Buscar
Itens para a visualização no momento 81-90 of 238
Metodologia para maximização da inserção da geração fotovoltaica nas redes de distribuição de baixa tensão
(Universidade Federal de Santa Maria, 2020-06-26)
Not long ago, the electricity system was organized into a generation system, away from consumption centers and a transmission system that carried energy for long periods until it reached the distribution system, where ...
Gerenciamento da operação de usinas virtuais em sistemas elétricos com recursos energéticos distribuídos baseada em eventos
(Universidade Federal de Santa Maria, 2020-02-20)
This doctoral thesis proposes a stochastic planning method to build multiobjective optimization
models for planning and managing virtual plants (VPP) with distributed generation, simulating
a set of features based on ...
Indicador de fragilidade operacional para priorização e substituição de baterias de chumbo ácido ventilada em subestação
(Universidade Federal de Santa Maria, 2021-01-28)
This dissertation presents a methodology for the classification and indication of
replacement of ventilated lead acid batteries used in substations through the use of
the operational fragility indicator composed of two ...
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 ...