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Integração de conversores estáticos aplicados a sistemas de iluminação pública
(Universidade Federal de Santa Maria, 2007-12-20)
This work presents a family of integrated electronic ballasts applied to the public lighting system. The electronic ballasts are designed to supply High-Pressure Sodium lamps according to the desired lamp operation ...
Métodos e algoritmos para ajuste dos meios básicos para controle de tensão em sistemas de distribuição
(Universidade Federal de Santa Maria, 2007-11-09)
Nowadays, the quality of energy supplied to customers is an important aspect that must be taken into account in distribution systems analysis. The Brazilian national agency which regulates the distribution systems standards ...
Interação entre conversores chaveados com baixa ondulação e células de combustível
(Universidade Federal de Santa Maria, 2007-01-17)
This dissertation discusses the interaction between fuel cells and the DC-DC converter just connected across its terminals. For that, it presents a modified algorithm to represent the dynamic behavior of fuel cell stacks ...
Comparação de técnicas de controle de velocidade sensorless aplicadas a motores de indução em plataforma DSP
(Universidade Federal de Santa Maria, 2006-03-31)
This work proposes a comparative performance analysis of control and estimation techniques applied to three-phase induction motors with discrete realization, using a fixed-point digital signal processor based platform. ...
Nova metodologia de localização de regiões candidatas em imagens digitais utilizando arquiteturas reconfiguráveis
(Universidade Federal de Santa Maria, 2007-03-30)
This work involves the study and the implementation of different techniques of image processing in software and hardware , aiming the implementation of a new methodology of digital images location of candidate regions . ...
Análise e controle de gerador síncrono a ímã permanente aplicado a sistema de conversão de energia eólica
(Universidade Federal de Santa Maria, 2009-06-26)
This dissertation addresses the analysis and control of permanent magnet synchronous generators (PMSG) found in wind energy conversion system. The operation modes of the
wind turbine the current and voltage constraints ...
Análise teórica e experimental do comportamento de grandes e pequenos sinais e desenvolvimento de um novo modelo dinâmico de pequenos sinais do conversor ZVS-PSM-FB.
(Universidade Federal de Santa Maria, 2006-10-27)
This Master Thesis presents the development of a new dynamic model for the DC-DC Zero-Voltage-Switching Phase-Shift-Modulated Full-Bridge (ZVS-PSM-FB).At first, the ZVSPSM-FB converter is analyzed and the Steady-State ...
Concepção de um nó sensor/atuador sem-fio para uma rede de gerenciamento de iluminação pública
(Universidade Federal de Santa Maria, 2009-08-17)
In this thesis, changes to be done into the photoelectric relays used on street lighting systems are proposed. It is intended to improve those systems, bringing social and economical benefits. Most of street lighting systems ...
Princípio de integração de circuitos de auxílio à comutação: o estudo do caso ZVT
(Universidade Federal de Santa Maria, 2007-12-10)
The main contribution of this Thesis is the proposition of the integration concept of auxiliary commutation circuits applied to systems with several power conversion stages. Trough this concept, the reactive energy resulting ...
Instrumentação para pilhas de células a combustível do tipo PEM visando a eficiência energética
(Universidade Federal de Santa Maria, 2009-06-22)
This work aims at the development of an instrumentation prototype to monitor, control and drive a proton exchange membrane fuel cell (PEMFC) and its ancillary equipment. The
first stage of this work is related to PEMFC ...