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Contribuições ao projeto de sistemas eólicos de efeito magnus com rastreamento da máxima potência
(Universidade Federal de Santa Maria, 2016-08-26)
This work deals with an unconventional wind energy conversion system, in which the wind turbine has rotating cylinders rather than traditional blades. These cylinders can be driven by a brushless DC motor. The turbine ...
Metodologias para modelagem de cargas de consumidores de baixa tensão considerando a integração de resposta da demanda, geração distribuída e veículos elétricos
(Universidade Federal de Santa Maria, 2017-03-03)
Accurate load modeling is a crucial task in distribution systems expansion planning. Traditionally, the load peak, which is viewed as the worst-case scenario, has been used to quantify new investment requirements. However, ...
Modulação descontínua para conversores com pernas em paralelo magneticamente acopladas
(Universidade Federal de Santa Maria, 2017-03-10)
Aiming to contribute to modulation strategies for converters with magnetically coupled
parallel legs, a new strategy of discontinuous carrier modulation is developed for this class
of converters. To clarify the strong ...
Estratégia de controle Volt/VAr Coordenado para sistemas de distribuição inteligentes
(Universidade Federal de Santa Maria, 2018-03-26)
This work presents contributions to the study and development of Voltage and
Reactive Power Control (Volt/VAr control or VVC) for intelligent distribution systems.
Currently, the use of VVC is considered one of the most ...
Estimativa de chuvas intensas em locais sem dados no Rio Grande do Sul
(Universidade Federal de Santa Maria, 2019-02-08)
The knowledge of the intense rainfall is important in the project of several engineering works, which normally, is defined from the intensity-duration-frequency relations (IDF), allowing to estimate in a simple way the ...
Hidrólise subcrítica de palha e cascas de arroz para obtenção integrada de açúcares fermentescíveis e material adsorvente
(Universidade Federal de Santa Maria, 2019-03-22)
In this research, coproducts from rice harvesting and manufacturing, such as straw and husks, were submitted to subcritical water hydrolysis in order to obtain a hydrolyzed liquid containing fermentable sugars and a solid ...
Modelagem da capacitância de elementos magnéticos para elevadas frequências e classes de isolação
(Universidade Federal de Santa Maria, 2018-08-27)
This PhD thesis presents the development of models of magnetic elements for high frequency and insulation classes. Currently, there is an increasing demand for implementation of such elements as the power electronics has ...
Estudo experimental e numérico de vigas curtas reforçadas com PRFC à força cortante
(Universidade Federal de Santa Maria, 2018-12-18)
Reinforcement systems with carbon fiber composites may be employed for restoring the strength of a structural member, or to strengthen a structure to resist increased loading due to changes in structure utilization. In ...
Novos métodos para prover segurança à comunicação no âmbito de redes elétricas inteligentes
(Universidade Federal de Santa Maria, 2018-03-23)
Information and communication technologies (ICT) incorporated into the power grid allows
the full implementation of the smart grids (SG) concept. Among the segments of the power
grid, providing this integration to energy ...
Ozônio flotação na colheita de microalgas cultivadas em efluente sanitário
(Universidade Federal de Santa Maria, 2018-09-04)
The lack of treatment of sanitary effluents causes several problems, both public health and environmental problems. And it can be reduced by using this sanitary effluent as a source of nutrients for microalgae growth. In ...