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Técnicas para otimização de conversores da família boost com alto ganho de tensão e alto rendimento aplicados à célula a combustível
(Universidade Federal de Santa Maria, 2019-02-28)
In this work, it is proposed methodologies for design optimization of high gain boost static converters
applied to fuel cells. In this aplication, two types of boost converters are evaluated.
The first one is based on ...
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 ...
Estudo, análise e projeto de sistemas magnéticos aplicados a conversores estáticos
(Universidade Federal de Santa Maria, 2020-02-10)
Given that the volumetric design of transformers and inductors is directly connected to losses, the correct prediction of these is fundamental for their optimization. With this vision, this work presents techniques for the ...
Conversores CC–CC bidirecionais para regulação série de tensão aplicados em sistemas fotovoltaicos
(Universidade Federal de Santa Maria, 2020-02-27)
This work provides some conceptual and practical contributions about the use of DC–DC power
converters connected as step-up/down series voltage regulators in string or multi-string architectures
of grid-tie photovoltaic ...
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 ...
Análise da tensão do ponto neutro para o inversor ANPC de três portas: uma abordagem vetorial
(Universidade Federal de Santa Maria, 2020-10-08)
The ANPC topology with secondary bi-directional DC port (ANPC-3P) allows the connection
of energy storage systems (ESS) directly to the topology on a secondary DC port, assigning an
additional task to the inverter. In ...
Contribuição ao estudo do conversor multinível híbrido em cascata monofásico empregado na interface entre fonte fotovoltaica, banco de baterias e rede elétrica.
(Universidade Federal de Santa Maria, 2017-08-30)
This master thesis presents an energy management strategy in order to eliminate power fluctuations
from a photovoltaic source through a single-phase cascade hybrid multilevel grid-tie
converter associated with a battery ...
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 ...
Análise comparativa de inversores multiníveis com células H-bridge conectadas em série
(Universidade Federal de Santa Maria, 2006-04-20)
This Master Thesis presents a methodology to compare different topologies and configurations of multilevel systems applied to drive medium voltage induction motors. Initially, it presents the input and output parameters ...
Análise estática normalizada e modelagem de pequenos sinais do conversor classe-e utilizando transformadores piezoelétricos
(Universidade Federal de Santa Maria, 2011-08-04)
Piezoelectric transformers (PTs) allow the design of promising power supply applications, increasing
efficiency, reducing size, facilitating the achievement of high transformation ratio, besides providing
high immunity ...