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Desenvolvimento de topologias com redução do processamento redundante de energia para acionamento de leds
(Universidade Federal de Santa Maria, 2015-08-26)
This work presents the research and development of a connection method for static converters,
called Optimized Cascade, which aims to reduce the redundant power processing in
multiple stage topologies for LED driving. ...
Modulação space vector para conversores multiníveis com células assimétricas em cascata sob condições de faltas
(Universidade Federal de Santa Maria, 2015-10-09)
This Thesis proposes a Space Vector Modulation for cascaded miltilevel converters with
asymmetric cells under normal conditions and with faults in the power cells, avoiding
converter saturation as much as possible. The ...
Combinação seletiva de métodos para previsão de demanda a curtíssimo prazo em tempo real
(Universidade Federal de Santa Maria, 2015-03-06)
In transforming the current electricity network, in a so called smart grid, demand forecasting
is relevant to processes such as demand management, demand response, distributed
generation, among others. For consumers, the ...
Controle robusto baseado em desigualdades matriciais lineares aplicado a inversores conectados à rede elétrica
(Universidade Federal de Santa Maria, 2015-04-24)
This work provides as a main contribution a procedure to design robust state feedback
current controllers applied to inverters connected to the grid by means of LCL filters,
providing results which comply with performance ...
Motor ultra-sônico linear com geometria tubular
(Universidade Federal de Santa Maria, 2008-05-07)
This work presents the study on a linear ultrasonic motor with tubular geometry for linear displacements. Similar topologies, reported elsewhere, are conceived for producing rotary motions. Due to some particular characteristics ...
Avaliação da segurança da operação de sistemas elétricos de potência considerando os limites de estabilidade angular e de tensão
(Universidade Federal de Santa Maria, 2008-02-22)
This work presents new analytical and computational methods for operation security assessment of electric power systems by considering Angle and Voltage Stability Limits. In the context of Angle Stability, it was developed ...
Inversores ZCZVT com acoplamento magnético: síntese e análise
(Universidade Federal de Santa Maria, 2008-03-10)
This Ph. D. Thesis presents a in deep study of the mechanism of resonant transition soft-switching techniques. By means of the principles that rules the PWM resonant transition converters, a novel tool for analysis and ...
Desenvolvimento de uma família de reatores eletrônicos para lâmpadas fluorescentes sem eletrodos empregando a técnica de integração de conversores
(Universidade Federal de Santa Maria, 2012-11-30)
This paper presents the design and development of an electronic ballasts family
obtained through the use of the integration technique of converters for feeding the
electrodeless fluorescents lamps (EFL). This type of lamp ...
Novo conversor CC-CC integrado full-bridge-forward aplicado a uma microrrede residencial
(Universidade Federal de Santa Maria, 2013-02-07)
This Ph.D. Dissertation focuses on the proposal of a novel converter topology applied
to the connection of an energy storage system, composed of a supercapacitor bank and a
battery bank, to the dc bus of a residential ...
Projeto de conversores estáticos fazendo uso de uma metodologia de minimização de volume/perdas/custo
(Universidade Federal de Santa Maria, 2013-08-29)
This thesis presents a new optimization design methodology for power electronics
converters with volume, cost and efficiency objectives. The optimization methodology,
achieved by mathematical interactions, is based on the ...