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Análise do carregamento de veículos elétricos na curva de carga do transformador de distribuição
(Universidade Federal de Santa Maria, 2017-12-04)
The objective of this dissertation is to evaluate the insertion of Electric Vehicles (EVs) on the distribution system. Motivated by the shortage of deterministic data regarding the process of charging EVs batteries, a ...
Análise e desenvolvimento de sistema eletrônico de iluminação com LEDs de potência empregando conversor ressonante e indutor variável
(Universidade Federal de Santa Maria, 2017-08-25)
An analysis and design of a power control stage topology for an LED (Light Emitting Diode) driver for lighting is presented in this work. The circuit is based on the resonant topology LLC-HB – resonant filter LLC type fed ...
Algoritmo para cálculo e compensação da corrente capacitiva aplicado em relés diferenciais para proteção de linhas de ultra alta tensão
(Universidade Federal de Santa Maria, 2017-12-05)
Transmission lines have different characteristics and properties that define their parameters. One of the main components that is included in the modeling is the shunt capacitance. It generates a current that becomes ...
Sistema de comunicação e controle para múltiplos conversores aplicados em transformador de estado sólido
(Universidade Federal de Santa Maria, 2017-09-05)
This PhD Dissertation proposes a communication and control structure for multiple
converters systems, with emphasis on modular structures applied in solid state transformers
(SST) with three power stages. The SST under ...
Análise e metodologia de projeto de conversores cc-cc isolados com comutação sob tensão nula: ponte-completa e duplo meia-ponte
(Universidade Federal de Santa Maria, 2017-08-10)
This work presents a study of an isolated DC-DC converter with zero-voltage switching (ZVS)
and phase-shifted (PS) applied to full-bridge (ZVS-PS-FB) and double half-bridge converters
(ZVS-PS-DHB). The double half-bridge ...
Um controlador ótimo robusto aplicado a inversores conectados à rede
(Universidade Federal de Santa Maria, 2017-06-26)
This thesis deals with a robust optimum control obtained through linear matrix inequalities
applied to inverters connected to the grid through LCL filters. First, the plant
is modeled in the state space, and the uncertainty ...
Circuitos de acionamento para lâmpada LED tubular utilizando conversores a capacitor chaveado
(Universidade Federal de Santa Maria, 2017-08-11)
This work presents the design, simulation and experimental development of a topology using switched capacitor to feed a LED lamp to street lighting. The designed and tested circuits aim to feed a LED tubular lamp with power ...
Concepção e desenvolvimento de um sistema eletrônico baseado em diodos emissores de luz para simulação de espectro
(Universidade Federal de Santa Maria, 2017-07-18)
This master thesis presents the conception and development of a lighting system based on lighting emitting diodes (LEDs) capable of accurately reproducing light spectra. The main motivation of this work is the development ...
Método para estimação da distância de faltas de alta impedância em redes de distribuição de energia elétrica considerando diferentes tipos de solo
(Universidade Federal de Santa Maria, 2017-06-30)
This work proposes a time-domain methodology to locate high impedance faults in overhead distribution systems. One of the innovative aspects of the method is the proposition of a single mathematical model to represent the ...
Abordagem normalizada para conversores ressonantes
(Universidade Federal de Santa Maria, 2017-08-04)
Resonant converters reveal their excellence by means of the philosophy of shaping
the converters waveforms in a sinusoidal fashion, allowing soft-switching, increase
the operating frequency and reduce electromagnetic ...