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Método para estimação da distância de faltas de alta impedância em redes de distribuição de energia elétrica considerando diferentes tipos de solo
(Universidade Federal de Santa Maria, 2017-06-30)
This work proposes a time-domain methodology to locate high impedance faults in overhead distribution systems. One of the innovative aspects of the method is the proposition of a single mathematical model to represent the ...
Remoção de coliformes e Ascaris lumbricoides em sistema de wetland construído de fluxo vertical
(Universidade Federal de Santa Maria, 2017-10-27)
According to WHO (WHO, 2011), about 1.8 million people die from intestinal gastro diseases, mostly caused by viruses, bacteria, protozoa and helminths. This work aimed to evaluate the removal of coliforms and Ascaris ...
Compósito à base de talos de girassol: uma solução de produção mais limpa para isolamento térmico
(Universidade Federal de Santa Maria, 2017-05-30)
The increase in consumption of renewable natural sources urged by the population growth and the demand for goods and services, associated with social and governamental demands towards sustainability, motivates the development ...
Abordagem normalizada para conversores ressonantes
(Universidade Federal de Santa Maria, 2017-08-04)
Resonant converters reveal their excellence by means of the philosophy of shaping
the converters waveforms in a sinusoidal fashion, allowing soft-switching, increase
the operating frequency and reduce electromagnetic ...
Metodologia de projeto otimizado de conversores estáticos aplicados a sistemas fotovoltaicos
(Universidade Federal de Santa Maria, 2017-08-11)
This work proposes an optimized design methodology for static converters applied to
systems where the processed energy is discontinuous and/or variable over time. It will be
demonstrated that in these cases, it is not ...
Análise do desempenho de sistemas fotovoltaicos aplicados à edificação
(Universidade Federal de Santa Maria, 2017-08-25)
The use of renewable energy boosts economic growth combined with sustainable development. Photovoltaic solar energy generated from solar radiation is a renewable source that contributes to this. The building applied ...
Análise do desempenho de dutos enterrados para arrefecimento de uma habitação na zona bioclimática 2
(Universidade Federal de Santa Maria, 2017-08-31)
In the face of broad discussions about sustainable development, energy efficiency and bioclimatic architecture, more and more actions are needed to enable energy saving in civil construction. In order to do this, it has ...
Estudo e testes de desempenho de proteção de linhas de transmissão AC conectadas a sistemas HVDC – estudo de caso aplicado à LT Garabi2 - Santo Ângelo
(Universidade Federal de Santa Maria, 2017-07-14)
The present work it’s about an study of protection of AC transmission lines connected to high voltage direct current (HVDC) systems. First, it presents a theoretical foundation regarding the protection functions and ...
Desenvolvimento de adsorventes de nanofibras de quitosana/nylon 6 e tanino/nylon 6 por Forcespinning para remoção de cromo em meio aquoso
(Universidade Federal de Santa Maria, 2017-08-25)
New nanofiber materials composed of chitosan/nylon 6 and tannin/nylon 6 were prepared by the Forcespinning method and were used as adsorbents for the removal of chromium VI from aqueous solutions. Under optimum experimental ...
Estudo de algoritmos backstepping para o controle de correntes e estimação da velocidade rotórica em motores de indução trifásicos
(Universidade Federal de Santa Maria, 2017-06-19)
This master dissertation presents the development of current control strategies and
the development of rotor speed observers using Backstepping algorithms. The Backstepping
algorithm is a recursive method used for ...