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Itens para a visualização no momento 61-70 of 228
Imunidade contra surtos de tensão em sistemas de iluminação
(Universidade Federal de Santa Maria, 2018-02-28)
This work presents a new point of view about electrolytic capacitor reduction in lighting
systems. While most of studies focus only in the functionality of the driver, as ripple current
and time response they don’t check ...
Sistema de supervisão local/remoto para pequenas centrais de geração elétrica
(Universidade Federal de Santa Maria, 2018-03-23)
Supervisory systems are widely used in power generation systems. They allow
operation analysis by means of a human-machine interface, which acts on the plant. In
addition, supervisory systems can be used to check operating ...
Impacto do controle Volt/VAr em redes de distribuição a partir da exploração do potencial dos inversores de sistemas fotovoltaicos
(Universidade Federal de Santa Maria, 2018-08-29)
The presence of Distributed Generation is a reality in the Brazilian electric sector, with the prospect that increasingly the participation of these sources contributes to the energy matrix of our country. Faced with this ...
Estimativa da produção de energia solar fotovoltaica com base em modelos meteorológicos
(Universidade Federal de Santa Maria, 2018-08-23)
Photovoltaic energy had an exponential growth in the last few years in Brazil and soon it
should become an important source of energy in the Brazilian electrical system. Unlike
other sources, it is not possible to control ...
Sistema eletrônico de alto fator de potência com entrada universal e controle de intensidade luminosa para o acionamento de leds
(Universidade Federal de Santa Maria, 2016-12-23)
This master thesis presents the development of a 100 W LED driver, suitable for outdoor and street lighting. In
order to match the driver and LED features, special functionalities are added to the electronic system. To ...
Análise e metodologia de projeto de conversores cc-cc isolados com comutação sob tensão nula: ponte-completa e duplo meia-ponte
(Universidade Federal de Santa Maria, 2017-08-10)
This work presents a study of an isolated DC-DC converter with zero-voltage switching (ZVS)
and phase-shifted (PS) applied to full-bridge (ZVS-PS-FB) and double half-bridge converters
(ZVS-PS-DHB). The double half-bridge ...
Circuitos de acionamento para lâmpada LED tubular utilizando conversores a capacitor chaveado
(Universidade Federal de Santa Maria, 2017-08-11)
This work presents the design, simulation and experimental development of a topology using switched capacitor to feed a LED lamp to street lighting. The designed and tested circuits aim to feed a LED tubular lamp with power ...
Heurística matemática para resposta emergencial no sistema de distribuição de energia elétrica com ilhamento imprevisto
(Universidade Federal de Santa Maria, 2018-02-23)
The main objective of the electric power utility is the uninterrupted supply of energy,
however, this is not always possible due to the actions of nature, or even from equipment
or human failures. These interruptions are ...
Concepção e desenvolvimento de um sistema eletrônico baseado em diodos emissores de luz para simulação de espectro
(Universidade Federal de Santa Maria, 2017-07-18)
This master thesis presents the conception and development of a lighting system based on lighting emitting diodes (LEDs) capable of accurately reproducing light spectra. The main motivation of this work is the development ...
Abordagem normalizada para conversores ressonantes
(Universidade Federal de Santa Maria, 2017-08-04)
Resonant converters reveal their excellence by means of the philosophy of shaping
the converters waveforms in a sinusoidal fashion, allowing soft-switching, increase
the operating frequency and reduce electromagnetic ...