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Modelagem da capacitância de elementos magnéticos para elevadas frequências e classes de isolação
(Universidade Federal de Santa Maria, 2018-08-27)
This PhD thesis presents the development of models of magnetic elements for high frequency and insulation classes. Currently, there is an increasing demand for implementation of such elements as the power electronics has ...
Estudo experimental e numérico de vigas curtas reforçadas com PRFC à força cortante
(Universidade Federal de Santa Maria, 2018-12-18)
Reinforcement systems with carbon fiber composites may be employed for restoring the strength of a structural member, or to strengthen a structure to resist increased loading due to changes in structure utilization. In ...
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 ...
Ozônio flotação na colheita de microalgas cultivadas em efluente sanitário
(Universidade Federal de Santa Maria, 2018-09-04)
The lack of treatment of sanitary effluents causes several problems, both public health and environmental problems. And it can be reduced by using this sanitary effluent as a source of nutrients for microalgae growth. In ...
Preparação de catalisadores à base de ferrita de cobalto para aplicação na remoção de contaminantes em efluentes líquidos por processos oxidativos avançados
(Universidade Federal de Santa Maria, 2018-11-09)
This work aims to prepare cobalt ferrite (CoFe2O4) based-catalysts for use in the heterogeneous reactions of ozonation, photo-Fenton and photocatalysis aiming the decomposition of recalcitrant organic pollutants from aqueous ...
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 ...
Avaliação do comportamento da retrorrefletividade em rodovia com micro revestimento asfáltico à frio
(Universidade Federal de Santa Maria, 2018-07-30)
More than one million people are killed annually around the world as a result of traffic accidents. In Brazil, this epidemic costs the public coffers 56 billion a year. More than half of the fatal accidents in Rio Grande ...
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 ...