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Contribuição ao controle sensorless de motores síncronos de ímãs permanentes
(Universidade Federal de Santa Maria, 2019-12-05)
This thesis presents contributions to sensorless control for permanent magnet synchronous
motors. A maximum torque per ampere strategy is used to generate the current
control reference in synchronous reference frame. ...
Impactos das atividades antrópicas na qualidade da água da bacia hidrográfica do rio Vacacaí Mirim – RS
(Universidade Federal de Santa Maria, 2019-08-02)
This study was carried out to analyze the impacts of anthropogenic activities on the water quality of the Vacacaí Mirim river basin, located in the municipality of Santa Maria - RS, which is a tributary of the dam (or ...
Ferramenta computacional para auxiliar na redução de custos com energia elétrica
(Universidade Federal de Santa Maria, 2019-08-30)
Finding alternatives to reduce electricity costs is important, even more so if they are available on a single platform, and can be analyzed separately or together, quickly and practically, indicating accurate results. This ...
Estudo de viabilidade econômica e socioambiental do etanol super-hidratado como combustível para mobilidade e geração de energia
(Universidade Federal de Santa Maria, 2019-03-11)
Fossil fuels (gasoline and diesel) are largely used as primary energy source for mobility and stationary power generation. Meanwhile, their use has a negative impact on Greenhouse Gas (GHG) emission, and maintains the ...
Deformações e modo de ruptura em prismas de blocos de concreto: análise experimental com extensometria e correlação de imagem
(Universidade Federal de Santa Maria, 2019-12-06)
Evaluating deformations that constituent materials of structural masonry suffer has been the focus of researchers around the world. Structural masonry is a structural system that has a behavior difficult to predict because ...
Avaliação da angularidade de agregados miúdos de diferentes litologias para uso em pavimentação
(Universidade Federal de Santa Maria, 2019-08-30)
Aggregates are of great importance in the composition of asphalt concrete mixtures (AC) occupying a volume between 80 and 90% of the total volume, where angularity interferes with the performance of asphalt coatings. This ...
Construção de modelos matemáticos para processos fermentativos – avaliação de efeitos das condições de cultivo
(Universidade Federal de Santa Maria, 2019-10-04)
The mathematical modeling of fermentative processes is presented as a tool for improving and understanding of such processes, which has the main objective to predict predicting the dynamics of the process. Besides, the ...
Classificação de eventos em monitoramento NILM de cargas elétricas residenciais utilizando rede neural convolucional
(Universidade Federal de Santa Maria, 2019-10-22)
In the context of the expected advances with the implementation of Smart Grids, enabling the modernization of the electricity billing system and making the management of residential electric power systems attractive, the ...
Metodologia para previsão de carga no horizonte de curto prazo utilizando redes neurais
(Universidade Federal de Santa Maria, 2019-08-28)
Competitiveness and the insertion of new technologies in the electricity sector now condition companies
to find ways to improve the quality of their services and ensure profitability. The short-term load
forecasting ...
Metodologia de controle Volt/Var coordenado para redes de distribuição a partir de lógica heurística
(Universidade Federal de Santa Maria, 2019-10-31)
The reactive power management and voltage control enable voltage profile
improvements. Maintain the voltage value within the appropriate ranges requires efficient
techniques that consider joint and coordinated operation ...