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Itens para a visualização no momento 11-20 of 29
Proteção de transformadores de potência eclassificação de transitórios elétricos por meio da transformada wavelet discreta
(Universidade Federal de Santa Maria, 2014-02-20)
This dissertation presents the development of an algorithm for classifying
electrical transients in power transformers for protection. Initially the main transient
involving power transformers were analyzed, with a special ...
Metodologia para análise da tarifa branca e da geração distribuída de pequeno porte nos consumidores residenciais de baixa tensão
(Universidade Federal de Santa Maria, 2014-02-28)
This Master s Dissertation presents the development of a methodology that analyzes the impact of the White Tariff considering the distributed generation to low voltage residential consumers. The White Tariff has the aim ...
Estimação fasorial aplicada a relés de proteção numéricos utilizando os métodos de ajuste de curvas e redes neurais artificiais
(Universidade Federal de Santa Maria, 2014-02-21)
This dissertation proposes two methodologies for the phasor estimation on protective relays in Electrical Power Systems. Firstly, a theoretical introduction of signal processing, the structure of a protective relay and ...
Modelo teórico de gestão de energia para um frigorífico de aves
(Universidade Federal de Santa Maria, 2014-12-06)
The present study proposes a theoretical management system for energy efficiency, with the aim of guiding professionals or companies in the fridge branch to seek energy efficiency of their processes and may, after the ...
Implementação de interface de comunicação seguindo Norma IEC 61400-25 para aerogeradores
(Universidade Federal de Santa Maria, 2014-12-19)
With the fast economic development of the country, the energy consumption tends to increase significantly for the next years. Because of that, it becomes important to search for new alternatives technologies that are ...
Sistema de automação residencial de baixo custo com uso de rádio frequência
(Universidade Federal de Santa Maria, 2014-12-15)
This work presents a proposal of a home automation system, which will use as human-machine (HMI) interface a mobile device with Android operating system. This mobile/tablet communicates with a central (controller) installed ...
Estudo, análise e implementação de uma metodologia para otimização de rendimento em sistemas compostos por conversores em paralelo
(Universidade Federal de Santa Maria, 2014-09-05)
This PhD Dissertation proposes a new methodology for efficiency maximization in systems
comprising parallel converters. For a given number of system converters, their maximum
power and their efficiency curves, the proposed ...
Uma metodologia para a identificação de perdas não técnicas em grandes consumidores rurais
(Universidade Federal de Santa Maria, 2014-09-26)
Irrigation of large agricultural areas represents a significant portion of energy consumption in food producing countries. The electric power of irrigation pumps in rice crops, for example, may exceed 800 HP, while these ...
Análise e projeto do reator eletrônico auto-oscilante para reconhecimento de lâmpadas fluorescentes
(Universidade Federal de Santa Maria, 2014-07-14)
This work presents the analysis and design of the self-oscillating electronic ballast to fluorescent lamps detection. The electronic ballast must be able to detect and run lamps with different power ratings, according to ...
Controle hierárquico e adaptativo para aumento do desempenho operacional de reguladores de tensão em redes elétricas inteligentes
(Universidade Federal de Santa Maria, 2014-03-28)
The evolution of equipment, new functions and control algorithms, supervisory systems, automation and smart grids offer to utilities numerous conditions for improving the voltage profile and the rational use of its equipment ...