Electrical Machines
Mostrando 1-12 de 31 artigos, teses e dissertações.
-
1. Fuzzy control applied to an electrical power generation system mounted on tractors for driving of agricultural implements
ABSTRACT The demand of the agricultural sector for more operationally efficient machines and implements motivated the development of alternatives for driving of this equipment. Aiming an electrical supply to apply in agricultural implements, this study proposes a system that uses the tractor power take off to activate a synchronous generator, using a fuzzy l
Eng. Agríc.. Publicado em: 2016-10
-
2. Improved capacity of eccentric mechanical presses existing in Brazilian industry / Melhoria na capacidade de produção das prensas mecânicas excêntricas existentes na indústria brasileira
This work defines a methodology to improve the production capacity of the mechanical presses existing in the Brazilian industry. The eccentric mechanical presses with crank drive (connecting rod) are very simple machines for operation, but these presses use a lot of energy during the working cycle, partially due the fixed descent and rising speeds of the sli
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 22/02/2011
-
3. Dynamic modeling of transverse flux permanent magnet generator for wind turbines
The transverse flux permanent magnet machines have become an interesting possibility for offshore wind turbines. These machines have the highest relation between electrical torque and weight of active materials. The pole pair modular construction could eliminate or lower the gear ratio used in conventional wind turbines. This paper presents a dynamic model o
Journal of Microwaves, Optoelectronics and Electromagnetic Applications. Publicado em: 2011-06
-
4. Caracterização termoanalítica e estudo de cura de compósito de resina epóxi e mica com propriedades elétricas isolantes aplicado em máquinas hidrogeradoras / Thermoanalytical Charactherization and Cure Study of an Epoxy resin and Mica Composite with Insulating Electrical Properties applied in Hydrogenerators Machines
Atualmente, a participação da energia elétrica na matriz energética mundial é um assunto em evidência. O estudo do compósito isolante da barra estatórica, um dos componentes principais da máquina hidrogeradora, permite a obtenção de informações físico-químicas relevantes ao aperfeiçoamento do sistema, e também de estudos de comportamento té
Publicado em: 2011
-
5. Projeto e construção de um motor elétrico linear aplicado à bioengenharia / Design and construction of a linear electric motor applied to bioengineering
Considerando-se o atual estagio de desenvolvimento das máquinas elétricas, tanto em termos de ferramentas computacionais auxiliares nas simulações e nos projetos, quanto de materiais e sistemas eletrônicos de acionamento e controle, propõe neste trabalho a construção de um dispositivo eletromecânico, na classe dos motores elétricos lineares, que at
Publicado em: 2011
-
6. ANÁLISE ESTRUTURAL DE PÁS DE GERADOR EÓLICO DE PEQUENO PORTE FEITAS DE FIBRA VEGETAL BRASILEIRA / STRUCTURAL ANALYSIS OF BLADES SMALL WIND GENERATOR MADE OF BRAZILIAN VEGETABLE FIBER
The wind energy potential in the Northeast of Brazil, and especially in the state of Ceará is huge and offers conditions to compensate the missing options for building further full size hydroelectric Power plants and to guarantee the energy supply for this region with green renewable energy. Apart from that it offers opportunities for promoting a sustainabl
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 10/11/2010
-
7. Algoritmo para frenagem regenerativa de uma máquina síncrona de imã permanente / Algorithm for regenerative braking of a permanent magnet synchronous machine
Environmental protection and optimal energy resources are great activity research areas. As a result of these researches, electric vehicles (EVs) and hybrid (HEV) developments have been accelerated. They have challenging problems such as low autonomy, power conversion, vehicle control, energy management and distribution within it, as well as the esthetic and
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 02/08/2010
-
8. Controle preditivo não-linear baseado em multimodelos aplicado ao motor de indução / Induction motor non-linear predictive control based on a multimodeling approach
Uma abordagem preditiva global-local para o controle de um motor de indução é apresentado nesta tese. O conceito de controle preditivo diz respeito a uma classe de controladores que tem se desenvolvido muito no âmbito do controle de sistemas de conversão de energia nos últimos anos, acompanhando o desenvolvimento da capacidade computacional dos sistema
Publicado em: 2010
-
9. Telescopic continuum robot for tasks at high positions. / Robô contínuo telescópico para tarefas em alturas elevadas.
Among several applications of robots in the service field, it is possible to percept an increasing interest in manipulate tools in higher positions using automatic devices, due to the fact that such activities are high risked operations and demands the use of several safety equipments. The most common examples of this kind of activity are the inspection of m
Publicado em: 2009
-
10. On board sensing system to control variable rate agricultural inputs / Sistemas de sensoriamento embarcado para uso em controle de aplicações de insumos agrícolas à taxa variável
The development of systems able to join different technological tools is very important in order to provide support for Precision Agriculture and it stimulates the creation of interdisciplinary teams to obtain favorable results to increase agricultural productivity. The main goal of this work is to study applications of embedded sensing systems in agricultur
Publicado em: 2009
-
11. Classificação de sinais de eletroencefalograma usando máquinas de vetores suporte
Electroencephalogram (EEG) is a clinical method widely used to study brain function and neurological disorders. The EEG is a temporal data series which records the electrical activity of the brain. The EEG monitoring systems create a huge amount of data; with this fact a visual analysis of the EEG is not feasible. Because of this, there is a strong demand fo
Publicado em: 2009
-
12. Analise dos sistemas de proteção e controle de instalações industriais com geradores sincronos durante operação ilhada / Protection and control systems analysis of industrial plants with synchronous generators during islanded operation
Modern industrial systems are very sophisticated installations with a high number of automatic processes and capability of isolated (islanded) operation after contingences by using onsite generators composed mainly by synchronous machines and steam turbines. Such installations, in the presence of generators, are generically called autoproducers. Since many o
Publicado em: 2009