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Proteção contra perda de excitação em geradores síncronos: uma nova proposta utilizando o método do cálculo contínuo da impedância aparente
(Universidade Federal de Santa Maria, 2015-10-16)
This work presents a new Loss-of-Excitation in synchronous generators protection scheme based on the Continuous Apparent Impedance Calculation. This methodology aiming to improve security and dependability to the ANSI 40 ...
Método de carga para banco de baterias em fontes ininterruptas de energia que busca garantir o estado de carga completa: corrente pulsada modificado
(Universidade Federal de Santa Maria, 2015-02-15)
This Master s Dissertation is proposes the development of a charge management system of a bank of 16 lead-acid batteries with 7Ah load capacity, commonly used in Uninterruptible Power Supplies (UPS). This system aims to ...
Comparação de funções objetivo para seleção de PSS pelo amortecimento de oscilações em sistemas multimáquinas
(Universidade Federal de Santa Maria, 2015-12-15)
Small disturbances occur continuously in electrical systems mainly due to load and generation
variations. This ends up causing low frequency voltage fluctuations that are usually observed
in systems whose lines have weak ...
Estudo da eficiência energética pneumática no sistema de abertura de portas de veículos de transporte de passageiros "ônibus"
(Universidade Federal de Santa Maria, 2015-03-30)
In pneumatics, the path to greater energy efficiency will careful engineering to configure the solutions based on real needs, the implementation of consistent energy efficiency targets in applications. The aim of this study ...
Dimensionamento e análise de desempenho de um sistema de reaproveitamento de vapor flash proveniente de uma fábrica de farinha e gordura animal para aquecimento de água
(Universidade Federal de Santa Maria, 2015-02-23)
This objective of the work is the project and performance analysis of a recovery system / flash steam generated by meat meal factory . The great demand for animal feed in Brazil caused a great need to look for more efficient ...
Análise de eficiência energética de uma central de microgeração fotovoltaica em um edifício residencial em Santa Rosa - RS
(Universidade Federal de Santa Maria, 2015-02-25)
This paper aims to analyze a power compensation system in the brazilian electric power system through a micro distributed system installed in Santa Rosa - RS. An electric power-saving projection on the grid is performed ...
Contribuições ao controle do motor síncrono de ímã permanente com FCEM não senoidal
(Universidade Federal de Santa Maria, 2015-08-20)
This thesis presents contributions to the sensorless vector control of Permanent
Magnet Synchronous Motors (PMSM) with nonsinusoidal back Electromotive Force (back-
EMF), whose magnets are allocated on the rotor surface. ...
Concepção de um conversor DC-DC auto-oscilante aplicado a um sistema energy harvesting
(Universidade Federal de Santa Maria, 2015-09-01)
This thesis aims to present the design and development of a self-oscillating DC-DC converter applied to an Energy Harvesting (EH) system. The relevance of this study is caracterized by the proposed standard analysis with ...
Maximização do aproveitamento energético de painéis fotovoltaicos usando rastreadores mecânicos
(Universidade Federal de Santa Maria, 2015-03-13)
Photovoltaic market consolidation occurred in the last decade resulted in an increased contribution of this energy source in global electric power generation, especially in commercial and industrial distributed generation. ...
Metodologia para priorização de investimentos em redes de distribuição de energia elétrica com foco em ganhos operacionais e financeiros
(Universidade Federal de Santa Maria, 2015-03-13)
The current scenario of the Brazilian electricity sector, through the constant and recent regulatory changes imposed by ANEEL in recent years, aims to ensure continuous improvement in quality standards in the provision of ...