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Itens para a visualização no momento 1941-1950 of 3386
Estudo de caso - viabilidade de substituição do sistema de climatização de uma edificação de ensino
(Universidade Federal de Santa Maria, 2022-08-05)
This work presents a case study on the design and choice of an appropriate air
conditioning system for an educational building, aiming at thermal comfort and energy
efficiency. The sizing was accomplished according to ...
Estudo, análise, projeto e implementação de um conversor ressonante auto-oscilante
(Universidade Federal de Santa Maria, 2022-08-24)
This work presents the study, development, design and implementation of a self-oscillating
resonant converter, having as application the activation of LEDs. After a bibliographic review, aiming to evaluate the context of ...
Projeto e implementação de uma fonte assimétrica aplicada em laboratórios
(Universidade Federal de Santa Maria, 2022-02-18)
Análise e desenvolvimento de um conversor integrado com tensão de entrada universal e controle de intensidade luminosa para acionamento de leds
(Universidade Federal de Santa Maria, 2019-07-11)
This work presents the analysis and development of a new single-stage LED driver topology that integrates a boost bridgeless totem-pole converter operating as power factor correction (PFC) stage and a half-bridge LLC ...
Sistema para indicação de faltas na rede de distribuição de energia elétrica através do monitoramento de chaves fusíveis utilizando rede de comunicação LoRaWAN
(2019-12-10)
This work presents a solution for the lack of information verified by power distribution companies regarding the location of faults that occurred in its distribution system. By the monitoring of cutout fuses, it is possible ...
Análise de coincidência entre consumo e geração considerando a adesão a diferentes modalidades tarifárias associadas à geração distribuída para consumidores residenciais
(Universidade Federal de Santa Maria, 2019-12-09)
The typical Brazilian residential consumer load curve has a peak demand at the end of the day, requiring the electrical system to scale to the highest recorded load, even if it lasts for a few hours. This peak causes a ...
Classificação de faltas e seleção de fases para linhas de transmissão com meio comprimento de onda
(Universidade Federal de Santa Maria, 2019-12-04)
Growing demand for electricity around the world contributes increasingly to the expansion
of power transmission systems. Therefore, to harness the produced energy it is necessary
to establish connections between these ...
Análise de desempenho de um sistema de energia fotovoltaica localizado na cidade de Santa Maria - RS
(Universidade Federal de Santa Maria, 2019-12-18)
Currently, renewable resources have been the focus of numerous research due to concern for the environment. In this sense, there are several reasons for the implementation of renewable energy sources, including solar energy. ...
Técnica de controle e sincronismo aplicada a conversor NPC utilizando eliminação seletiva de harmônicas
(Universidade Federal de Santa Maria, 2019-12-09)
This work has the propose of using the Selective Harmonic Elimination (SHE) modulation technique applied to a three-phase converter connected to the power grid to operate at high power. Through a dq coordinates transformation ...
Análise eletromagnética e térmica de transformadores de distribuição utilizando simulações computacionais e ensaios laboratoriais
(Universidade Federal de Santa Maria, 2020-08-17)
A distribution transformer is able to operate when it attends to the electrical and mechanical requirements that norm ABNT NBR 5440 imposes. In this way, two transformer models, with the same tank volume but with geometrical ...