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Metodologia para detecção e classificação de faltas em transformadores de potência por meio da Transformada Wavelet Discreta
(Universidade Federal de Santa Maria, 2018-08-28)
This thesis presents the development of a methodology for the detection and
classification of electrical transients in power transformers, for protection purposes. For this,
we analyzed several electrical transients ...
Sistema fotovoltaico autônomo utilizando configuração multi-string e inversor multinível
(Universidade Federal de Santa Maria, 2011-08-11)
The continuous economic development of many countries and the emerging environmental
issues (gas emissions and the greenhouse effect) observed in the last decades forced an intense
research in renewable energy sources. ...
Projeto e implementação de um conversor módulo integrado para conexão de geração fotovoltaica à rede elétrica
(Universidade Federal de Santa Maria, 2018-02-27)
This Master Thesis presents the analysis, design and implementation of a grid-connected
module integrated converter, or, simply, microinverter, for photovoltaic applications. The
system is composed of two stages: a ...
Reconfiguração automáticas das redes de distribuição de energia elétrica com monitoramento em tempo real
(Universidade Federal de Santa Maria, 2013-09-13)
In normal operation, the reconfiguration of distribution network can reduce losses,
balance loads and improve quality indicators. The increasing use of remote controlled
equipment in power systems leads the development ...
Uma metodologia de otimização para sistemas de iluminação que empregam LEDs
(Universidade Federal de Santa Maria, 2015-03-09)
This work presents an optimization methodology for lighting systems that employ LED.
Initially, this work brings a calculation methodology capable of obtaining a thermal resistance
of heat sink from their dimensions of ...
Controle escalar sensorless para sistemas de conversão de energia eólica com gerador síncrono de ímãs permanentes
(Universidade Federal de Santa Maria, 2015-08-21)
This master thesis proposes a control method of scalar direct torque control and
a technique of current control to maximize the aerodynamic efficiency of wind energy
conversion systems (WECS) using permanent magnets ...
Concepção e análise de um sistema de energia para picosatélites
(Universidade Federal de Santa Maria, 2016-04-27)
In 1999 the CubeSat project was created to favor and minimize launch costs
of picosatellites, mostly didactic. Given the constraints of volume, weight and cost,
energy systems must aim for efficiency and simplicity. The ...
Metodologia de projeto de inversores para redução do custo de sistemas fotovoltaicos
(Universidade Federal de Santa Maria, 2014-02-25)
In photovoltaic systems, the lowest energy cost is not always achieved by an inverter with minimized cost or maximized efficiency. It is important to adopt methodologies that optimize the balance between system losses and ...
Fontes CA de potência: contribuição ao estudo e ao desenvolvimento de topologias híbridas
(Universidade Federal de Santa Maria, 2012-12-20)
In this thesis an study of AC Power Source (ACPS) topologies that guarantee the synthesis
of high quality voltage waveforms (in comparison to the reference signal) without
penalizing the system efficiency is carried out. ...
Metodologia de projeto eletrotérmico de LEDs aplicada ao desenvolvimento de sistemas de iluminação pública
(Universidade Federal de Santa Maria, 2012-07-23)
This work presents an LED electrothermal design methodology applied to a street
lighting system. The methodology aims to provide indicatives of the optimal LED operating
point for lighting systems design, considering ...