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Procedimentos de projeto de controladores robustos baseados em otimização por enxame de partículas e desigualdades matriciais lineares para conversores conectados à rede
(Universidade Federal de Santa Maria, 2024-02-26)
This work presents design procedures for robust optimized state feedback current
controllers for grid-connected converters with LCL filter operating with uncertain grid
inductances. The proposed procedures are based on ...
Método para detecção de falta de arco elétrico serie no lado CC de sistemas fotovoltaicos
(Universidade Federal de Santa Maria, 2024-02-16)
With the growth of photovoltaic (PV) installations, there is an associated increase in the risk
of fire due to faults on the DC side. In this context, this work proposes and implements
an algorithm based on Wavelet Packet ...
Modernização dos sistemas de propulsão, geração e alimentação da viatura Leopard 1 A5 utilizando células a combustível
(Universidade Federal de Santa Maria, 2024-03-04)
The electrification of passenger vehicles, which has already reached commercial levels, has brought about significant changes in usage, supply, maintenance, and lifecycle compared to Internal Combustion Engine-powered ...
Análise numérica de estruturas de no de pórtico em concreto armado considerando dano e plasticidade
(Universidade Federal de Santa Maria, 2024-05-21)
Joints are volumes located in the region of competition between beams and columns. They
participate in the distribution of vertical and horizontal loads, being subject to high shear
forces and high bending moments. Its ...
Projeto de bloco, acionamento de válvulas e sistema de lubrificação para motor monocilindro de pesquisa
(Universidade Federal de Santa Maria, 2024-04-04)
The new phases of PROCONVE regulations make vehicle emissions homologation a challenge. In this context, a promising technology is ultra-high pressure direct injection (UHPDI), which allows late injection, bringing benefits ...
Detecção de ilhamento em sistemas de transmissão com geração eólica conectado ao sistema interligado nacional
(Universidade Federal de Santa Maria, 2023-06-30)
With the increase in renewable energy sources today, some undesirable events occur, one that we can mention is the islanding of these sources. Considering this type of occurrence in wind farm X, where it was verified twice ...
Mapeamento, diagnóstico e nível de maturidade do processo de manutenção praticado por uma empresa do ramo de supermercados
(Universidade Federal de Santa Maria, 2023-08-09)
The first records of food trade occurred in a distant period, in the form of barter.
Over the years, mass production encouraged the development of small
establishments that later gave rise to modern supermarkets. The ...
Amorfização de ilmenita para preparação de material adsorvente poroso e sua aplicação na remoção de corante em ambiente aquoso
(Universidade Federal de Santa Maria, 2024-01-31)
In this work, natural ilmenite (ILM) was amorphized by alkaline fusion (I550) with NaOH at 550 ºC and alkaline activation (I60) at 60 ºC. The materials ILM, I60 and I550 were characterized through XRD, FTIR, SEM/EDS and ...
Metodologia heurística de alocação e dimensionamento de PV-STATCOM em sistemas de distribuição de média tensão: redução do investimento inicial e regulação dos níveis de tens
(Universidade Federal de Santa Maria, 2024-04-05)
The participation of Distributed Generation (DG) in the electrical distribution system has been
growing in recent years, especially photovoltaic DG (FVGD). FVGD benefits the electrical
system and the environment, but it ...
Simulação de um incêndio real com os programas Fire Dynamics Simulator© (FDS) e Pyrosim©
(Universidade Federal de Santa Maria, 2024-04-30)
Computer simulation of buildings in a fire situation can help design passive and active protection measures for buildings, and support forensic investigation work in accidents. In this context, the present work aims to ...