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Itens para a visualização no momento 11-20 of 53
Metodologia de projeto otimizado de conversores estáticos aplicados a sistemas fotovoltaicos
(Universidade Federal de Santa Maria, 2017-08-11)
This work proposes an optimized design methodology for static converters applied to
systems where the processed energy is discontinuous and/or variable over time. It will be
demonstrated that in these cases, it is not ...
Estudo e testes de desempenho de proteção de linhas de transmissão AC conectadas a sistemas HVDC – estudo de caso aplicado à LT Garabi2 - Santo Ângelo
(Universidade Federal de Santa Maria, 2017-07-14)
The present work it’s about an study of protection of AC transmission lines connected to high voltage direct current (HVDC) systems. First, it presents a theoretical foundation regarding the protection functions and ...
Estudo de algoritmos backstepping para o controle de correntes e estimação da velocidade rotórica em motores de indução trifásicos
(Universidade Federal de Santa Maria, 2017-06-19)
This master dissertation presents the development of current control strategies and
the development of rotor speed observers using Backstepping algorithms. The Backstepping
algorithm is a recursive method used for ...
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 ...
Planejamento da expansão de sistemas elétricos de distribuição considerando a tarifação da transmissão e aspectos de confiabilidade
(Universidade Federal de Santa Maria, 2017-05-26)
The main premise for the countries that have adopted the competition model to generation and
energy market is the decentralization of activities of the generation, transmission and distribution
of energy. In this structure, ...
Otimização do armazenamento e geração de energia a biogás visando ao gerenciamento das redes de distribuição
(Universidade Federal de Santa Maria, 2017-08-18)
The increasing use of renewable sources of distributed generation (DG) and also the perspective
of the use of energy storage systems (ESS) in distribution systems, makes it imperative that
distributors adopt measures to ...
Monitoramento remoto e seguro do campo magnético em linhas de transmissão de alta tensão
(Universidade Federal de Santa Maria, 2017-04-17)
Magnetic and electric field levels monitoring in overhead transmission lines (TL) of power
plants and substations (SEs) has been established by Brazilian Resolution 616/2014. It was
observed in procedures to carry out ...
Metodologia para análise da estabilidade angular em sistemas de distribuição com geração distribuída
(Universidade Federal de Santa Maria, 2017-08-25)
The transient stability in distribution systems has received special interest due to the continuous increase of the distributed generation connected to the network. Besides the dynamic behavior of the generation system, ...
Método para a determinação de capacitâncias parasitas em sistemas eletromagnéticos
(Universidade Federal de Santa Maria, 2017-12-19)
This Doctoral Thesis presents a detailed study about stray capacitances in electromagnetic
systems, with a special focus on inductors and transformer windings. The main objective of
research is the development of a method ...
Contribuições ao estudo de conversores CC–CC com processamento parcial de energia aplicados a sistemas fotovoltaicos
(Universidade Federal de Santa Maria, 2017-12-18)
This work presents some conceptual and practical contributions about the use of series-regulated
DC/DC converters in multi-string photovoltaic systems, which have been presented in the literature
as capable of performing ...