Generator Dynamics
Mostrando 1-12 de 23 artigos, teses e dissertações.
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1. Electromagnetic Core Analysis of a DFIG State-Feedback Power Controller
Abstract The energy demand by modern society grows every day that allied with sustainable development requires the use of alternative sources in the new energy matrix. In this context, the wind energy as source by using a doubly-fed induction generator stands out due to its operational savings but still faces some conflicts in its power control. This paper p
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 12/09/2019
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2. Energy harvesting through pendulum motion and DC generators
Abstract In this paper a mathematical model was found, and numerical results obtained for the pendulum behavior when coupled to a DC generator. A simple pendulum is vertically excited on its support and consequently exhibiting oscillations and rotations. The motion of the pendulum spins the axis of a DC generator and inducing a current. The dynamic model inv
Lat. Am. j. solids struct.. Publicado em: 18/02/2019
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3. One-Stage Power Turbine Preliminary Design and Analysis
ABSTRACT: Design and development of gas turbine components are a complex multidisciplinary process. At the beginning of the power class definition and engine configuration it is necessary to conduct a market study. The results obtained are used in gas turbine thermodynamic cycle calculations and analysis in order to define the gas turbine design point. Sever
J. Aerosp. Technol. Manag.. Publicado em: 2015-06
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4. Simulação, projeto e teste de um gerador a relutância chaveado trifásico 6 x 4 / Simulation, design and test of a three-phase switched reluctance generator 6 x 4
Switched reluctance machines have received considerable attention from the scientific community due to advances in power electronics, and now is considered a promising electric machine for some applications, especially where variable speed operations are needed for motor or generator. Therefore, this work presents the dynamics of a switched reluctance machin
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 13/06/2011
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5. Álgebra geométrica aplicada à simulação de corpos rígidos / Geometric algebra applied to rigid body simulation
Álgebra geométrica é uma ferramenta matemática para formulação e resolução de problemas geométricos, sendo uma alternativa para a álgebra linear classicamente utilizada. Com o intuito de demonstrar a utilidade do formalismo, uma engine física para simulação de corpos rígidos foi desenvolvida. O trabalho apresenta os conceitos de álgebra geomé
Publicado em: 2010
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6. A resposta ventricular evocada nos pacientes com miocardiopatia hipertrofica obstrutiva tratada por marcapasso DDD / Ventricular evoked response in patients with hypertrophic obstructive cardiomyopathy treated with DDD pacing
Objective - To assess the changes in ventricular evoked responses (VER) produced by the decrease in left ventricular outflow tract gradient (LVOTG) in patients with hypertrophic obstructive cardiomyopathy (HOCM) treated with dual-chamber (DDD) pacing. Methods - A pulse generator Physios CTM (Biotronik, Germany) was implanted in 9 patients with severe drug-re
Publicado em: 2010
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7. Temporal and spatial variability of rainfall and water balance in the state of Rondônia, Brazil: characterization tendency analysis / Variabilidade temporal e espacial das chuvas e do balanço hídrico no estado de Rondônia: caracterização e análise de tendência
Amazon deforestation rate has been significant, resulting in a great concern about the effect that the reduction of the forest can have on the climatic dynamics in this region, as well as in other brazilian locations. In such context, the present work aimed to verify if the current rate of deforestation in Rondônia, last 30 years has been contributed for ch
Publicado em: 2009
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8. "The DAIA, it serves primarily for the appropriation of territories " / O DAIA, isso serve, em primeiro lugar, para a apropriação de territórios
The research objective is to understand the city of Anápolis/GO and Agro-industrial District - DAIA, based on the puzzle of social relations, entangled for diverse citizens, in which the State, the employers and the local working class are detach. The Agro-industrial district is situated in Goiânia-Anápolis-Brasilia axle (had for the local forces as impor
Publicado em: 2009
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9. Serviço ancilar de potência reativa de geradores síncronos: aspectos técnicos e regulatórios / Synchronous Generator Reactive Power Service: Technical and Regulatory Aspects
Este trabalho analisa aspectos técnicos e regulatórios dos serviços ancilares de geradores síncronos, no suporte de reativos, e enfatiza que as regras brasileiras, não estimulam investimentos para atender este propósito e isto pode degradar estes recursos. No passado, os sistemas elétricos ao redor do mundo costumavam ser serviços públicos centraliz
Publicado em: 2008
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10. Modelagem e previsão de comportamento de processos de injeção de vapor em escalas de laboratorio / Modeling and prediction behavior of steam injection process on laboratory scales
Steam injection is one of the most widely used techniques in the word for heavy oil recovery. The scope of this work refers to the proposition of an experimental apparatus for studying this technique. The apparatus is detailed, with emphasis on its major components, such as: steam generator, steam quality control and the injection prototypes: a tube to study
Publicado em: 2008
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11. The Salvador city and the external media: stolen beauty? / A cidade de Salvador e a mídia externa: beleza roubada?
The city of Salvador in Bahia state, as well as major cities, is experiencing changes related to the dynamics of globalization that emphasizes consumption habits which are broadcast by the capitalist system. The growth of investment in the market for outdoor advertising contributes to the increase in external media elements of the urban landscape. This paper
Publicado em: 2008
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12. Avaliação da disponibilidade energética em atividade física realizada em bicicleta estacionária
Nowadays, the search of better life quality is related, invariably, to the developed practice of physical activity mainly at gyms. Although in these places, there is considerable expenditure of human energy, they are not characterized as an energy management model that can reflect in considerable economy in monthly electric energy consumption. The conception
Publicado em: 2008