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Análise de sensibilidade na metodologia nodal para o cálculo da tarifa de uso do sistema de transmissão
(Universidade Federal de Santa Maria, 2018-07-19)
The reform of the 90s resulted in a vast impact on the Brazilian electrical system, mainly due to privatizations that occurred in that decade. The opening in the energy market has de-verticalized the four sectors of the ...
Modulação phase disposition com algoritmo de sorting para conversores multiníveis simétricos em cascata
(Universidade Federal de Santa Maria, 2018-08-03)
This master thesis presents a modulation technique with sorting of the command
signals of semiconductor devices, applied to symmetric cascaded multilevel converters.
This technique, referenced here as Phase Disposition ...
Modelagem e controle de um conversor CUK isolado com célula R2P2 e multiplicador de tensão
(Universidade Federal de Santa Maria, 2018-07-27)
In recent years, there is an increasing energy demand due to the use of fossil fuels and it
has caused very large impacts on nature. As scientists and industries are aware that this
type of production uses limited reserves, ...
Ensaio automatizado de medição da eficiência energética de inversores fotovoltaicos conectados à rede
(Universidade Federal de Santa Maria, 2018-07-16)
The objective of this work is the development of an automated test bench to measure the energy efficiency of grid connected photovoltaic inverters. A detailed study of the energy efficiency measurements standards for ...
Projeto e análise de observadores adaptativos aplicados ao controle sensorless de máquinas síncronas de ímãs permanentes
(Universidade Federal de Santa Maria, 2018-08-06)
This master dissertation presents contributions to the study, development, and design
of adaptive observers applied to the estimation of rotor speed of permanentes magnet
synchronous machines. The rst proposed technique ...
Controle por modos deslizantes aplicado a um DSTATCOM utilizado em sistemas com gerador de indução autoexcitado para compensação de harmônicos e desbalanceamento
(Universidade Federal de Santa Maria, 2018-02-23)
This dissertation aims to present the design of a distribution synchronous static
compensator (DSTATCOM) control system applied to the voltage regulation and harmonic
and unbalanced load currents compensation in self ...
Análise de topologias para lâmpada bulbo led utilizando dispositivos semicondutores de nitreto de gálio operando em 1MHz
(Universidade Federal de Santa Maria, 2018-08-31)
This paper presents the losses and efficiency evaluation to three different topologies. This paper
goals are evaluating the losses percental related to the semiconductors devices, Gallium Nitride (GaN). This paper presents ...
Metodologia para análise e ajuste da seletividade de dispositivos de proteção em situações de contingência
(Universidade Federal de Santa Maria, 2018-08-23)
The concept of Smart Grid (SG) modified the way of operation and planning of electrical systems, encouraging automation, distributed generation, among others. As a result of this new system design, a series of applications ...
Controlador digital multi-amostras PID e V2 COT híbrido para regulador buck síncrono
(Universidade Federal de Santa Maria, 2018-02-23)
This work presents a hybrid digital control method for a point-of-load synchronous buck
converter implemented in a digital signal processor, seeking to achieve high efficiency in light
loads and good transitory responses. ...
Sistema de controle para turbina eólica de eixo vertical
(Universidade Federal de Santa Maria, 2018-11-30)
This master thesis presents the development of a control system to vertical axis
wind turbine in order to harnessing its maximum performance. Vertical axis turbine
designs and how they could be integrated with urban area ...