIP LITE.
sábado, 22 de junho de 2013
Elettronica di Potenza e Controllo - Lezione 11 - Controllori PID 1/2 CORSO DI LAUREA MAGISTRALE IN ING. ELETTRONICA UNIV. PISA
Lezioni del corso Elettronica di Potenza e Controllo, Corso di Laurea Magistrale in Ing. Elettronica, Univ. Pisa
Elettronica di Potenza e Controllo - Lezione 11 - Controllori PID 1/2 CORSO DI LAUREA MAGISTRALE IN ING. ELETTRONICA UNIV. PISA
Lezioni del corso Elettronica di Potenza e Controllo, Corso di Laurea Magistrale in Ing. Elettronica, Univ. Pisa
sexta-feira, 21 de junho de 2013
China Spacecraft 中国宇宙飞船 Chinese President Xi Jinping meets Shenzhou 10 crew
China 中国 宇宙飞船 nave espacial Shenzhou-10, o presidente chinês Xi Jinping se reúne Shenzhou 10 tripulação CCTV News CNTV Inglês
Launch of Manned Chinese Shenzhou-10 Spacecraft
Quinto vuelo espacial tripulado de China lanzó hoy, la Shenzhou-10, en una Gran Marcha 2F cohete. El despegue se produjo a las 09:38 UTC el 11 de junio de 2013 desde el Centro de Lanzamiento Satelital de Jiuquan. Shenzhou 10 se acercará y muelle con el Tiangong-1 Docking objetivo que se lanzó en septiembre de 2011. Ellos serán el último equipo para acoplarse a Tiangong-1 antes de que sea de su órbita, la Shenzhou-9 atracó de nuevo en junio de 2012.
La tripulación del Shenzhou 10 son comandante Nie Haisheng, Zhang Xiaoguang y segunda mujer astronauta chino Wang Yaping, que están programados para permanecer en órbita un poco más de dos semanas.
quarta-feira, 19 de junho de 2013
terça-feira, 18 de junho de 2013
Stanford Seminar - Joshua R. Smith of University of Washington
Publicado em 13/06/2013
"Wireless Power Transfer and RF Energy Harvesting: New Options for System Designers" -Joshua R. Smith, University of Washington
Colloquium on Computer Systems Seminar Series (EE380) presents the current research in design, implementation, analysis, and use of computer systems. Topics range from integrated circuits to operating systems and programming languages. It is free and open to the public, with new lectures each week.
domingo, 16 de junho de 2013
Power Quality Improvement of Single-Phase Grid-Connected Photovoltaic Inverter Chungnam National University SOUTH KOREA
Grid-Connected Photovoltaic Inverter
Department of Information and Communications Engineering
Graduate School Chungnam National University
By Trung-Kien Vu
Advisor Se-Jin Seong
Submitted to the Graduate School in Partial Fulfillment of the Requirements
for the Degree of Doctor of Philosophy
February 2011
Department of Information and Communications Engineering
Graduate School Chungnam National University
The economical and environmental impacts of fossil fuels have
forced society to investigate sustainable solutions. The interest has
focused on the renewable energy sources since the green and clean
benefits. Consequently, investments in research and development in the
field of power electronics have increased proportionally, especially in
high voltage and high power grid-connected systems.
The distributed power generation (DG) systems are becoming
more common as the need for electric power increases because of
taking advantage of using different energy sources such as wind and
solar. A few examples are hybrid cars, solar houses or hospitals in
remote areas where providing clean, efficient and reliable electric
power is critical to the loads. In such systems, the power is distributed
from the source side to the load side via power electronic converters in
the system. At low and medium power applications, the task is often
left to single-phase inverters where they are the only interface between
sources connected to dc bus and loads connected to an ac bus. This
dissertation investigates the power quality improvements to properly
regulate the power flow between renewable source and the utility
network.
FULL THESIS
http://www.mediafire.com/view/omt0iae8sei5msx/INVERTER-PHOTOVOLTAIC.pdf
sexta-feira, 14 de junho de 2013
terça-feira, 11 de junho de 2013
Non-isolated Single Phase Uninterruptible Power Supply (UPS) System Muhammad Aamir Advisor: Prof. Dr. Hee-Jun Kim Department of Electronics, Electrical, Control School of Engineering Hanyang University South Korea
MASTERS THESIS
Non-isolated Single Phase Uninterruptible Power
Supply (UPS) System
Advisor: Prof. Hee Jun Kim
This paper is presented as Master of Science Degree Thesis
August, 2011
Graduate School of Engineering,
Department of Electronics, Electrical, Control, and
Instrumentation Engineering
Hanyang University
Abstract
Non-isolated Single Phase Uninterruptible Power Supply (UPS)
System
Muhammad Aamir
Advisor: Prof. Dr. Hee-Jun Kim
Department of Electronics, Electrical, Control,
& Instrumentation Engineering
Graduate School of Engineering
Hanyang University
South Korea
In this thesis, a high performance single phase transformer-less online
uninterruptible power supply (UPS) is proposed. The use of the bidirectional
buck-boost converter with high conversion ratio not only reduces the number
of batteries but also ensures a transformer-less system. The rectifier has
capability of power factor correction and provides regulated DC link voltage
whereas the inverter provides a regulated sinusoidal output voltage to the
load. In order to control the transient effect, efficient control scheme is
adopted in the system. The overall efficiency of the system is improved with
significant reduction in size and weight of the system due to decrease
number of batteries. Qualitative analysis and experimental results obtained
with a 500VA prototype shows a normal efficiency of over 94% and an input
power factor of over 99%.
READ FULL THESIS
http://www.mediafire.com/?2cjcj2dbqcqatc4
3kW-class three-phase interleaved insulated Bi-directional DC-DC converter analysis and design
Interleaved DC-DC Converter
Taesub Kang
Department of Electrical Engineering,Graduate School
Chungnam National University Daejeon,Korea
(Supervised by Professor Hanju Cha)
This thesis presents an implementation of three-phase DC-DC
converter which converses the low input voltage level to a high
voltage level and is used in fuel-cell and battery applications.
For the purpose of highly efficient voltage conversion,two topologies
has been analyzed and implemented a basis of three-phase DC-DC converter.
Firstly,the PWM and operating principles has been explained for
three-phase current-type active clamp DC-DC converter,where all
switches are operated in ZVS operation because ofthe active clamp
circuit and leakage inductor of converter.Also,by using -back
method astable pre-charging can bee stablished even in case of the
load variation.By connecting two PI controllers in series,the output
voltage and the input current values has been maintained during the
load variation. In this thesis,a 800W three-phase current-fed active
clamp DC-DC converter propotype,which connects a fuel-cell with
an grid-connected inverter,has been implemented and verified in a
real three-phase grid-connected application.
Secondly,an interleaved method has been applied in to the existing
converter for implementing a three-phase interleaved bi-directional
DC-DC converter The three-phase full-bridge rectifier of the
interleaved DC-DC boost converter has been modified by using
IGBT's reverse-directional diode,hence the analysis and design of
bi-directionalconverter,which operates in two modes:boost mode
and buck mode operation,has been carried out.The PWM operation
and interleaved DC-DC converter has been explained.
All switches of three-phase interleaved bi-directional DC-DC
converter are worked in ZVS operation.As a result,the effect of
reducing converter's input current's ripple and ZVS operation of all
switches at1kW power is about 95%.1kW and 3kW converters were
directly designed and the converter's prototype such as PCB,input
and leakage inductor,transformer design process have been described.
Finally, the 3kW three-phase interleaved bi-directional DC-DC
converter has been verified in stable operation.In conclusion,this
converter has been verified to be suitable for high-power conversion
equipment in batterycharger/dis-charger,UPS and hybrid car.
FULL THESIS
http://www.mediafire.com/?6rabq63bg0t4b6b
segunda-feira, 10 de junho de 2013
domingo, 9 de junho de 2013
A FLYBACK CONVERTER OUTPUT COMPENSATION METHOD FOR IMPLANTABLE CARDIOVERTER DEFIBRILLATOR
ONE OF THE MOST EFFICIENT DEVICES FOR DEFIBRILLATION IS ICD (IMPLANTABLE
CARDIOVERTER DEFIBRILLATOR) IMPLANTED INSIDE A BODY,WICH DETECTS
FIBRILLATION AND DELIVERS ELECTRICAL ENERGY AUTOMATICALLY ,IF NECESSARY.
A STUDY ON HIGH POWER FACTOR FLYBACK CONVERT BY SOONJU KANG
DEPT. OF CONTROL AND INSTRUMENTATION ENG. CHANGWON NATIONAL UNIVERSITY
FULL PAPER HERE
http://www.mediafire.com/?563avp6y4di7c88
IMPROVEMENT ON ESTIMATION OF POWER SEMICONDUCTOR DEVICE USING PSIM SIMULATION KOREA UNIVERSITY
USING PSIM SIMULATION
TAE HWAN KANG
DEPARTAMENT OF ELECTRICAL ENGINEERING
GRADUATE SCHOOL KOREA UNIVERSITY
LINK FULL PAPER
http://www.mediafire.com/?5x7n6e95f3tn847
terça-feira, 4 de junho de 2013
segunda-feira, 3 de junho de 2013
domingo, 2 de junho de 2013
Стенд испытания трансформаторов (Automatic Transformer Test System)
El soporte proporciona una realización de los siguientes tipos de pruebas:
- Comprobación de la relación de transformación (GOST 3484.1);
- Compruebe la conexión de los bobinados (GOST 3484.1);
- Medición de la resistencia del devanado de corriente continua (GOST 3484.1);
- Medición de la corriente de pérdidas y sin carga (GOST 3484.1);
- Medida de las pérdidas y tensión de cortocircuito (GOST 3484.1);
- Medición de la resistencia de aislamiento de los devanados (GOST 3484.3);
- Rigidez dieléctrica tensión de prueba de frecuencia industrial (GOST 22756), incluyendo tensión de prueba admitido entre espiras de aislamiento;
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