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Análise, projeto e desenvolvimento de sistemas multiníveis híbridos
(Universidade Federal de Santa Maria, 2005-03-21)
This Ph.D. Dissertation presents contributions to the study of hybrid multilevel systems, analyzing several issues that compose this system, such as: topological variations
of the output inverter stage and input rectifier ...
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 ...
Novo conversor CC-CC integrado full-bridge-forward aplicado a uma microrrede residencial
(Universidade Federal de Santa Maria, 2013-02-07)
This Ph.D. Dissertation focuses on the proposal of a novel converter topology applied
to the connection of an energy storage system, composed of a supercapacitor bank and a
battery bank, to the dc bus of a residential ...
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 ...
Contribuições ao estudo de conversores CC–CC com processamento parcial de energia aplicados a sistemas fotovoltaicos
(Universidade Federal de Santa Maria, 2017-12-18)
This work presents some conceptual and practical contributions about the use of series-regulated
DC/DC converters in multi-string photovoltaic systems, which have been presented in the literature
as capable of performing ...
Inversor multiníveis quasi-Z-source com fonte CC única e compartilhamento de potência ativa entre os módulos
(Universidade Federal de Santa Maria, 2019-07-26)
Due to its ability to provide Maximum Power Point Tracking (MPPT) control and independent
regulation of the DC bus voltage, this makes the inverter quasi-Z-Source (qZS) an attractive
candidate for applications in ...
Modelagem eletrotérmica e caracterização de elementos parasitas de placas de circuito impresso de conversores estáticos CC/CC
(Universidade Federal de Santa Maria, 2021-08-11)
This doctoral thesis presents the development of an analythical method to characterize
the parasitic elements and surface temperatures in a synchronous boost power converter.
Initially is presented the bibliography review ...
Emprego de um comutador eletrônico de taps para regulação de tensão em redes elétricas a partir do modelo de carga
(Universidade Federal de Santa Maria, 2018-08-31)
This doctoral thesis proposes a method for regulating the secondary voltage of distribution systems
based on the identification of ZIP models of the load (constant impedance, constant current and
constant power) at the ...
Metodologia de projeto do conversor DAB aplicado a transformadores de estado sólido
(Universidade Federal de Santa Maria, 2014-08-01)
This thesis presents a design methodology for the dual active bridge converter, that includes the influence of the nominal phase-shift angle in the behavior of the DAB converter for entire power and voltage ranges. The ...
Microinversores baseados na topologia meia-ponte isolada alimentada em corrente
(Universidade Federal de Santa Maria, 2018-07-25)
The Microinverter is an inverter sized to meet individual solar panels, usually consisting of two stages, one DC-DC stage and another CC-AC stage. For the first stage of the DC link microinverter, the isolated current-fed ...