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Inversores ZCZVT com acoplamento magnético: síntese e análise
(Universidade Federal de Santa Maria, 2008-03-10)
This Ph. D. Thesis presents a in deep study of the mechanism of resonant transition soft-switching techniques. By means of the principles that rules the PWM resonant transition converters, a novel tool for analysis and ...
Técnicas de integração de circuitos de auxílio à comutação aplicadas a inversores e a sistemas multi-pólos
(Universidade Federal de Santa Maria, 2007-09-19)
This Ph. D. dissertation presents contributions to the investigation of soft-switching cells with integrated components, presenting three main approaches: (i) Soft-switching cells with filter coupled inductor; (ii) Integrated ...
Desenvolvimento de algoritmos para otimização da confiabilidade de redes de distribuição
(Universidade Federal de Santa Maria, 2004-12-16)
New regulations of the electricity sector have requested greater efficiency from the power utilities in the performance of their distribution systems, requiring more rigorous quality and continuity energy levels. This work ...
Aplicação de uma rede Fieldbus ao controle de reatores eletrônicos para lâmpadas HPS
(Universidade Federal de Santa Maria, 2004-02-27)
This work describes the application of a control fielbus that transmits data
over the power lines to control eletronic ballast for high-pressure sodium lamps.
Initially, a power line transceiver has been designed, so it ...
Desenvolvimento de uma rede Fieldbus para gerenciamento do sistema de distribuição de energia elétrica
(Universidade Federal de Santa Maria, 2004-01-26)
This work describes the design and implementation of a Fieldbus
dedicated to energy management using a power modem with FSK
modulation. The main characteristics of Fieldbus commonly accepted in
the market are presented ...
Reator eletrônico auto-oscilante com alto fator de potência para alimentação de quatro lâmpadas fluorescentes independentes
(Universidade Federal de Santa Maria, 2004-02-27)
This work describes a high-power-factor electronic ballast to supply four
fluorescent lamps independently. Fluorescent lamp operational aspects are
discussed, and a mathematical model to simulate the fluorescent lamp ...
Controle adaptativo robusto de tempo discreto por modelo de referência e controle repetitivo
(Universidade Federal de Santa Maria, 2003-07-18)
This work is motivated by the recent advances in the electrical-electronics and in
process control field, that extensively use microprocessing systems and require apropriated
good performance control techniques with the ...
Metodologia para localização e dimensionamento de pequenas fontes de geração distribuída em redes de distribuição a partir de uma análise multicriterial
(Universidade Federal de Santa Maria, 2004-04-29)
In the last years the distributed generation (DG) has been the objective of
researches in many countries. This generation type presents advantages in relation
to centralized generation, such as the reduction of technical ...
Análise, projeto e implementação de um inversor PWM monofásico aplicado a UPS utilizando células de comutação suave
(Universidade Federal de Santa Maria, 2002-09-23)
This thesis presents an analysis, design and implementation soft
switching inverters for UPS applications. The inverters considered are constituted
of soft switching cells, which provide zero voltage switching (ZVS) for ...
Desenvolvimento e implementação de uma micro-rede avançada de alta freqüência para integração de fontes alternativas de energia
(Universidade Federal de Santa Maria, 2006-03-17)
This Thesis presents a distributed generation system, which works as a Microgrid, suitable to integrate alternative energy sources, using a high frequency AC link (HFAC) as a means of connecting sources and loads. The ...