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Indicador de vulnerabilidade operacional para priorização e substituição de transformadores de potência em subestações
(Universidade Federal de Santa Maria, 2018-02-19)
This thesis presents a new methodology for the classification and substitution of power
transformers in substations. The thesis proposes the use of the Operational Vulnerability
Indicator (OVI), which consists of two ...
Análise e desenvolvimento de sistema eletrônico de iluminação com LEDs de potência empregando conversor ressonante e indutor variável
(Universidade Federal de Santa Maria, 2017-08-25)
An analysis and design of a power control stage topology for an LED (Light Emitting Diode) driver for lighting is presented in this work. The circuit is based on the resonant topology LLC-HB – resonant filter LLC type fed ...
Estratégias multimalhas para controle de corrente de inversores conectados à rede por meio do filtro LCL
(Universidade Federal de Santa Maria, 2018-02-26)
This master thesis presents contributions to the study and development of current
control of the grid-tied inverter through an LCL filter, by using multiloop control strategies.
In the first proposed scheme, the inner ...
Aplicação do método de análise hierárquica AHP para a seleção de tecnologias limpas na geração de energia em uma termelétrica a carvão mineral
(Universidade Federal de Santa Maria, 2017-12-15)
The expansion of energy supply is fundamental for the economic and social development of a country, influencing decisively the infrastructure of the production sectors. Coal is the main source of energy in the world. China, ...
Análise incremental construtiva em estruturas de aço considerando a interação solo-estrutura
(Universidade Federal de Santa Maria, 2017-08-30)
The growth of steel as structural material and the development of more advanced computational programs, coupled with the advancement of technology, allow the numerical modeling and analysis of steel building structures to ...
Uso de abordagem heurística para o problema do quadro de horários e alocação de salas de aula
(Universidade Federal de Santa Maria, 2018-09-14)
This study is about the problem to elaborate the teachers’ timetabling and the classroom assignment in Instituto Federal Farroupilha - Campus Avançado Uruguaiana. This task is already known because of its complexity and ...
Práticas inovadoras no setor de e-commerce no Brasil
(Universidade Federal de Santa Maria, 2018-03-09)
With the speed of changes occurring in the global market, companies need to be constantly updated and in search of new strategies to win and retain their customers. In this sense, the Internet becomes an important tool to ...
Análise da viabilidade econômica de substituição de um veículo em uma transportadora de cargas frigorificadas de Santa Maria
(Universidade Federal de Santa Maria, 2017-06-27)
The road cargo transport is currently the most used logistic modal in Brazil, due to its high flexibility for the distribution of products and goods by the vast Brazilian territory. To remain competitive, the cargo transport ...
Estudo da eficiência energética pneumática no sistema de abertura de portas de veículos de transporte de passageiros "ônibus"
(Universidade Federal de Santa Maria, 2015-03-30)
In pneumatics, the path to greater energy efficiency will careful engineering to configure the solutions based on real needs, the implementation of consistent energy efficiency targets in applications. The aim of this study ...
Obtenção e caracterização de biocarvão a partir de bagaço de malte oriundo de cervejarias para utilização como adsorvente do corante azul de metileno
(Universidade Federal de Santa Maria, 2018-07-16)
An alternative activated biochar was developed from barley malt bagasse (BMB) through pyrolysis followed
CO2 activation. The materials BMB, biochar and activated biochar (CO2–biochar) were characterized and
tested as ...