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Itens para a visualização no momento 21-30 of 31
Metodologia de síntese de topologias ZVT simplificadas aplicadas a pólos PWM bidirecionais
(Universidade Federal de Santa Maria, 2009-11-27)
Among the soft-switching techniques, the zero-voltage-transition (ZVT) technique has been accepted well by the industry due its attractive characteristics, such as simplicity, low losses in the auxiliary commutation circuit ...
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 ...
Análise, modelagem e validação experimental de uma metodologia para o projeto do indutor em conversores Boost PFC
(Universidade Federal de Santa Maria, 2009-03-27)
This work presents the development of a methodology for design of inductor in singlephase PFC boost converters operating in CCM mode in agreement with international
standards IEC 61000-3-2 and CISPR 22. Such converters ...
Modelagem, projeto e implementação de um conversor isolado com um único estágio e correção do fator de potência.
(Universidade Federal de Santa Maria, 2008-04-16)
This Master Thesis presents a new analysis, modeling and design guideline for an Insulated Power Factor Corrected Single-Stage Converter. First, the operating principle is
presented which provides a better understanding ...
Metodologia de projeto de inversores para redução do custo de sistemas fotovoltaicos
(Universidade Federal de Santa Maria, 2014-02-25)
In photovoltaic systems, the lowest energy cost is not always achieved by an inverter with minimized cost or maximized efficiency. It is important to adopt methodologies that optimize the balance between system losses and ...
Análise das relações das tensões de entrada de inversores multiníveis híbridos conectados em cascata para minimizar a THD da tensão de saída
(Universidade Federal de Santa Maria, 2012-04-27)
This Master Thesis presents a study considering multilevel inverters formed from two and three level cascaded inverters.
The literature presents several papers on asymmetric multilevel inverters and most studies are related ...
Reator eletrônico para lâmpadas de descarga em alta pressão baseado no conversor biflyback inversor
(Universidade Federal de Santa Maria, 2011-07-26)
The study of the best utilization of high intensity discharge lamps deals with the great global concern with energy efficiency. Electronic ballasts are the current devices that can make the good use of high luminous efficacy ...
Análise comparativa da energia injetada na rede por inversores módulos CA utilizados em sistemas fotovoltaicos
(Universidade Federal de Santa Maria, 2013-05-29)
This Master's Dissertation aims to compare two topologies of AC Module converters, applied in photovoltaic systems. The principles of operation, the characteristic equations, the parameters found are detailed for both ...
Plataforma hardware-in-loop para ensaios automatizados de inversores conectados à rede em múltiplos ambientes e condições de operação
(Universidade Federal de Santa Maria, 2023-07-27)
With the increasing demand for renewable energy sources, the use of inverters in power systems
has rapidly grown. To ensure the safety and efficiency of inverters, it is necessary to test
them under a variety of operational ...
Plataforma para testes de leis de controle de inversores conectados à rede utilizando hardware-in-the-loop
(Universidade Federal de Santa Maria, 2023-08-23)
The use of inverters in power systems has experienced rapid growth due to the advancement of
renewable energy sources. Improving these devices is essential to ensure compatibility and integration with other systems, as ...