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Técnicas para otimização de conversores da família boost com alto ganho de tensão e alto rendimento aplicados à célula a combustível
(Universidade Federal de Santa Maria, 2019-02-28)
In this work, it is proposed methodologies for design optimization of high gain boost static converters
applied to fuel cells. In this aplication, two types of boost converters are evaluated.
The first one is based on ...
Estudo do efeito deletério da água em misturas asfálticas a quente produzidas no Rio Grande do Sul
(Universidade Federal de Santa Maria, 2019-02-21)
Asphalt pavements should provide users with safe and reliable transportation, however, agents such as traffic actions, weather conditions and inadequate maintenance result in the process of road deterioration. The water ...
Gráficos de controle de regressão beta robustos
(Universidade Federal de Santa Maria, 2019-02-19)
Control charts are the main tool of the statistical control process (SPC) to monitor and extract
information about a certain process. The usual control charts are built under the normality
assumption of the data or ...
Controle individual de passo para turbinas eólicas utilizando controlador adaptativo
(Universidade Federal de Santa Maria, 2019-02-26)
This Master Thesis deals with the problem of reducing the resulting asymmetrical
mechanical loads on the structure of large wind turbines, with horizontal axis and three
blades, by means of individual pitch control of ...
Análise do modo de ruptura e previsão de resistência à compressão de prismas de alvenaria estrutural de blocos cerâmicos e de concreto
(Universidade Federal de Santa Maria, 2019-02-27)
The biggest challenge of structural masonry is to correlate the set bedding mortar-block and transform it into a ductile system, with a predictive behaviour, as these materials own properties and different compositions ...
Monitoramento e acionamento remoto da movimentação e arrefecimento de painéis fotovoltaicos para maximização da potência e eficiência
(Universidade Federal de Santa Maria, 2019-03-07)
The world's electricity consumption increases every day along with concerns about the
environment. In order to supply the increase in the demand for electric power in Brazil there
has been in recent years a great expansion ...
Regime de escoamento do Rio Uruguai no trecho entre a hidrelétrica de Foz do Chapecó e o Salto do Yucumã
(Universidade Federal de Santa Maria, 2019-02-27)
The Uruguay River, due to its hydrodynamic and topographic characteristics, is considered one of the main national water courses for hydroelectric use and, consequently, subject to the impacts resulting from the installation ...
Estratégias de controle para grupo motor-gerador a etanol operando com velocidade variável
(Universidade Federal de Santa Maria, 2019-02-28)
This master thesis presents two strategies for speed control and power generation
by a variable speed ethanol generator set (genset), where the power generated is reflected
in the current of the battery bank. Initially, ...
Estudo de viabilidade de concreto estrutural com areia de descarte de fundição e adições minerais: propriedades mecânicas e análise de ciclo de vida
(Universidade Federal de Santa Maria, 2019-03-20)
The large volume of waste generated by some productive sectors has led researchers to find suitable solutions for their reuse, in order to address technical, economic, social and environmental issues. The high consumption ...
Isolamento a ruído de impacto de laje pré-fabricada nervurada composta de vigotas protendidas e lajotas cerâmicas com revestimento cerâmico
(Universidade Federal de Santa Maria, 2019-03-15)
Impact noise is one of the main discomfort factors among users of multi-floor buildings and is directly related to the construction system and materials used in building construction. A problem that can be solved still in ...