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Itens para a visualização no momento 21-30 of 32
Otimizacão da coordenação de relés de sobrecorrente direcionais em sistemas elétricos de potência utilizando a programação inteira binária
(Universidade Federal de Santa Maria, 2012-02-23)
This work aims to optimize the coordination of microprocessor-based directional overcurrent relays in power systems using Binary Integer Programming (BIP). Two new mathematical models of BIP are presented. The first ...
Automação do processo de alocação de torres de um sistema de transmissão de energia elétrica
(Universidade Federal de Santa Maria, 2022-02-14)
Estudo de ciclos de refrigeração utilizando R-744 como fluido refrigerante
(Universidade Federal de Santa Maria, 2019-12-19)
HCFCs’ fluids are the most commonly used in refrigeration cycles. However, new guidelines foresee the abandonment of such fluids for environmental reasons and the industry has again turned its attention to natural fluids, ...
Efeitos no consumo de combustível e emissão de poluentes pelo uso de altitude variável durante o voo de cruzeiro
(Universidade Federal de Santa Maria, 2020-09-18)
The growth in air traffic, especially on low-cost flight, combined with the increase in oil prices
and the growing concern with environmental impacts, increase the aeronautical sector
research for ways to reduce fuel ...
Otimização topológica de aerofólios utilizando algoritmo evolucionário bidirecional
(Universidade Federal de Santa Maria, 2021-02-10)
In this work it is presented the topological optimization of an airfoil considering compliance and
stress minimizations subjected to a volume constraint using bidirectional evolutionary structural
optimization (BESO) ...
Otimização de níveis de tensão nas redes de distribuição considerando a alocação de bancos de capacitores e reguladores de tensão.
(Universidade Federal de Santa Maria, 2011-04-11)
The reactive power and voltage level control in distribution networks are routine in a
power. The customer s voltage levels legislation, allows to the customers with voltage
levels out of the limits stipulated by Brazilian ...
Otimização de torres treliçadas de linhas de transmissão através do método teaching learning based optimization algorithm
(Universidade Federal de Santa Maria, 2022-02-09)
In the engineering field, the search for the best performance of a structure in terms of
economy, efficiency and safety is one of the main objectives. In this sense, in relation
to transmission line towers (TLT), it ...
Aplicação de um método de otimização no projeto de fornos para tratamento térmico
(Universidade Federal de Santa Maria, 2020-07-13)
The design of a heat treatment furnace can be carried out by trial and error method. However, this practice can lead to inaccurate results, as well as warping and cracking on the surfaces of materials to be heat treated. ...
Algoritmos heurísticos de otimização da proteção e manobra em redes de distribuição de energia
(Universidade Federal de Santa Maria, 2008-07-29)
The new regulations of the electricity sector have requested from the power utilities great performance
efficiency on their distribution systems, requiring more rigorous quality and continuity energy levels. In Brazil,
the ...
Análise de compensação capacitiva para a máxima transferência de energia com acoplamento indutivo
(Universidade Federal de Santa Maria, 2020-01-20)
This work deals with the study of a wireless power transmission system using loosely magnetically coupled coils. An analysis is made of the parasitic effects of the components in an equivalent circuit using a single frequency ...