Buscar
Itens para a visualização no momento 861-870 of 17926
Análise e projeto de uma topologia de dois estágios otimizada aplicada à iluminação pública com leds
(Universidade Federal de Santa Maria, 2012-07-10)
This work presents the analysis and implementation of a connection between two power converters, applied to street lighting with LEDs. This connection is called optimized
cascade. The main idea of this connection is the ...
Análise e projeto do conversor buck intercalado para alimentação de lâmpadas de descarga em alta pressão de alta potência
(Universidade Federal de Santa Maria, 2012-02-29)
This work presents a detailed analysis about the interleaved buck converter applied
to electronic ballasts to supply high power HID lamps, assuming the input voltage as a
PFC stage output.
As the output capacitor has a ...
Projeto e desenvolvimento de um sistema de gerenciamento remoto sem fio aplicado a iluminação
(Universidade Federal de Santa Maria, 2012-08-17)
Today's light sources are expanding the application field of lighting systems for decorative,
commercial and artistic purposes, in many areas, such as parks, gardens or parking.
This paper presents the development of a ...
Análise e projeto do sistema de controle de um módulo de potência com conversores em cascata aplicado a transformadores de estado sólido
(Universidade Federal de Santa Maria, 2016-07-29)
This master thesis present the analysis of a power module with cascaded converters
applied to solid state transformers. The power module is built by an AC-DC input stage,
constituted by full-bridge topology, an DC-DC ...
A dimensão ambiental como objeto da ação extensionista na assessoria técnica, social e ambiental (ATES) do RS
(Universidade Federal de Santa Maria, 2012-11-01)
The environmental theme comes every day receiving attention and stands today as a
challenge for public policy and an important variable to be considered in the projects
of agrarian reform settlements and other rural ...
O PROJETO ESTADUAL DE REFORMA AGRÁRIA E O CASO DO ASSENTAMENTO CARLOS MARIGHELLA-SANTA MARIA-RS: ENTRE O IDEAL E O POSSÍVEL
(Universidade Federal de Santa Maria, 2010-08-25)
This paper aims to analyze the state agrarian reform proposal through land reform policy of the Olívio Dutra s government (1999-2002), as well as recovering the main issues concerning implementation, development and destiny ...
Saúde do trabalhador e economia solidária: aproximações no projeto Esperança/Cooesperança
(Universidade Federal de Santa Maria, 2010-08-31)
Solidarity economy is a form of social organization based on collaborative work and
networking, it s an alternative economy that became a reality amid the current capitalist
logic. It s a proposal that provides a new ...
Impacto técnico e econômico da energia solar fotovoltaica em prédios públicos através de geração distribuída
(Universidade Federal de Santa Maria, 2016-03-28)
Photovoltaic solar energy (PV) grows exponentially, since 2012 reaching levels of over 100 GWp installed worldwide. In this area the Brazilian industry just awakened through auctions, mainly aimed to Distributed Generation ...
Sistema automatizado para ensaio de inversores fotovoltaicos conectados à rede em acordo com normatização brasileira
(Universidade Federal de Santa Maria, 2016-08-03)
This document aims to develop an automated test platform for grid-connected photovoltaic inverters.
Therefore, it was conducted a study of European, North American and Brazilian standards related in
order to compare the ...
Fonte ininterrupta de energia trifásica de alto desempenho sem transformador com dupla funcionalidade do estágio de entrada e sistema de controle digital
(Universidade Federal de Santa Maria, 2016-07-21)
This master s thesis proposes a three-phase transformerless double-conversion UPS with digital control system and reduced overall cost. The topology is composed of an input stage, a battery bank, an inverter, an auxiliary ...