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Novos métodos para prover segurança à comunicação no âmbito de redes elétricas inteligentes
(Universidade Federal de Santa Maria, 2018-03-23)
Information and communication technologies (ICT) incorporated into the power grid allows
the full implementation of the smart grids (SG) concept. Among the segments of the power
grid, providing this integration to energy ...
Metodologia para análise do balanço energético usando estimador de estados e medição em tempo real
(Universidade Federal de Santa Maria, 2018-07-26)
With the advent of smart grid, it is expected a new design for operation and planning of the electrical systems, changing the way how we manage and relate to the distribution systems. The term Smart Grid is used as an ...
Controle inteligente do despacho de geração distribuída para atendimento dos limites de demanda de uma microrrede
(Universidade Federal de Santa Maria, 2018-03-28)
The use of distributed generation (DG) allied to smart grids offers a series of benefits for the electrical system and, consequently, the society that makes use of it. Specifically in the economic and planning context, ...
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 ...
Aumento de rendimento e potência em painéis fotovoltaicos por reconfiguração das interconexões e arrefecimento geotérmico
(Universidade Federal de Santa Maria, 2018-08-27)
This doctoral thesis deals with the reconfiguration of photovoltaic interconnections linked to PV panel cooling by surface geothermal energy through water circulation to increase efficiency, power and lifetime 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 ...
Análise de viabilidade técnica e econômica de um sistema solar fotovoltaico Grid-Tie em uma empresa de pequeno porte do setor metal-mecânico
(Universidade Federal de Santa Maria, 2018-12-14)
Renewable energy is important in the current context of electricity production, marked
by the search for renewable and increasingly clean sources of energy. The most used renewable
sources, especially solar photovoltaic, ...