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Itens para a visualização no momento 151-160 of 184
Princípio de integração de circuitos de auxílio à comutação: o estudo do caso ZVT
(Universidade Federal de Santa Maria, 2007-12-10)
The main contribution of this Thesis is the proposition of the integration concept of auxiliary commutation circuits applied to systems with several power conversion stages. Trough this concept, the reactive energy resulting ...
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 ...
Desenvolvimento de uma família de reatores eletrônicos para lâmpadas de multivapor metálico empregando a técnica de conexão diferencial de conversores CC/CC
(Universidade Federal de Santa Maria, 2009-02-25)
This work presents and analyzes a new family of electronic ballasts to supply metal halide lamps applied to interior lighting systems. These lamps present the best light quality among the high intensity discharge lamps, ...
Contribuição ao controle de máquinas de vibração eletrodinâmicas
(Universidade Federal de Santa Maria, 2009-03-20)
This work presents contributions to the sinusoidal acceleration control of electrodynamic shakers applied in vibration testing. Considering the importance of sine tests to identify critical frequencies of operation and to ...
Fontes CA de potência: contribuição ao estudo e ao desenvolvimento de topologias híbridas
(Universidade Federal de Santa Maria, 2012-12-20)
In this thesis an study of AC Power Source (ACPS) topologies that guarantee the synthesis
of high quality voltage waveforms (in comparison to the reference signal) without
penalizing the system efficiency is carried out. ...
Alocação de canais para roteamento geográfico em redes de sensores e atuadores sem fio empregando a teoria dos jogos
(Universidade Federal de Santa Maria, 2012-05-25)
Wireless sensor and actuator networks are expected to grow quickly in size due to the
decreasing cost of nodes. For such large scale networks, the geographic routing algorithm
is a suitable approach. It finds a route for ...
Seleção de sistemas de geração de energia elétrica a partir de resíduos sólidos urbanos: uma abordagem com a lógica difusa
(Universidade Federal de Santa Maria, 2012-06-19)
Sustainability is becoming a major driving force in energy policy, leading to the development of different strategies and projects. Many of these strategies are related to the application of novel methodologies for selecting ...
Modelagem estocástica em usinas virtuais de energia utilizando transformada de incerteza
(Universidade Federal de Santa Maria, 2019-12-19)
The increase in distributed generation (DG) participation is a reality, influencing the way it
generates, distributes and consumes electricity. Virtual Power Plant (VPP) will play an
important role in integrating ...
Metodologia para geração e uso de energia elétrica de fontes renováveis com foco em tecnologias disruptivas e valores socioculturais locais
(Universidade Federal de Santa Maria, 2018-08-24)
This thesis was carried out with the purpose of creating a methodology to define the composition of the local energy use and to generate electric energy through the complementarity of the sources of renewable energies, ...
Estimação da seção em falta e processamento de alarmes em sistemas de potência utilizando um sistema híbrido fundamentado na heurística construtiva e na programação inteira
(Universidade Federal de Santa Maria, 2012-09-21)
This work proposes a methodology which is able to accomplish alarms processing and to
estimate fault section in electrical power systems. The purpose is to filter alarms generated
during a shutdown and indicate which ...