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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 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 ...
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 ...
Conversor eletrônico de alto fator de potência para alimentação de leds aplicando a técnica input current shaper
(Universidade Federal de Santa Maria, 2017-07-31)
This work presents analysis, simulation, design and implementation of an integrated topology consisting of two static DC-DC converters to supply power LEDs, presenting high power factor. Power factor correction is essential ...
Técnica de comunicação por luz visível em um conversor rebaixador para sistemas de iluminação a LED
(Universidade Federal de Santa Maria, 2018-02-27)
This work presents the complete formulation of a synchronous buck converter operating as a
Light Emitting Diode (LED) driver for Visible Light Communication (VLC). It also presentes
a state of the art review on VLC ...
Análise em redução de processamento redundante de energia em conversores de dois estágios para iluminação Led
(Universidade Federal de Santa Maria, 2018-07-31)
This work presents mathematics analysis, simulation and experimental results for two of the isolated converters, the forward and flyback, related to its potential concerning the realization of the reduced redundant power ...
Análise da transferência de ondulação de baixa frequência em drivers de LEDs
(Universidade Federal de Santa Maria, 2019-03-01)
This work presents the analysis of low frequency ripple transmission from the bus voltage to the output current in LED drivers, in the power control stage. The buck, boost and buck-boost converters, operating in discontinuous ...
Aprimoramento da estimativa do fluxo luminoso e metodologia de projeto para sistemas de iluminação que utilizam diodos emissores de luz
(Universidade Federal de Santa Maria, 2016-03-31)
The understanding of the interrelationships among the photometrical, electrical and
thermal (photo-electro-thermal) parameters is extremely important to design lighting systems
based on light-emitting diodes (LEDs), ...
Uma metodologia de otimização para sistemas de iluminação que empregam LEDs
(Universidade Federal de Santa Maria, 2015-03-09)
This work presents an optimization methodology for lighting systems that employ LED.
Initially, this work brings a calculation methodology capable of obtaining a thermal resistance
of heat sink from their dimensions of ...
Metodologia de projeto eletrotérmico de LEDs aplicada ao desenvolvimento de sistemas de iluminação pública
(Universidade Federal de Santa Maria, 2012-07-23)
This work presents an LED electrothermal design methodology applied to a street
lighting system. The methodology aims to provide indicatives of the optimal LED operating
point for lighting systems design, considering ...