Electrical Motors
Mostrando 1-12 de 35 artigos, teses e dissertações.
-
1. Optimization Techniques and Mathematical Modeling Applied to Reluctance Motors
Abstract The present work aims at the application of different optimization strategies in the electromagnetic analysis of the Variable Reluctance Motor (VRM) through Finite Element (FE) simulation. Two case studies are investigated: the first one aims to optimize the geometry and electrical characteristics of windings of a single-phase VRM 6/6, minimizing co
Journal of Microwaves, Optoelectronics and Electromagnetic Applications. Publicado em: 2022
-
2. Application of methodology for the adequacy of the electrical motor's power sizing: permanent and transient analysis
Abstract The suitability of the motive force contributes to the efficient use of electrical energy. On the other hand, the inadequate size of electric motors is directly connected to increased investment and running costs. This article presents the theory and mainly the application of a methodology for the adequacy of the motive power. The research was condu
REM, Int. Eng. J.. Publicado em: 2018-04
-
3. HARVESTING FRUITS USING A MOBILE PLATFORM: A CASE STUDY APPLIED TO CITRUS
ABSTRACT Harvesting fruits and vegetables has been a challenge. Mobile platforms for harvesting vegetables and fruits have been used, but with some limitations, such as their applicability for a certain time of the year and for a specific crop. A mobile platform was initially developed for harvesting fresh market tomatoes, mainly staked in Brazil. However, a
Eng. Agríc.. Publicado em: 2018-04
-
4. Estimation of Three-Phase Induction Motor Equivalent Circuit Parameters from Manufacturer Catalog Data
Abstract The single phase equivalent circuit is largely used to model the three-phase induction motors in steady-state operation and under sinusoidal balanced voltages. Depending on the desired application, the circuit may or may not represent core losses, a double cage or even the variation of parameters due to skin effect and saturation. However, the deter
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2017-03
-
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. 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
-
7. Avaliação da influência da temperatura e ponto de orvalho no recozimento final de aços elétricos semiprocessados e totalmente processados / Evaluation of the influence of final annealing heat treatment temperature and dew point in semi-processed and fully processed electrical steels
Semi-processed electrical steels require annealing after processing in the motors manufactures to improve motors efficiency by reducing losses and increasing permeability. Annealing in fully processed electrical steel is performed to relax the residual stress and promote recovery or recrystallization of distorted parts. Commercial samples from different stee
Publicado em: 2010
-
8. Avaliação da influência dos parâmetros do processo de soldagem TIG sobre a qualidade de uma peça fabricada em aço elétrico silicioso / Influence of TIG welding process parameters on the quality of a piece fabricated with silicon electrical steel
The TIG welding process (Tungsten Inert Gas), also known as GTAW (Gas Tungsten ArcWelding), is the most commonly used process for welding of thin plates where there is a need for an excellent control of the temperature applied on the piece. This paper presents a study carried out in partnership between the Department of Graduate Studies in Scienceand Materia
Publicado em: 2010
-
9. Projeto de filtros para atenuação de correntes de modo comum e de sobretensões em acionamentos de motores elétricos utilizando inversores PWM
The use of inverters in most of electrical motor drives applications has been accompanie by several undesirable effects, such as overvoltage at the motor terminals, circulation of common mode currents and electromagnetic interference problems. The determining factors for most of these problems come with the high switching speed and frequency of the semicondu
Publicado em: 2010
-
10. 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
-
11. Dynamic response of three-phase induction motors to voltage sags in the power supply network / Resposta dinâmica dos motores de indução trifásicos a afundamentos de tensão na rede de alimentação
This research shows a study on the dynamic response of three-phase induction motors submitted to voltage sags. Computer simulations about a distribution system, as well as the modeling of three-phase induction motors based on actual data, were made using ATP (Alternative Transients Program) software. These simulations intended to generate representative situ
Publicado em: 2009
-
12. Desenvolvimento e aplicações de sensores de campo magnético por indução : [dissertação]
This work addresses the development of magnetic elds meters at low frequencies. The sensing elements used are induction coils and the Chattock-Rogowski coils, both with non-ferromagnetic cores. Theoretical and experimental studies on the working principle of these sensors are presented, considering the practical aspects related to their non-ideal behavior. T
Publicado em: 2009