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Itens para a visualização no momento 21-30 of 147
Controlador adaptativo robusto por modelo de referência no eixo zero aplicado ao controle de desbalanço de tensões de fase em geradores de indução autoexcitados isolados
(Universidade Federal de Santa Maria, 2020-02-27)
In this work, a voltage and frequency regulation system was implemented for a micro hidropower
generation plant using an induction generator operating in standalone mode or not connected
to a commercial energy distribution ...
Metodologia para maximização da inserção da geração fotovoltaica nas redes de distribuição de baixa tensão
(Universidade Federal de Santa Maria, 2020-06-26)
Not long ago, the electricity system was organized into a generation system, away from consumption centers and a transmission system that carried energy for long periods until it reached the distribution system, where ...
Indicador de fragilidade operacional para priorização e substituição de baterias de chumbo ácido ventilada em subestação
(Universidade Federal de Santa Maria, 2021-01-28)
This dissertation presents a methodology for the classification and indication of
replacement of ventilated lead acid batteries used in substations through the use of
the operational fragility indicator composed of two ...
Modelagem e controle de um sistema híbrido de microgeração empregando o inversor de fonte dividida
(Universidade Federal de Santa Maria, 2021-08-09)
This master’s thesis deals with the development of modeling and a control strategy for a hybrid
renewable energy microgeneration system hydro-PV employing a three-phase three-leg Split-
Source Inverter (SSI). Integration ...
Veículos elétricos em órgãos públicos: metodologia para substituição gradual da frota a combustão por veículos elétricos
(Universidade Federal de Santa Maria, 2021-08-28)
The market for electric vehicles (EV) in Brazil is still insignificant when compared to the existing fleet in countries in Europe, China and the United States, where there has been significant growth in recent years. Brazil ...
Viabilidade do ambiente de contratação livre em um órgão público
(Universidade Federal de Santa Maria, 2020-02-28)
This work has as purpose to demonstrate the study about economic viability
for reduction of associated costof energy from Brazilian public agents through the
migration from Regulated Contract Environment into Free Contract ...
Metodologia de ensaios dielétricos para sistemas de isolação sólido-líquido aplicados a transformadores de potência
(Universidade Federal de Santa Maria, 2021-11-30)
This master thesis presents contributions to the field of dielectric tests for solidliquid
insulation systems applied to power transformers. It is intended that this methodology
serves as a reference guide to obtain ...
Procedimento de projeto de controladores robustos para conversores de potência por meio de otimização por enxame de partículas
(Universidade Federal de Santa Maria, 2020-02-18)
This master thesis provides as contribution a design procedure, based on particle
swarm optimization and Kharitonov’s Theorem, to obtain fixed gains for robust controllers
for power converters with parametric uncertainties. ...
Abordagem de conversores ressonantes classe e quadrático com aplicação de PSO
(Universidade Federal de Santa Maria, 2021-05-21)
This dissertation presents the application of the particle swarm optimization algorithm (PSO) to obtain design parameters for the inverting step of a quadratic Class E converter. This converter can be designed by modeling ...
Análise do impacto logístico no setor de transporte de cargas: estudo de caso com a introdução de caminhões elétricos
(Universidade Federal de Santa Maria, 2021-04-09)
Efficient and economical cargo transportation is an important factor to contribute to the development of the economy, competitiveness in the market and the reduction of expenses in the logistics of companies. Electric ...