Buscar
Itens para a visualização no momento 131-140 of 209
Aplicação do método de Fauchart para obtenção dos carregamentos em longarinas de pontes de múltiplas vigas
(Universidade Federal de Santa Maria, 2019-12-18)
In Brazil, it is common practice to use prestressed concrete multi-beam trays in elevated highways, viaducts and bridges. To analyse the multiple concrete beams superstructure, a grid-based structural model is created. ...
Desenvolvimento de um driver de injeção direta para motores ciclo otto empregando controlador repetitivo no estágio de saída
(Universidade Federal de Santa Maria, 2019-12-06)
This term paper proposes the development of a direct injection driver for solenoid injectors applied to Otto engines, employing a repetitive controller on the output stage. The fuel injectors typically used in direct ...
Análise e experimentos do conversor DAB com diferentes modulações aplicado para o carregamento de baterias
(Universidade Federal de Santa Maria, 2019-12-06)
This undergraduate final work presents a bibliographic review on batteries and DC-DC isolated bidirectional converters to introduce the Dual Active Bridge (DAB) converter, used in power systems to connect a DC bus to a ...
Simulação e análise de esforços eletromecânicos em transformadores elétricos utilizando o método de elementos finitos
(Universidade Federal de Santa Maria, 2019-07-01)
Due the increasing demand of electrical energy in the power electric system, the short-circuit
level become larger each day, taking the equipment connected to the system to critical
conditions. These conditions affect ...
Análise de técnicas de equalização de canal para SC-FDMA
(Universidade Federal de Santa Maria, 2019-07-12)
As for the main problems found in wireless digital communication systems, the multipath phe-
nomenon stands out, as it could cause severe distortion on the transmitted signal, possibly com-
promising the system’s whole ...
Obtenção de parâmetros dinâmicos da máquina síncrona de polos salientes através de ensaios de resposta em frequência
(Universidade Federal de Santa Maria, 2019-07-09)
In this paper, initially on time domain, the constructive and electrical characteristics of the
synchronous machine will be analyzed in order to define the equations that represents the
dynamic behavior of synchronous ...
Análise da viabilidade econômica na adesão de tarifa branca em consumidores residenciais de forma independente e associada à geração distribuída fotovoltaica
(Universidade Federal de Santa Maria, 2019-07-12)
This paper presents an economic feasibility study on migration or adhesion to the “White Fare”
for residential consumers, based on a comparative analysis with the conventional fare, where
the preservation of consumption ...
Análise de controladores de corrente através de Hardware in the Loop
(Universidade Federal de Santa Maria, 2019-07-15)
This work is based in the comparison between three current controllers. Several tests were car-
ried out with the same parameters for a fair and technical comparison
Análise de transferência de ondulação de baixa frequência para os conversores SEPIC e ZETA para drivers de led
(Universidade Federal de Santa Maria, 2019-07-18)
This paper presents the design, simulation and development of two topologies for
converters with the objective of developing a mathematical analysis describing the behavior
of the low frequency ripple transfer between ...
Simulação de um quadro de Epstein empregando o método de elementos finitos
(Universidade Federal de Santa Maria, 2019-06-11)
The increasing consumption of electric energy leads to the need to increase its
generation, which implies concerns about impacts on the environment. Renewable energies
are ways to get around these facts. However, there ...