Search results for "Broken rotor bars"

showing 3 items of 3 documents

Broken rotor bars detection via Park's vector approach based on ANFIS

2014

Many attempts have been made on fault diagnosis of induction motors based on frequency and time domain analysis of stator current. In this paper, first the Park's vector transformation and frequency analysis for fault detection of induction motors are introduced. Then a smart approach using Adaptive Neuro Fuzzy Inference System (ANFIS) is proposed. This approach uses the time domain features derived from the Park's vector transformation of stator current. By the proposed method, a partial break including 5 mm crack on a bar, one broken bar and two broken bars using experimental data are investigated. It will be shown that features derived from Park's vector compared to features obtained fro…

EngineeringAdaptive neuro fuzzy inference systemRotor (electric)business.industryStatorANFIS; broken rotor bars; fault diagnosis; Park's transformation; Electrical and Electronic Engineering; Control and Systems EngineeringCoordinate vectorfault diagnosisFault (power engineering)Fault detection and isolationlaw.inventionlawControl theoryControl and Systems EngineeringTime domainElectrical and Electronic EngineeringbusinessANFISbroken rotor barsPark's transformationInduction motor
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Validation of a New Method for the Diagnosis of Rotor bar Failures via Wavelet Transformation in Industrial Induction Machines

2006

[EN] In this paper, the authors propose a method for the diagnosis of rotor bar failures in induction machines, based on the analysis of the stator current during the startup using the discrete wavelet transform (DWT). Unlike other approaches, the study of the high-order wavelet signals resulting from the decomposition is the core of the proposed method. After an introduction of the physical and mathematical bases of the method, a description of the proposed approach is given; for this purpose, a numerical model of induction machine is used in such a way that the effects of a bar breakage can clearly be shown, avoiding the influence of other phenomena not related with the fault. Afterward, …

Discrete wavelet transformEngineeringStatorCascade algorithmWavelet analysisFault (power engineering)Industrial and Manufacturing Engineeringlaw.inventionHarmonic analysisBroken rotor barssymbols.namesakeWaveletControl theorylawElectrical and Electronic EngineeringFault diagnosisbusiness.industryRotor (electric)Wavelet transformTime–frequency analysisFourier transformControl and Systems Engineeringsymbolsstartup transientINGENIERIA ELECTRICAbusinessInduction motor
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The Use of the Wavelet Approximation Signal as a Tool for the Diagnosis of Rotor Bar Failures

2005

[EN] The aim of this paper is to present a new approach for rotor bar failure diagnosis in induction machines. The method focuses on the study of an approximation signal resulting from the wavelet decomposition of the startup stator current. The presence of the left sideband harmonic is used as evidence of the rotor failure in most diagnosis methods based on the analysis of the stator current. Thus, a detailed description of the evolution of the left sideband harmonic during the startup transient is given in this paper; for this purpose, a method for calculating the evolution of the left sideband during the startup is developed, and its results are physically explained. This paper also show…

Discrete wavelet transformEngineeringStatorWavelet analysisSignalIndustrial and Manufacturing Engineeringlaw.inventionHarmonic analysisBroken rotor barsWaveletStartup transientControl theorylawElectrical and Electronic EngineeringFault diagnosisApproximation theorySidebandbusiness.industryRotor (electric)Wavelet transformControl and Systems EngineeringHarmonicINGENIERIA ELECTRICATransient (oscillation)business
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