Induction Machine
Mostrando 1-12 de 64 artigos, teses e dissertações.
-
1. Experimental Loss Segregation in a Solid Rotor Induction Motor
Abstract Solid rotor induction motors (SRIMs) are asynchronous motors suited for high speed applications. This work presents an experimental case study where standard loss segregation procedures for induction motors are performed with a two-phase smooth solid rotor induction motor in order to verify their applicability. Even though the machine is supposed to
Journal of Microwaves, Optoelectronics and Electromagnetic Applications. Publicado em: 2022
-
2. 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
-
3. Influence of Temperature on Mechanical Properties, Fracture Morphology and Strain Hardening Behavior of a 304 Stainless Steel
The strain hardening behavior of an AISI 304 stainless steel at different temperatures was investigated in this work. Specimens were tensile tested up to rupture at temperatures of 25, 50, 75, 100, 125 and 150 ºC by using a universal testing machine with an attached environmental test chamber. The induction of martensite by strain was assessed by X-ray diff
Mat. Res.. Publicado em: 05/06/2017
-
4. MONITORING THE STATOR CURRENT IN INDUCTION MACHINES FOR POSSIBLE FAULT DETECTION: A FUZZY/BAYESIAN APPROACH FOR THE PROBLEM OF TIME SERIES MULTIPLE CHANGE POINT DETECTION
ABSTRACT This paper addresses the problem of fault detection in stator winding of induction machine by a multiple change points detection approach in time series. To handle this problem a new fuzzy/Bayesian approach is proposed which differs from previous approaches since it does not require prior information as: the number of change points or the characteri
Pesqui. Oper.. Publicado em: 2016-08
-
5. Bispectral Index Monitoring in Patients Undergoing Open Heart Surgery
Abstract Introduction: To obtain the optimal anesthesia depth is not easy in cardiovascular surgery patients where the haemodynamic reserve is limited, due to reasons such as not being able to give the desired dose of anesthetic agent, or the change in the pharmacokinetics of the agent in the heart-lung machine. This study was planned to assess the contribu
Braz. J. Cardiovasc. Surg.. Publicado em: 2016-04
-
6. Finite element analysis of hybrid excitation axial flux machine for electric cars
This paper presents a FEM analysis of a hybrid excitation brushless axial flux machine (HEBAFM) for traction electric vehicle purposes in order to compare with the results from an analytical method used to determine the flux densities in each part of the machine. The magnetic quantities of the proposed topology were investigated in order to obtain a satisfac
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2014-12
-
7. Wound rotor doubly fed induction machine with radial rotary transformer
This paper shows a wound rotor doubly fed induction machine in which the typical brushes and slip-rings are substituted by rotary transformers. The advantages of rotary transformer usage, the doubly fed induction machine operation and the dimensioning of a radial rotary transformer are the main aspects presented in this study. The use of analytical equations
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2013-12
-
8. Mathematic model of three-phase induction machine connected to advanced inverter for traction system for electric trolley
Este documento estabelece um modelo matemático de máquina de indução conectado a um inversor de frequência necessário para ajustar o motor de acionamento elétrico. O modelo matemático baseado na Teoria de Park permite a análise de todo o espectro (carro elétrico com inversor de frequência) para dirigir o ônibus elétrico feito em ASTRA Bus Arad (
An. Acad. Bras. Ciênc.. Publicado em: 10/05/2013
-
9. Uma abordagem para a indução de árvores de decisão voltada para dados de expressão gênica / An Approach for the Induction of Decision Trees Focused on Gene Expression Data
Estudos de expressão gênica têm sido de extrema importância, permitindo desenvolver terapias, exames diagnósticos, medicamentos e desvendar uma infinidade de processos biológicos. No entanto, estes estudos envolvem uma série de dificuldades: grande quantidade de genes, sendo que geralmente apenas um pequeno número deles está envolvido no problema es
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 18/04/2012
-
10. Controladores Robustos LQG/LTR com AÃÃo Integral Aplicados ao Controle de Geradores EÃlicos Interligados ao Sistema de DistribuiÃÃo de Energia ElÃtrica Baseados em MÃquinas de InduÃÃo Duplamente Alimentada / Robust Controller LQG/LTR with Integral Action Applied to Control of Wind Generators connected to Distribution Power System based on Doubly Fed Induction Machine
Na presente tese, propÃe-se um controlador robusto LQG/LTR (Linear Quadratic Gaussian with Loop Transfer Recovery) com aÃÃo integral (LQG/LTRI) em uma nova aplicaÃÃo para o ajuste dos controladores do conversor do lado da mÃquina e do conversor do lado rede elÃtrica em um sistema de conversÃo eÃlica utilizando um gerador de induÃÃo duplamente alim
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/01/2012
-
11. Does the casting mode influence microstructure, fracture and properties of different metal ceramic alloys?
The aim of the present study was to evaluate the tensile strength, elongation, microhardness, microstructure and fracture pattern of various metal ceramic alloys cast under different casting conditions. Two Ni-Cr alloys, Co-Cr and Pd-Ag were used. The casting conditions were as follows: electromagnetic induction under argon atmosphere, vacuum, using blowtorc
Brazilian Oral Research. Publicado em: 2012-06
-
12. Estratégia para estimação do conjugado eletromagnético de motores de indução / STRATEGY FOR THE ESTIMATION OF TORQUE ELECTROMAGNETIC INDUCTION MOTORS
The purpose of this work is to develop a strategy for determining the electromagnetic torque of induction motors (MIT) from the stator flux estimation, which presents higher robustness against parametric variations. The stator flux is estimated by integrating the voltage model of the machine, applying Highpass Filters (HFP) for ideal integration of electromo
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 13/05/2011