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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 ...
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 ...
Contribuição ao estudo do acionamento avançado do motor síncrono de ímãs permanentes: abordagem baseada nos modos deslizantes de ordem superior
(Universidade Federal de Santa Maria, 2009-07-24)
This work presents a study of first and second order sliding mode controllers applied to permanent magnet synchronous motor.The aim is a theoretical study and an experimental implementation, using the DSP TMS320F2812 ...
Extração e reconhecimento de caracteres ópticos a partir do co-projeto de hardware e software sobre plataforma reconfigurável
(Universidade Federal de Santa Maria, 2008-03-07)
This work presents the implementation and analysis of a system devoted to the extraction and recognition of optical characters which is based on the hardware and software co-design methodology and built over a reconfigurable ...
Sistematização do projeto de reatores eletrônicos para alimentação de lâmpadas de vapor de sódio em alta pressão para iluminação pública
(Universidade Federal de Santa Maria, 2009-02-27)
This thesis presents an electronic ballast prototype to supply high-pressure sodium lamps used in public lighting. The goal is to develop a commercial approach able to replace the still commonly used electromagnetic ballasts, ...