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Conversores multiníveis modulares: contribuições ao estudo e ao desenvolvimento de sistemas de controle distribuídos
(Universidade Federal de Santa Maria, 2017-10-05)
This doctoral thesis presents contributions to the study and development of distributed
control systems applied to the Modular Multilevel Converter (MMC) operating
with a high number of submodules (SMs), which is the ...
DIFMA: firewall distribuído com ênfase na interoperabilidade entre aplicações no contexto das redes elétricas inteligentes
(Universidade Federal de Santa Maria, 2017-08-16)
The Electric Power System (EPS) has been improved in recent years, aiming at the implementation
of Smart Grids (SG). For this, it is essential to integrate information technologies
and bidirectional communication networks ...
Metodologia para análise técnica e econômica para atendimento de consumidores rurais incluindo GD
(Universidade Federal de Santa Maria, 2017-09-25)
This work presents a methodology for technical and economic analysis for the attendance of residential loads, with different demands and located in the rural area, with the use of distributed generation sources that can ...
Controle ressonante aplicado à redução de capacitância de barramento em conversores com estágios de potência integrados para alimentação de LEDs a partir da rede CA
(Universidade Federal de Santa Maria, 2017-08-18)
This thesis presents a new methodology to reduce bus capacitors in electronic systems with integrated power stages, applied to the LED driver. This reduction is proposed aiming to replace the traditional electrolytic ...
Lógica fuzzy para avaliação de eficiência energética em sistemas de irrigação de lavouras de arroz
(Universidade Federal de Santa Maria, 2017-03-24)
Energy efficiency plays an important role in electric power systems, since a small percentage increment in efficiency may lead to significant financial and energy savings. In agricultural-based economy countries, large ...
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 ...
Estudo comparativo entre semicondutores de silício e nitreto de gálio em circuitos de acionamento de leds
(Universidade Federal de Santa Maria, 2017-03-03)
This dissertation presents a comparative study about the performance of silicon (Si) and gallium nitride (GaN) semiconductors in drivers for light emitting diodes. Hereby, it is expected to provide the theoretical background ...
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 ...