Three Phase Machines Of Induction
Mostrando 1-6 de 6 artigos, teses e dissertações.
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1. Teste de hipóteses sobre o espectro de freqüência, aplicado na manutenção preditiva de motores de indução
This project had begun with the aim of technical improvement and a predictive maintenance tool development for electrical machines diagnosis. Based on nonintrusive approach Motor Current Signature Analysis - MCSA for three-phase induction motor broken bars detection, it was developed a spectral analysis method able to increase accuracy and reliability, compa
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 21/08/2008
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2. Controle vetorial de velocidade de um motor de indução trifásico com estimação neural de fluxo
This work describes the study and the implementation of the speed control for a three-phase induction motor of 1,1 kW and 4 poles using the neural rotor flux estimation. The vector speed control operates together with the winding currents controller of the stator phasis. The neural flux estimation applied to the vector speed controls has the objective of com
Publicado em: 2008
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3. Study of speed estimation of induction motor without state observer and Kalman filter / Estudo de estimadores de velocidade de motor de indução com observadores de estado e filtro de Kalman
This works presents through of the simulation a comparative study of the sensorless of speed estimation of induction three-phase motor using state observer and Kalman filter. A comparative analysis of the performance of the deterministic and stochastic estimation strategies using adaptive observers and estimators based on extended Kalman filter was realized.
Publicado em: 2006
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4. Detecção e diagnóstico de falhas em motores de indução
This main purpose of this work is to design and implement a system to detect and diagnose electrical faults (stator inter-turn short circuit and broken rotor bars) and mechanical faults (unbalance and shaft misalignments) for three phase induction machines. This approach starts by obtaining the best patterns for fault detection and symmetrical models for the
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 08/07/2005
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5. Modelagem matematica para avaliação do comportamento eletrico de motores de indução trifasicos em regime permanente : um modelo neural / Mathematical modeling of an three-phase induction motor steady state : a neural model
This thesis presents a study about the steady state behavior of the three-phase induction motor. The validity of the use of the electric equivalent circuit is discussed when it is utilized on the rated conditions and also on any other operating conditions. No-load and the blocked rotor tests are performed on a three-phase induction motor for the determinatio
Publicado em: 2005
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6. ARTIFICIAL NEURAL NETS FOR ESTEEM OF SPEED IN INDUCTION MACHINES / REDES NEURAIS ARTIFICIAIS PARA ESTIMAÇÃO DE VELOCIDADE EM MÁQUINAS DE INDUÇÃO
Nesta dissertação apresenta-se um modelo de uma rede neural artificial para estimar ou medir indiretamente a velocidade em máquinas de indução trifásicas para fins de controle. Realiza-se uma análise comparativa do estimador neural com os seguintes tipos de estimadores de velocidade fundamentados: fluxo do rotor, força eletromotriz e modelo adaptativ
Publicado em: 2003