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Projeto de reatores eletronicos para hid baseado no conversor chopper AC
(Universidade Federal de Santa Maria, 2007-08-24)
This thesis proposes a design of a power supply for high-pressure discharge lamps based on a high efficiency and high power factor electronic ballast, without exciting the
intrinsic acoustic resonance. The ballast consists ...
Metodologia para a análise dos efeitos da geração distribuída sobre as características operacionais dos sistemas de distribuição utilizando técnicas multicriteriais
(Universidade Federal de Santa Maria, 2007-11-08)
Nowadays, the Brazilian electric systems need the development of new researches and tools, in order to obtain a logic solution to maintain and improve the reliability and the quality of the power delivered to customers. ...
Contribuições ao estudo de conexão de geração eólica à rede elétrica
(Universidade Federal de Santa Maria, 2007-08-24)
Distribution systems have not been designed to receive distributed generation (DG) units. The electric energy injection in these systems is safe and reliable if the characteristics regarding of DG interconnection in ...
Desenvolvimento de conversores estáticos para sistemas fotovoltaicos autônomos
(Universidade Federal de Santa Maria, 2007-07-12)
This work presents a new energy conditioning system for application in stand-alone photovoltaic systems with battery bank. Firstly, the characteristics of solar photovoltaic energy, the modeling of a photovoltaic cell and ...
Sistema de iluminação distribuída utilizando LED's acionados por dois conversores flyback integrados
(Universidade Federal de Santa Maria, 2007-07-20)
This dissertation describes the design and implementation of an emergency lighting system using Light Emitting Diodes (LED s). The system is composed by two integrated converters working as battery charger and LED s ...
Métodos e algoritmos para ajuste dos meios básicos para controle de tensão em sistemas de distribuição
(Universidade Federal de Santa Maria, 2007-11-09)
Nowadays, the quality of energy supplied to customers is an important aspect that must be taken into account in distribution systems analysis. The Brazilian national agency which regulates the distribution systems standards ...
Interação entre conversores chaveados com baixa ondulação e células de combustível
(Universidade Federal de Santa Maria, 2007-01-17)
This dissertation discusses the interaction between fuel cells and the DC-DC converter just connected across its terminals. For that, it presents a modified algorithm to represent the dynamic behavior of fuel cell stacks ...
Nova metodologia de localização de regiões candidatas em imagens digitais utilizando arquiteturas reconfiguráveis
(Universidade Federal de Santa Maria, 2007-03-30)
This work involves the study and the implementation of different techniques of image processing in software and hardware , aiming the implementation of a new methodology of digital images location of candidate regions . ...