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Um controlador adaptativo robusto por modelo de referência e Super-Twisting Sliding Mode aplicado na regulação de corrente de conversores conectados à rede com filtro LCL
(Universidade Federal de Santa Maria, 2021-12-03)
This thesis presents the development of an RMRAC-STSM control structure, composed
by a robust model reference adaptive controller (RMRAC) along with an adaptive Super-
Twisting Sliding Mode (STSM) controller. A continuous ...
Análise e projeto do reator eletrônico auto-oscilante para reconhecimento de lâmpadas fluorescentes
(Universidade Federal de Santa Maria, 2014-07-14)
This work presents the analysis and design of the self-oscillating electronic ballast to fluorescent lamps detection. The electronic ballast must be able to detect and run lamps with different power ratings, according to ...
Controle hierárquico e adaptativo para aumento do desempenho operacional de reguladores de tensão em redes elétricas inteligentes
(Universidade Federal de Santa Maria, 2014-03-28)
The evolution of equipment, new functions and control algorithms, supervisory systems, automation and smart grids offer to utilities numerous conditions for improving the voltage profile and the rational use of its equipment ...
Contribuições para a modelagem, analise, projeto e controle do conversor ressonante LLC driver de LED
(Universidade Federal de Santa Maria, 2021-06-11)
This work presents several contributions to the modeling, analysis, design, and control of the LLC
resonant LED driver. Initially, the LLC resonant LED driver dynamic model accuracy is improved by
taking into account ...
Multi-objective design tool for optimizing capacitor selection in power converters based on the mission profile
(Universidade Federal de Santa Maria, 2019-09-13)
Sistemas de eletrônica de potência eficientes e confiáveis a longo prazo são um dos próximos grandes
desafios no setor de energia. A eficiência e a confiabilidade do conversor de potência são elementoschave
para expandir ...
Contribuições ao projeto de controladores robustos a variações paramétricas aplicados a conversores conectados à rede
(Universidade Federal de Santa Maria, 2021-05-12)
This Ph.D. thesis provides contributions to the design of robust current controllers
for grid-connected converters, including: i) a time-varying model to deal with the
magnetic soft saturation in the filter inductors and ...
Aplicação de LEDs na microscopia óptica ao diagnóstico da malária
(Universidade Federal de Santa Maria, 2016-07-29)
This work presents a study on the application of LED (Light Emitting Diode) to optical microscopy
in the diagnosis of malaria, in order to analyze the light emitted by the LED and
compare with the light produced by a ...
Contribuições ao controle aplicado a uma topologia híbrida para regulação de tensão em geradores de indução autoexcitados
(Universidade Federal de Santa Maria, 2017-04-24)
This doctoral thesis presents contributions to control applied to hybrid topology
for voltage regulation of self-excited induction generators in stand-alone microgeneration
systems. The generator system considers a ...
Controle hierárquico distribuído com separação de atribuições para paralelismo de UPS
(Universidade Federal de Santa Maria, 2021-06-19)
This work presents a distributed hierarchical control strategy applied to the parallelism
of UPSs. A dynamic approach with separation of concerns is proposed for the
secondary control, where a named grid forming inverter ...
Análise da estabilidade e controle de conversores CC-CC conectados em cascata
(Universidade Federal de Santa Maria, 2020-08-28)
The need to use renewable energy sources has driven the use of distributed energy generation systems. This type of system is formed by several interconnected stages that can consist of filters, converters, inverters, among ...