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Browsing Doutorado em Engenharia Elétrica (Teses) by Issue Date

Browsing Doutorado em Engenharia Elétrica (Teses) by Issue Date

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  • Alves, Ana Sophia Cavalcanti; http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4420920H7 (Universidade Federal de Juiz de Fora (UFJF)BrasilFaculdade de EngenhariaPrograma de Pós-graduação em Engenharia ElétricaUFJF, 2012-11-27)
    This present work aims to apply and compare linear and nonlinear control techniques in attitude stabilization of a quadricopter. At first, is presented a aircraft dynamic model for simulation and control of the system. Then, ...
  • Rodrigues, Cláudio Roberto Barbosa Simões; http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4757197T6 (Universidade Federal de Juiz de ForaBrasilFaculdade de EngenhariaPrograma de Pós-graduação em Engenharia ElétricaUFJF, 2012-12-17)
    In order to present contributions to the use of light emitting diodes (LEDs) in public lighting systems, covering gaps on the national scenario, this work encompasses abroad analysis related to this issue. Basic concepts ...
  • Amaral, Marcelo Batista do; http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4785728U6 (Universidade Federal de Juiz de ForaBrasilFaculdade de EngenhariaPrograma de Pós-graduação em Engenharia ElétricaUFJF, 2012-12-17)
    This work presents a new methodology for static load modeling using direct field measurement procedures and optimization techniques. For this purpose, a new field measurement procedure was developed based on a specific ...
  • Castro, Cristina Márcia Barros de; http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4775099H3 (Universidade Federal de Juiz de ForaBrasilFaculdade de EngenhariaPrograma de Pós-graduação em Engenharia ElétricaUFJF, 2012-12-27)
    Aiming to match the long term load demand with a low cost in power generation, it is very important to improve more and more the operation planning of the Brazilian electric sector. The operation planning of medium/long ...
  • Almeida, Pedro Machado de; http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4423820A6 (Universidade Federal de Juiz de Fora (UFJF)BrasilFaculdade de EngenhariaPrograma de Pós-graduação em Engenharia ElétricaUFJF, 2013-11-29)
    The current thesis contributes to the analysis, modelling and design of discrete time controllers which aim is to control a 30 kWp photovoltaic dispersed generation system connected to the electric grid without passive ...
  • Prates, Mauro de Oliveira; http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4105315E7 (Universidade Federal de Juiz de Fora (UFJF)BrasilFaculdade de EngenhariaPrograma de Pós-graduação em Engenharia ElétricaUFJF, 2014-04-10)
    In this work, two methods based on the injection of controlled disturbances are proposed in order to evaluate characteristics of the Electrical Power System (EPS). The proposed methods perform the characterization of ...
  • Picorone, Antonio Angelo Missiaggia; http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4138476P5 (Universidade Federal de Juiz de Fora (UFJF)BrasilFaculdade de EngenhariaPrograma de Pós-graduação em Engenharia ElétricaUFJF, 2014-08-22)
    This dissertation aims at discussing the measurement and characterization of outdoor electric power grid of low voltage as communication medium (power line communication - PLC). Statistical analyses carried out on several ...
  • Menezes, Alam Silva; http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4739597J6 (Universidade Federal de Juiz de ForaBrasilFaculdade de EngenhariaPrograma de Pós-graduação em Engenharia ElétricaUFJF, 2014-09-01)
    This dissertation aims at discussing solutions to deal with spectral analysis of stationary and non-stationary processes for frequency estimation, power spectral density estimation and spectral monitoring applications. ...
  • Rodrigues, Márcio do Carmo Barbosa Poncilio; http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4776530T7 (Universidade Federal de Juiz de Fora (UFJF)BrasilFaculdade de EngenhariaPrograma de Pós-graduação em Engenharia ElétricaUFJF, 2014-11-20)
    The gradual replacement of the current internal combustion engine vehicles by elec-tric vehicles (EVs) comes up as being an important factor to the improvement of urban centers environmental conditions, since it enables ...
  • Almeida, Pedro Santos; http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4206164D6 (Universidade Federal de Juiz de ForaBrasilFaculdade de EngenhariaPrograma de Pós-graduação em Engenharia ElétricaUFJF, 2014-12-11)
    This work presents a study regarding the driving of light-emitting diodes (LEDs) fed from mains power. This study involves an analysis of the thermal, electrical and photometrical characteristics of the LEDs, aiming an ...
  • Valente, Wander Antunes Gaspar; http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4734362U1 (Universidade Federal de Juiz de ForaBrasilICH – Instituto de Ciências HumanasPrograma de Pós-graduação em HistóriaUFJF, 2015-02-09)
    This work is based on the method of successive geometric segmentations (SGSM) for the construction of an artificial neural network capable of generating both the network topology as the weight of neurons without specifying ...
  • Ramos, Tales Pulinho; http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4283072U4 (Universidade Federal de Juiz de ForaBrasilFaculdade de EngenhariaPrograma de Pós-graduação em Engenharia ElétricaUFJF, 2015-02-23)
    The National Interconnected Power System (NIPS) presents around 150 hydraulic plants and the medium term planning contemplates between 5 to 10 years of study, the representation of the system to individualized plants ...
  • Ferreira, Rodrigo Arruda Felício; http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4262503A2 (Universidade Federal de Juiz de Fora (UFJF)BrasilFaculdade de EngenhariaPrograma de Pós-graduação em Engenharia ElétricaUFJF, 2015-03-13)
    This work presents aspects related to DC microgrids, an alternative way of using renewable energy sources in a decentralized fashion. Whereas the maintenance of the microgrid main bus voltage, in which the sources and loads ...
  • Oliveira, Thiago Rodrigues; http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4484001E1 (Universidade Federal de Juiz de ForaBrasilFaculdade de EngenhariaPrograma de Pós-graduação em Engenharia ElétricaUFJF, 2015-03-24)
    This work outlines initially a methodology to be applied to the characterization of electric power grids for data communication purposes. This methodology englobes all the procedures and required signal processing tools ...
  • Martins, Carlos Henrique Nascimento; http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4759130J6 (Universidade Federal de Juiz de Fora (UFJF)BrasilFaculdade de EngenhariaPrograma de Pós-graduação em Engenharia ElétricaUFJF, 2015-03-26)
    In this work is presented the steps of development and implementation of a Power Quality paramaters monitoring system with main goal events denomined ”time arying harmonics”named of Time Varying Harmonic Analyzer. The ...
  • Oliveira, André Diniz de; http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4776383D6 (Universidade Federal de Juiz de ForaBrasilFaculdade de EngenhariaPrograma de Pós-graduação em Engenharia ElétricaUFJF, 2015-05-27)
    This thesis proposes two methods to estimate the phasor of the fundamental frequency component. The first one estimates the phasor in the presence of harmonic, decaying DC, and noise. The second one estimates the phasor ...
  • Pereira, Luiz Eduardo de Souza; http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4426000Y1 (Universidade Federal de Juiz de ForaBrasilFaculdade de EngenhariaPrograma de Pós-graduação em Engenharia ElétricaUFJF, 2015-06-12)
    The analysis of the deterministic power flow is restricted to a single time instant. However, the active and reactive load powers, among others, vary constantly and affect the voltage profiles and line flows throughout ...
  • Rosseti, Gustavo José Santiago; http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4422432D8 (Universidade Federal de Juiz de ForaBrasilICE – Instituto de Ciências ExatasPrograma de Pós-graduação em Engenharia ElétricaUFJF, 2015-08-31)
    This thesis presents a methodology for maximizing the load restoration in power distribution system after simultaneous occurrence of contingency. Therefore, a heuristic constructive algorithm is proposed to determine ...
  • Peralva, Bernardo Sotto-Maior; http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4276258H4 (Universidade Federal de Juiz de ForaBrasilFaculdade de EngenhariaPrograma de Pós-graduação em Engenharia ElétricaUFJF, 2015-09-11)
    This thesis presents data processing techniques of signal detection and energy estimation for high energy calorimetry. Modern calorimeters have thousands of readout channels and operate at high event rate conditions. ...
  • Schettino, Bruno Montesano; http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4214370U3 (Universidade Federal de Juiz de ForaBrasilFaculdade de EngenhariaPrograma de Pós-graduação em Engenharia ElétricaUFJF, 2015-12-08)
    This work proposes a method for detecting the saturation of the current-transformer cores used in the protection of electric power systems and promote the compensation for its effects by correcting the secondary current ...