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Itens para a visualização no momento 11-20 of 143
Método para detecção, identificação e classificação de erros em redes de distribuição por meio do estimador de estados e índices de desvio
(Universidade Federal de Santa Maria, 2020-09-25)
The development of new technologies, needs and concepts, have led to numerous contributions
to several fields of knowledge, one of which is the Electric Power Systems. Contained in this
area, the Electricity Distribution ...
Metodologia de análise térmica e hidráulica em transformadores de potência
(Universidade Federal de Santa Maria, 2020-02-27)
The power transformers have a high importance for the eletric power system, allowing the transmission
of huge amounts of energy for big lengths and reduces losses. Althought the transformers
have a high eficiency, a small ...
Modelo de cálculo de perdas por comutação e método de seleção de tecnologias de transistores FET aplicados a conversores estáticos
(Universidade Federal de Santa Maria, 2020-02-07)
This dissertation presents an analytical model to assist in the calculation of switching losses and
a methodology for selecting MOSFETs that with breakdown voltages greater than 100 V. The
model was developed based on ...
Desenvolvimento de sistemas de controle para motores de ímãs permanentes para tração de veículos elétricos
(Universidade Federal de Santa Maria, 2020-02-27)
This master thesis presents the development of an experimental setup to drive
and control of permanent magnet synchronous motors with external rotor. The main
characteristics of these electric motors are related to their ...
Metodologia para classificar redes de distribuição em categorias conforme NFPA 70E-2018 e cálculos de energia incidente do guia IEEE 1584-2018
(Universidade Federal de Santa Maria, 2020-08-31)
This work presents a methodology to classify overhead medium voltage electric power
distribution networks into categories for the selection of Personal Protective Equipment
(PPE) in live line activities. A category of ...
Emprego de redes neurais artificiais para predição de temperatura de topo de óleo e perda de vida útil em transformadores de potência
(Universidade Federal de Santa Maria, 2020-09-24)
The precise temperature prediction in power transformers allows a better use of its nominal capacity, extending the equipment's useful life and strategic planning based on the expected future operating conditions. The ...
Reconfiguração de redes de distribuição considerando tarifas locacionais dos sistemas de transmissão
(Universidade Federal de Santa Maria, 2020-07-22)
The reconfiguration of distribution networks has been addressed in numerous scientific studies,
developing or improving algorithms, using efficient techniques to deal with the problem, seeking mainly
to mitigate: the ...
Planejamento multiobjetivo otimizado de recursos energéticos distribuídos aplicando o método strength pareto evolutionary algorithm 2
(Universidade Federal de Santa Maria, 2020-08-07)
The diffusion of distributed energy resources (DER) in the electric energy distribution systems in Brazil, outcomes in the perception, through the Electric Sector agents, of a set of benefits that these technologies promote ...
Avaliação dos efeitos da tarifa horária para consumidores rurais utilizando a geração fotovoltaica e/ou biomassa
(Universidade Federal de Santa Maria, 2020-02-18)
Low Voltage (LV) consumers are considered the most responsible for loading the electrical systems during peak hours by, increasing the expansion costs of the distribution system. To stimulate the efficient use of electricity, ...
Detecção de faltas entre espiras em geradores de fase dividida: uma abordagem baseada em morfologia matemática
(Universidade Federal de Santa Maria, 2021-01-15)
The stator of Synchronous Generator is susceptible to different types of failures, short circuits and
abnormal operating conditions. Among the defects, we can mention the single-phase, two-phase, threephase
faults and ...