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Modelagem e controle de um sistema híbrido de microgeração empregando o inversor de fonte dividida
(Universidade Federal de Santa Maria, 2021-08-09)
This master’s thesis deals with the development of modeling and a control strategy for a hybrid
renewable energy microgeneration system hydro-PV employing a three-phase three-leg Split-
Source Inverter (SSI). Integration ...
Veículos elétricos em órgãos públicos: metodologia para substituição gradual da frota a combustão por veículos elétricos
(Universidade Federal de Santa Maria, 2021-08-28)
The market for electric vehicles (EV) in Brazil is still insignificant when compared to the existing fleet in countries in Europe, China and the United States, where there has been significant growth in recent years. Brazil ...
Análise da estabilidade de conversores conectados a redes elétricas com baixo SCR
(Universidade Federal de Santa Maria, 2021-07-22)
This Ph.D. thesis presents an analysis on the influence of the synchronism system
on three-phase converters connected to weak grid combining state space approaches
and matrix transfer functions. The generation system ...
Produção de biopolímeros fúngicos a partir da fermentação submersa de Phoma dimorpha
(Universidade Federal de Santa Maria, 2021-01-29)
Research with fungi is growing due to the possible bioproducts from its cultivation, as well as its different applicability. Fungal biopolymers can be produced from the fermentation process of these microorganisms. Alternative ...
Pirólise de resíduos cervejeiros para a produção de adsorventes
(Universidade Federal de Santa Maria, 2020-02-13)
Contamination of water by organic compounds can cause damage to the environment and to humans. Adsorption is a promising process for removing these pollutants. In addition, the adsorbents used can be regenerated. Agricultural ...
Pré-tratamento de casca de arroz utilizando solventes eutéticos (CLC: glicerol e CLC: ureia) e hidrólise subcrítica visando à obtenção de açúcares
(Universidade Federal de Santa Maria, 2021-05-04)
In this research, the rice husks were submitted to pretreatments with deep eutectic
solvents in order to enrich the cellulose content and reduce the lignin contents. Four
mixtures of deep eutectic solvents were evaluated, ...
Prospecção tecnológica em base de patentes: análise de tendências de tecnologias que empregam a radiação solar para produção de energia
(Universidade Federal de Santa Maria, 2020-02-28)
The increased concern for the environment, coupled with the high cost of fossil fuels makes humanity look for new means of generating energy, different from traditional methods using non-renewable sources. The way found ...
Adsorção de níquel (II) usando leito fixo de carvão ativado em condições subcríticas
(Universidade Federal de Santa Maria, 2020-02-27)
In the present work, the use of subcritical conditions in the nickel adsorption process on activated carbon in a fixed bed was investigated in the aqueous medium, with variation of the values for different pressure (from ...
Potencial de hidróxidos duplos lamelares de Zn-Al e Mg-Fe para adsorção de 2-nitrofenol
(Universidade Federal de Santa Maria, 2020-02-28)
Two Zn-Al and Mg-Fe layered double hydroxides (LDH) were synthesized by coprecipitation method in order to increase the adsorption potential of 2-nitrophenol (2-NP). Both adsorbents were characterized by the techniques of ...
Viabilidade do ambiente de contratação livre em um órgão público
(Universidade Federal de Santa Maria, 2020-02-28)
This work has as purpose to demonstrate the study about economic viability
for reduction of associated costof energy from Brazilian public agents through the
migration from Regulated Contract Environment into Free Contract ...