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Itens para a visualização no momento 141-150 of 182
Compensação das formas de onda distorcidas pela saturação de transformadores de corrente com auxílio da estimação de frequência
(Universidade Federal de Santa Maria, 2015-03-02)
This work presents innovative methods for detection and correction of the distorted portions of the secondary current waveforms, which occur due to the core saturation of current transformers (CTs). The detection technique ...
Co-projeto de perspectiva completa para conversores CC-CC com controlador digital
(Universidade Federal de Santa Maria, 2017-03-20)
Cyber-physical systems performance are dependents of cyber and physical domains. This work
applied a cyber-physical approach in digitally controlled power converter. This thesis proposes
a new full perspective co-design ...
Estratégias de modulação para conversores multiníveis com capacitores flutuantes
(Universidade Federal de Santa Maria, 2019-01-30)
This Thesis contributes to the modulation of the multi-level three-phase converter with
flying capacitors, for which simulations were performed to validate three different
modulation algorithms. The first one is a phase ...
Aproveitamento da energia geotérmica superficial para aumentar a eficiência de condicionadores de ar e reduzir o pico de demanda
(Universidade Federal de Santa Maria, 2018-09-12)
This doctoral thesis is a contribution to reduce the electric load in thermal conditioning of residences in order to mitigate its influence on the duck curve. It is proposed the use of air conditioning units driven by ...
Metodologia para detecção e classificação de faltas em transformadores de potência por meio da Transformada Wavelet Discreta
(Universidade Federal de Santa Maria, 2018-08-28)
This thesis presents the development of a methodology for the detection and
classification of electrical transients in power transformers, for protection purposes. For this,
we analyzed several electrical transients ...
Reconfiguração automáticas das redes de distribuição de energia elétrica com monitoramento em tempo real
(Universidade Federal de Santa Maria, 2013-09-13)
In normal operation, the reconfiguration of distribution network can reduce losses,
balance loads and improve quality indicators. The increasing use of remote controlled
equipment in power systems leads the development ...
Estudo e desenvolvimento de conversores cc-cc com elevado ganho de tensão baseados na topologia do SEPIC isolado
(Universidade Federal de Santa Maria, 2022-12-15)
This Doctoral Thesis makes a detailed study and development of topologies of dc-dc converters
with high voltage gain for photovoltaic microinverters. This requirement is because of low
voltage of photovoltaic module, ...
Metodologia de projeto de fontes ininterruptas de energia monofásicas empregando controladores de ação repetitiva auxiliar no estágio de saída
(Universidade Federal de Santa Maria, 2006-12-18)
The present doctoral thesis concentrate efforts in the consolidation of the benefits introduced by the plug-in repetitive action in the performance of pulse-width modulated
voltage source inverters. The work is focused ...
Integração de conversores estáticos aplicados a sistemas de iluminação pública
(Universidade Federal de Santa Maria, 2007-12-20)
This work presents a family of integrated electronic ballasts applied to the public lighting system. The electronic ballasts are designed to supply High-Pressure Sodium lamps according to the desired lamp operation ...
Modeling of an electro-mechanical-acoustic contactless energy transfer system based on multiphysics networks and resonant topologies
(Universidade Federal de Santa Maria, 2021-05-17)
Esta tese de Doutorado apresenta uma metodologia de modelagem para um sistema
eletro-mecânico-acústico de transferência de energia sem fio/wireless e a análise e projeto dos
conversores estáticos do sistema. Sistemas de ...