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“TEMOS O DESTINO QUE MERECEMOS.
O NOSSO DESTINO ESTA DE
ACORDO COM OS NOSSOS MERITOS”
ALBERT EINSTEIN.
Imagination is more important than knowledge, for knowledge is limited while imagination embraces the entire world.
EL FUTURO SE CONSTRUYE HOY,EL SUCESSO NO ES FRUTO DE LA CASUALIDAD,SE HUMILDE ,APRENDE SIEMPRE CADA DIA.
AUTOR DO BLOG ENG.ARMANDO CAVERO MIRANDA SÃO PAULO BRASIL
“GRAÇAS A DEUS PELA VIDA,PELA MINHA FAMÍLIA,PELO TRABALHO.PELO PÃO DE CADA DIA,POR NOS PROTEGER 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”
MARCA SU-KAM
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A Study on the Design and Evaluation of High Power Induction Lamp System Young-il Chung Dept. Information and Communication Engineering Graduate school Wonkwang University
Abstract
Currently, road lightings are installed with less than 400W of existing
metal halide lamps. These road lightings are being replaced by
energy-saving lightings.
Induction lamps are expected to be more actively replaced with
targets for tunnel lighting and high ceiling lighting.
Therefore, it is necessary to develop high efficiency, high power
induction lamps system.
In this study, the discharge tube design, lmap gas, lighting circuit, and
lighting fixture were designed for the high power of the induction
lamps. And Induction lamp system was optimized through electrical,
optical, thermal characteristics analysis and simulation.
For the development of the high power induction lamp, the induction
lamp was fabricated according to the design factors such as gas type,
gas pressure, discharge tube, ferrite core size, amalgam, and driving
frequency after the improvement of the existing process.
In addition, the design and manufacture of the lighting circuit for the
high power induction lamp were carried out.
The light distribution characteristics through the optical design of the
lighting fixture were compared and analyzed, and the illuminance
distribution characteristics were simulated to develop the optimized
high power induction lamp system.
The discharge tube size of the high power induction lamp was 62mm,
and the gas was optimized to Kr 100% and gas pressure 300 ~
350[mmHg].
When the indium amalgam was applied, the induction lamp maintained
the same power. As a result, optimization of the induction lamp,
lighting circuit, and lighting fixture was completed in accordance with
the rating.
The characteristic analysis through the design of the lighting circuit
for the induction lamp proceeded to improve and supplement.
Based on the optical characteristics of the induction lamp and the
system effect according to the driving frequency of the lighting circuit,
the driving frequency was optimized to 135kHz.
An optical simulation was performed according to the distance
between the lamp and the reflector by using the OptisWorks program.
and illuminance simulation was performed for each height according to
the light distribution by using the Relux program.
As a result, the high power induction lamp high ceiling fixture was
completed.
In conclusion, Based on the high power induction lamp, ligthing circuit,
lighting fixture optimization study was to present a guide for design
and evaluation of induction lamp system.
It is expected to be applied to additional induction lamp research and
development in future.
Analysis and Multi-Objective
Optimization of Multi-Cell DC/DC
and AC/DC Converter Systems
A thesis submitted to attain the degree of
DOCTOR OF SCIENCES of ETH ZURICH
presented by
MATTHIAS JOACHIM KASPER-2016 ETH Zurich Power Electronic Systems Laboratory Physikstrasse 3 j ETL I14 8092 Zurich j Switzerland http://www.pes.ee.ethz.ch
Abstract
One of the key enabling technologies behind many global megatrends,
which are a ecting our lives as individuals and as a society in many different
areas, is power electronics. Prominent examples are the shift from
conventional energy sources to renewable energy sources, the reduction
of greenhouse gas emissions due to the electri cation of mobility, and
the trend towards cloud-computing in the information technology area,
which are all based on the development of cost-e ective, e cient and
compact power electronic systems. In order to ful ll future requirements
for power electronic systems, it is therefore of great importance
to identify new ways to develop systems with higher e ciency, power
density, and reliability.
The analysis of relevant literature reveals, that improvements of
power electronic systems are to a great extent either based on the improvements
of speci c components or on the modi cation of known
control algorithms and/or topologies. These improvement processes,
however, are of evolutionary nature and are not going to provide significant
steps of performance improvements compared to today's solutions
for the foreseeable future.
Eletromagnetismo para Sistemas e Automação
O conteúdo disponível nesta página refere-se à disciplina de Eletromagnetismo para Sistemas e Automação do curso de Engenharia de Controle e Automação da Universidade Federal de Santa Maria (UFSM). As principais competências e habilidades desenvolvidas ao longo da disciplina são enumeradas a seguir:
Possuir uma sólida base matemática para solucionar problemas de Eletromagnetismo
Compreender os conceitos fundamentais do Eletromagnetismo e as suas aplicações, no que se refere à:
Eletrostática
Magnetostática
Campos variáveis no tempo
Ondas eletromagnéticas
Linhas de transmissão
Equações de Maxwell
Softwares
Nesta disciplina são empregados os seguintes softwares:
FEMM (Simulação em elementos finitos - open source)
Ansys Maxwell (Simulação em elementos finitos - proprietário) Eletromagnetismo - Aula 21 - Equações de Maxwell para Campos Variáveis no Tempo
Universidade Federal de Santa Maria - UFSM
Disciplina de Eletromagnetismo para Sistemas e Automação
Prof. Rafael C. Beltrame - http://www.ufsm.br/beltrame
Nesta aula:
- Introdução
- Lei de Faraday-Lenz
- FEM de movimento de FEM de transformador
PAGINA WEB DEL CURSO COMPLETO EN VIDEOS Eletromagnetismo para Sistemas e Automação http://coral.ufsm.br/beltrame/index.php/disciplinas/graduacao/eletromagnetismo
BIOGRAFIA DOUTOR RAFAEL BELTRAME
Rafael Concatto Beltrame recebeu o grau de Engenheiro Eletricista, Mestre e Doutor em Engenharia Elétrica pela Universidade Federal de Santa Maria (UFSM), em 2008, 2009 e 2012, respectivamente. Também em 2012, graduou-se no Programa Especial de Formação de Professores para a Educação Profissional - Licenciatura Plena. Desde 2005 atua como pesquisador no Grupo de Eletrônica de Potência e Controle (GEPOC). Atualmente é Professor Adjunto no Departamento de Processamento de Energia Elétrica (DPEE) da Universidade Federal de Santa Maria. Tem experiência na área de Engenharia Elétrica, com ênfase em Eletrônica de Potência. Dentre as áreas de interesse estão acionamentos elétricos, síntese e análise de conversores estáticos, técnicas de auxílio à comutação e fontes CA de potência. É membro da Sociedade Brasileira de Eletrônica de Potência (SOBRAEP) e das sociedades IEEE Power Electronics, IEEE Industrial Electronics e IEEE Industry Applications.
2009 - 2012
Doutorado em Engenharia Elétrica.
Programa de Pós-Graduação em Engenharia Elétrica, PPGEE (Conceito CAPES 5).
Universidade Federal de Santa Maria, UFSM, Brasil.
Título: Fontes CA de potência: contribuição ao estudo e ao desenvolvimento de topologias híbridas.
Orientador: Prof. Hélio Leães Hey, Dr. Eng.
Co-orientador: Prof. Cassino Rech, Dr. Eng.
Physics, Class XII Chapter : Semiconductor Topic : Transistor, Introduction Classroom lecture by Pradeep Kshetrapal. Language : English mixed with Hindi.
EXAMENES DE ELECTRONICA INDUSTRIAL II - GRUPO DE SISTEMAS ELECTRONICOS DE POTENCIA- UNIVERSIDAD CARLOS III DE MADRID (2003-2007) LINK ORIGINAL EN LA WEB
http://gsep.uc3m.es/archivos/examenes/EIii/EI2.zip
High-Precision, Wideband, Highly Stable Current Sensing Technology
Kenta Ikeda and Hidekazu Masuda, Senior Staff at Hioki E.E. Corporation
Currently, there is demand for high-precision, wideband current measurement in the power electronics field, where typical products include power conversion systems such as power conditioners and inverters. Since launching the Clamp Tester CT-300 (see Figure 1) in 1971, Hioki has supplied a variety of current sensors (see Figure 2) designed for specific measurement applications. This paper describes the features of Hioki’s current sensors along with key considerations in current measurement, with a focus on high-precision, wideband current measurement.
Conception et réalisation d’un convertisseur
multicellulaire DC/DC isolé pour application
aéronautique
Julio Cezar Brandelero Résumé
L’électricité prend une place de plus en plus importante dans les systèmes
énergétiques embarqués. L’électricité est une forme d’énergie très malléable, facile à
transporter et réglable ou transformable avec un très faible taux de pertes. L’énergie
électrique, associée à des convertisseurs statiques, est plus facile à maîtriser que, par exemple,
l’énergie hydraulique et/ou pneumatique, permettant un réglage plus fin et une réduction des
coûts de maintenance. L’évolution de la puissance dans les modèles avioniques est
marquante. Avec le nombre croissant de charges électroniques, un avion plus électrique avec
un réseau à courant alternatif inclurait un grand nombre de redresseurs AC/DC qui devront
respecter les normes de qualité secteur. Une solution pour la réduction de la masse serait de
préférer un réseau HVDC (High Voltage DC Bus). Sur les futurs modèles avioniques plus
électriques, les concepteurs envisageront des conversions HVDC/DC à partir de l’unité
appelée BBCU (Buck Boost Converter Unit).
Dans ce cas d’étude, un réseau de distribution en tension continue (±270Vdc) est
connecté à un réseau de sécurité basse tension (28Vdc) avec un échange bidirectionnel de
puissance pouvant atteindre 10kW. Le convertisseur statique assurant cette liaison représente
de nouveaux défis pour l’électronique de puissance en termes de fiabilité, sûreté, détection de
panne, rendement et réduction de masse et de coût. Le dimensionnement du convertisseur doit
prendre en compte une conception optimale, en aéronautique ce critère est la masse. Dans le
processus de dimensionnement et d’optimisation du convertisseur, il est donc impératif de
prendre en compte trois facteurs principaux : 1) l’évolution des topologies de conversion, 2)
l’évolution des composants actifs et passifs et 3) l’intégration de puissance. La réunion de ces
trois facteurs permettra ainsi la miniaturisation des convertisseurs statiques.
Dans un premier temps, nous préciserons la démarche adoptée pour le
dimensionnement d’un convertisseur en prenant en compte : les topologies actives, les filtres
différentiels et le système de refroidissement. Les différents éléments qui composent le
convertisseur sont décrits dans un langage informatique orienté objet. Des facteurs de
performances seront également introduits afin de faciliter le choix des semi-conducteurs, des
condensateurs et du dissipateur pour un convertisseur statique. Dans un deuxième temps, nous
présenterons le fonctionnement d’une topologie multicellulaire DC/DC, isolée pour
l’application proposée. Nous présenterons les avantages du couplage de différentes phases de
ce convertisseur. Nous introduirons les différentes associations des cellules et leurs avantages,
possibles grâce à l’isolement, comme la mise en série et en parallèle. Puisque la
caractérisation des pertes des semi-conducteurs est essentielle pour le dimensionnement du
convertisseur statique, nous proposerons deux approches : un modèle de simulation
relativement simple et paramétré à l’aide de seules notices constructeurs ; et une méthode de
mesure des pertes dans les semi-conducteurs qui est à la fois précise et compatible avec les
composants les plus rapides. En ce qui concerne les composants magnétiques, une surface de
réponse des matériaux ferrites sera présentée. Nous allons décrire, par le biais analytique et de
simulation, des modèles pour la détermination du champ magnétique à l’intérieur du noyau et
des ondulations de courant engendrés. Finalement, en profitant des modèles et des résultats
obtenus dans les sections précédentes, nous montrerons le dimensionnement et la réalisation
de chaque partie du convertisseur BBCU 100kHz / 10kW. Une perspective d’un design idéal
est également présentée.
T H E S E
pour obtenir le grade de
DOCTEUR DE L’Université de Grenoble
Spécialité : « Génie Electrique»
préparée au Laboratoire de Génie Electrique de Grenoble
dans le cadre de l’Ecole Doctorale « Electronique, Electrotechnique, Automatique,
Télécommunication, Signal »
présentée et soutenue publiquement
par LAI Dac Kien
le 16 Décembre 2010
Contribution à l’Optimisation du
Dimensionnement de Composants Passifs
Intégrés pour l’Electronique de Puissance
Introduction générale
Contribution à l’optimisation du dimensionnement de composants passifs intégrés 12
Contexte de l’étude
L’électronique de puissance connaît actuellement une évolution vers l’intégration,
conséquences des contraintes liées aux besoins de miniaturisation mais aussi de réduction des
coût de fabrication. Cette intégration peut se présenter sous forme monolithique sur silicium
pour les composants semi-conducteurs, voire pour les composants passifs en très faible
puissance ou bien hybride pour des systèmes de plus forte puissance.
Dans bon nombre de cas, les systèmes hybrides offrent des possibilités de réduction des
volumes et les composants passifs, inductance, transformateur et condensateur, représentent
alors un frein à cette miniaturisation. Aujourd'hui les briques technologiques permettant la
réalisation de composants passifs, qu'ils soient capacitifs ou inductifs, existent. La mise en
œuvre de ces briques a déjà fait l'objet de nombreux travaux aux cours de vingt dernières
années. Malheureusement, dans nombre de ces travaux les dimensionnements sont conduits de
façon classique ne garantissant pas un résultat optimal que ce soit du point de vue du rendement
ou du volume.
Pourtant, depuis de nombreuses années, les techniques de simulation connaissent un
développement considérable. Les mises en œuvre expérimentales, souvent lourdes et coûteuses
sont progressivement remplacées par des études dans lesquelles les outils de simulation
prennent une place de plus en plus importante. Le développement des outils de modélisation et
d’optimisation des composants en électronique de puissance constitue donc un enjeu important.
Pour être utilisable dans un contexte industriel, ces outils de simulation doivent répondre à
certains critères : ils doivent permettre d’économiser le temps de mise au point et de ce fait, la
simplicité et la rapidité de simulation sont donc une des qualités recherchées mais ils doivent
aussi être les plus génériques possibles afin d'être applicable à un grand nombre de cahiers des
charges tout en garantissant une finesse de résultat suffisante.
C’est dans ce contexte que se situe ce sujet de thèse visant à progresser dans la
conception d’alimentations à forte puissance volumique.
Modeling and Control of a Three Phase
Voltage Source Inverter with an LCL Filter
by Aratrik Sarkar
A Thesis Presented in Partial Fulfillment
of the Requirements for the Degree
Master of Science
ARIZONA STATE UNIVERSITY
May 2015
ABSTRACT
This thesis addresses the design and control of three phase inverters. Such
inverters are used to produce three-phase sinusoidal voltages and currents from a
DC source. They are critical for injecting power from renewable energy sources
into the grid. This is especially true since many of these sources of energy are DC
sources (e.g. solar photovoltaic) or need to be stored in DC batteries because they
are intermittent (e.g. wind and solar). Two classes of inverters are examined in this
thesis. A control-centric design procedure is presented for each class. The first class of
inverters is simple in that they consist of three decoupled subsystems. Such inverters
are characterized by no mutual inductance between the three phases. As such, no
multivariable coupling is present and decentralized single-input single-output (SISO)
control theory suffices to generate acceptable control designs. For this class of
inverters several families of controllers are addressed in order to examine command
following as well as input disturbance and noise attenuation specifications. The goal
here is to illuminate fundamental tradeoffs. Such tradeoffs include an improvement
in the in-band command following and output disturbance attenuation versus a
deterioration in out-of-band noise attenuation. A fundamental deficiency associated
with such inverters is their large size. This can be remedied by designing a smaller
core. This naturally leads to the second class of inverters considered in this work.
These inverters are characterized by significant mutual inductances and multivariable
coupling. As such, SISO control theory is generally not adequate and multiple-input
multiple-output (MIMO) theory becomes essential for controlling these inverters.
LINK COMPLETE THESIS https://repository.asu.edu/attachments/150811/content/Sarkar_asu_0010N_15085.pdf
Electronic Engineering (Constant Voltage Circuit) - Provided by Kim, Gyun Nam (Korea Institute of Science & Technology)- 전자공학(정전압회로) - 김기남공학원 제공(방송기술직, 공기업 공채전문 학원)
Analysis and Design of High Frequency
Gapped Transformers and Planar
Transformers in LLC Resonant Converters
by
Jun Zhang
B.E. and M.S., Zhejiang University, China
in fulfilment of the requirements for the degree of
Doctor of Philosophy
in the subject of
Electrical and Electronic Engineering.
Abstract
The LLC resonant converter is particularly applicable for power supplies applications
since soft switching is easily achieved. The dual objectives in power supply are higher
switching frequencies and higher power densities. The analysis and design of the LLC
resonant converter, especially the magnetic components needs further investigation
and the related research has enormous practical significance.
In this thesis, the design methodology for the LLC resonant converter is proposed
based on the circuit analysis and the loss calculations with soft switching conditions
and input voltage variations considered. The gapped transformer employed in the
resonant converter is deeply investigated. The transformer was treated as the multiwinding
inductor and a new design methodology is proposed. The parasitic parameters
in the transformer involving high frequency leakage inductance and stray capacitance
are studied, and reliable evaluation formulas are presented.
With the purpose of introducing the planar transformer in the LLC resonant converter,
the detailed modelling of planar transformer including the winding loss calculation,
the stray capacitance and the leakage inductance for the integrated planar structure
incorporating the low permeability magnetic shunt is carried out. Combing the
analytical results of the gapped transformer design method and modelling of the planar
transformer, the gapped planar transformer for the LLC resonant converter is designed
and fabricated. Comparison with the conventional transformer shows that successful
operation is possible with the low profile core.
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