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Itens para a visualização no momento 101-110 of 434
Avaliação da dinâmica de nuvens e do impacto em redes de distribuição com grande participação de geração fotovoltaica
(Universidade Federal de Santa Maria, 2017-03-03)
The search for a more diverse energy matrix, to decrease the fossil fuel consumption com-bined with the enhance concern of environmental impacts results in an increasing interest on the installation of distributed generators. ...
Contribuição ao estudo de técnicas de acionamento e controle aplicadas ao gerador de relutância variável
(Universidade Federal de Santa Maria, 2017-03-06)
This master thesis presents the study of a generation system based on switched
reluctance generators. This machine presents as characteristics simple structure, mechanical
robustness, wide range of speed, low cost, high ...
Análise do impacto da manutenção em sistemas de distribuição de energia elétrica
(Universidade Federal de Santa Maria, 2017-03-01)
The new models of distribution concession contracts brought news to electric power concessionaires. By linking the renewal of concessions to the quality of service, in the midst of a period of national financial crisis, ...
Seleção multicriterial do tipo de minigeração distribuída usando casca de arroz
(Universidade Federal de Santa Maria, 2017-05-05)
The growing emphasis on conserving the environment associated with dependence on fossil fuels has stimulated the development and use of biomass as a source of renewable energy. Among the bioenergy alternatives is the rice ...
Metodologia para análise da influência de pequenas centrais de geração síncrona na margem de estabilidade de tensão
(Universidade Federal de Santa Maria, 2017-03-13)
The insertion of Distributed Generation has become a strong attraction due to its characteristic advantages, such as the reduction of losses in the energy transportation due to the lack of extensive transmission lines, ...
Modelagem das curvas tempo x corrente de elos fusíveis do tipo expulsão por meio de redes neurais artificias
(Universidade Federal de Santa Maria, 2018-08-06)
Protection studies are essential to maintain the levels of energy supply in accordance with standards
imposed by regulatory agencies. Currently, this type of study is carried out through computational
tools. Therefore, ...
Desenvolvimento de estrutura de controle para paralelismo de inversores aplicados em fontes ininterruptas de energia
(Universidade Federal de Santa Maria, 2018-08-30)
This master's thesis proposes a control structure for inverters parallelism on uninterruptible power supply (UPS) modules with low line impedance characteristics. The structure is based on instantaneous current sharing ...
Alocação estocasticamente robusta de chaves automáticas em rede de distribuição de energia elétrica
(Universidade Federal de Santa Maria, 2018-06-28)
In distribution networks planning, proper selection of quantity and position of switches
provides a significant reduction in reliability indices and operating costs. For that,
historical failure data is used. However, ...
Análise em redução de processamento redundante de energia em conversores de dois estágios para iluminação Led
(Universidade Federal de Santa Maria, 2018-07-31)
This work presents mathematics analysis, simulation and experimental results for two of the isolated converters, the forward and flyback, related to its potential concerning the realization of the reduced redundant power ...
Metodologia para análise do balanço energético usando estimador de estados e medição em tempo real
(Universidade Federal de Santa Maria, 2018-07-26)
With the advent of smart grid, it is expected a new design for operation and planning of the electrical systems, changing the way how we manage and relate to the distribution systems. The term Smart Grid is used as an ...