Direct Power Control
Mostrando 1-12 de 47 artigos, teses e dissertações.
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1. Mortality of primates due to roads and power lines in two forest patches in Bangladesh
ABSTRACT Primates are in imminent risk of extinction due to different types of anthropogenic activities. Mortality due to road accidents and electrocution from power lines are among the major direct anthropogenic threats to the survival of primates. We collected primate mortality data from 2015 to 2017 at Lawachara National Park and Satchari National Park in
Zoologia (Curitiba). Publicado em: 21/10/2019
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2. Analysis of laser therapy effects in Sporothrix schenckii inactivation in vivo
Abstract Introduction Sporotrichosis is a common disease in tropical regions, caused by the fungus Sporothrix schenckii, affecting mainly rural workers and in direct contact with animals. Although treatment by indiscriminate use of oral antifungal drugs gives rise resistant isolates, leading to therapeutic failures and no remission of the disease. To evalu
Res. Biomed. Eng.. Publicado em: 28/05/2018
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3. The use of smart structures in the realization of effective semi-active Control systems for vibration reduction
The realization of semi-active actuators by smart structures is discussed. Semi-active actuators have the advantage of consuming much less power than direct-active actuators and are appropriate for the utilization in vibration problems encountered in aeronautical applications, where the loads are in general too high for direct-active actuators to perform. Th
J. Braz. Soc. Mech. Sci. & Eng.. Publicado em: 2012
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4. Parâmetros da ação antimicrobiana e da citotoxidade do ozônio para aplicação na Endodontia / Parameters of the antimicrobial activity and cytotoxicity of ozone for use in Endodontics
This study analyzed the action of ozone as an adjunct to endodontic therapy. So (I) evaluated the effectiveness of ozonated water in microbial reducing performed on bacterial suspension of Enterococcus faecalis, Pseudomonas aeruginosa and Staphylococcus aureus - in vitro study (II) tested the efficiency of ozone gas and ozonated water in reducing microbial h
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 31/08/2011
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5. Aplicação do perceptron de múltiplas camadas no controle direto de potência do gerador de indução duplamente alimentado / Application of the multilayer perceptron on the direct power control of the DFIG
Neste trabalho é apresentada a estratégia de Controle Direto de Potência para o Gerador de Indução Duplamente Alimentado utilizando um controlador Perceptron de Múltiplas Camadas. O controlador tem a função de gerar os sinais das componentes de eixo direto e quadratura da tensão do rotor, sem a necessidade de controladores de corrente. A estratégia
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 31/03/2011
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6. Conversor matricial indireto para acionamento de motor de indução trifásico
Matrix converter topologies, despite the technological challenges it still presents, offers interesting possibilities concerning volume, weight, operating temperature grade, life time and input power factor. In order to create sufficient design resources to build a working prototype, initially a brief theoretical research was conducted in direct and indirect
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 12/03/2010
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7. Efeitos de um treinamento físico sobre o equilíbrio estático e dinâmico de mulheres idosas residentes na área de abrangência do Programa Saúde da Família de São Carlos
IBGE estimative for relative Brazilian elderly participation was 9.49% in 2008 and 29.75% in 2050. However, the country has been organized to define public policy to elderly people. Health Family Program has been presented as a strategy to consolidate this policy. Physical therapy participates of this system with a different perspective. It is also performin
Publicado em: 2010
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8. IDENTIFICATION OF THE BEHAVIOR OF TEMPERATURE MAIN RECTIFIER OF A DIESEL-ELECTRIC LOCOMOTIVE / IDENTIFICAÇÃO DO COMPORTAMENTO DA TEMPERATURA DO RETIFICADOR PRINCIPAL DE UMA LOCOMOTIVA DIESEL-ELÉTRICA
In this dissertation, we explore the application of the Theory of System Identification to develop a mathematical model that represents the behavior of the electrical current rectifier used to power the traction motors of a locomotive diesel-electric, based on mathematical manipulation of its temperature data. It was developed an ARX model and, using the aid
Publicado em: 2010
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9. Vein graft fulfilled with fat in peripheral nerve repair: a new proposal / Enxerto venoso preenchido com gordura no reparo de nervo periférico: uma nova proposta
With technology advance and the resultant production of more sophisticated equipment, microsurgery has been obtaining more attention in the experimental investigation field referred to peripheral nerves repair. It is know that in case of simple nerve section, without tissue loss, the end-to-side-neurorraphy is the most recommended technique. However, in each
Publicado em: 2010
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10. Simultaneous measurements of the solid particles velocity and concentration profiles in two phase flow by pulsed ultrasonic doppler velocimetry
In this experimental study, the pulsed ultrasonic Doppler velocimetry was used to measure simultaneously the local velocity and the local concentration in a flow of solid-liquid suspension in a horizontal pipe. In order to distinguish between the Doppler signals coming from the continuous phase, water and those of the glass bead particles larger than the Kol
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2009-12
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11. Influence of luting agents on time required for cast post removal by ultrasound: an in vitro study
OBJECTIVE: This in vitro study evaluated the influence of luting agents on ultrasonic vibration time for intraradicular cast post removal. MATERIAL AND METHODS: After endodontic treatment, 30 roots of extracted human canines were embedded in resin cylinders. The post-holes were prepared at 10 mm depth and their impressions were taken using autopolymerizing a
Journal of Applied Oral Science. Publicado em: 2009-06
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12. Estabilização de oscilações de potencia de linhas de intercambio atraves de um elo de corrente continua / Stabilization of power lines interchange oscillations through a direct-current link
When an interconnected alternate-current power system suffers variations of loads, its frequency can exhibit an oscillatory behavior. If this system possesses a direct-current link in parallel with the inter-tie lines, this effect could be decreased, due to the link current controller action. This work presents a study that evaluates the efficiency of DC lin
Publicado em: 2009