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Análise e projeto de conversores estáticos para sistemas fotovoltaicos parcialmente sombreados
(Universidade Federal de Santa Maria, 2016-08-29)
This work presents a study and analysis of photovoltaic systems subject to partial
shading, where the main consequence is the reduction of its energy production. To mitigate
this problem, it is proposed a new photovoltaic ...
Problemas de roteamento de veículos com dependência temporal e espacial entre rotas de equipes de campo
(Universidade Federal de Santa Maria, 2016-08-26)
This thesis presents two new routing problems, both with objective functions focused on
relative positioning of teams during the routing horizon. The relative positioning results in
temporal and spatial dependencies among ...
Processador inteligente de alarmes e modelos de programação matemática para diagnóstico de faltas em sistemas elétricos de potência
(Universidade Federal de Santa Maria, 2016-06-24)
This thesis proposes an Intelligent Alarm Processor for fault diagnosis in electrical power systems. The objective is to develop a methodology for automatic fault analysis using reported alarms from Supervisory Control and ...
Topologia híbrida e métodos de controle aplicados à regulação de tensão de geradores de indução auto-excitados
(Universidade Federal de Santa Maria, 2016-05-23)
This doctoral thesis deals with the study, analysis and development of a new hybrid
topology for voltage regulation of stand-alone microgeneration systems employing
self-excited induction generators. The hybrid topology ...
Detecção de ilhamento em sistemas de distribuição com geração síncrona distribuída
(Universidade Federal de Santa Maria, 2016-02-26)
Nowadays due to the increase of renewable energy sources, Distributed Generations (DGs) assumed an important role in distribution and sub transmission systems. However, abnormal operating conditions of the distribution ...
Priorização da manutenção em subestações com foco na confiabilidade e na remuneração da função transmissão
(Universidade Federal de Santa Maria, 2016-11-21)
Transmission companies, in Brazilian electricity sector, are paid by the facilities available to the National Interconnected System - SIN. The different equipment on the transmission system are subject to the occurrence ...
Programação inteira binária aplicada na coordenação da proteção de sistemas elétricos de potência
(Universidade Federal de Santa Maria, 2016-09-30)
This paper presents an innovative approach to coordinate typical protection devices of transmission, subtransmission and distribution systems – fuse links and functions ANSI 21, 67, 87, 50 and 51. The settings obtained by ...
Contribuições ao projeto de sistemas eólicos de efeito magnus com rastreamento da máxima potência
(Universidade Federal de Santa Maria, 2016-08-26)
This work deals with an unconventional wind energy conversion system, in which the wind turbine has rotating cylinders rather than traditional blades. These cylinders can be driven by a brushless DC motor. The turbine ...
Aplicação de LEDs na microscopia óptica ao diagnóstico da malária
(Universidade Federal de Santa Maria, 2016-07-29)
This work presents a study on the application of LED (Light Emitting Diode) to optical microscopy
in the diagnosis of malaria, in order to analyze the light emitted by the LED and
compare with the light produced by a ...