Search results for "rotor fault"

showing 3 items of 3 documents

Vibration signature analysis for rotor broken bar diagnosis in double cage induction motor drives

2013

The paper investigates the diagnosis of rotor broken bars in field oriented controlled (FOC) double cage induction motor drives, using current and vibration signature analysis techniques. The Impact of the closed loop control system cannot be neglected when the detection of asymmetries in the machine are based on the signature analysis of electrical variables. The proposed diagnosis approach is based on optimized use of wavelet analysis by a pre-processing of phase current or axial/radial vibration signals. Thus, the time evolution of the tracked rotor fault components can be effectively analyzed. This paper shows also the relevance of the fault components computed from axial vibration sign…

Engineeringadial vibration signalBar (music)machine vector controlinduction motor driverotor broken bar diagnosiSettore ING-IND/32 - Convertitori Macchine E Azionamenti Elettriciphase current signalFault (power engineering)VibrationWound rotor motorlaw.inventionINDUCTION MOTORSRotorlawControl theoryclosed loop control systemdouble cage rotortime evolutionInduction motorpreprocessingwavelet transformvibration signature analysielectric currentaxial vibration signalVector controlfield oriented controlfault diagnosticrotor faultRotor (electric)business.industrySquirrel-cage rotorclosed loop systemfault diagnosiStatorAC Machinecurrent signature analysiBarVibrationCONDITION MONITORINGTime-Frequency Analysidouble cage induction motor driveignal processingmaintenance engineeringwavelet analysibusinessInduction motor4th International Conference on Power Engineering, Energy and Electrical Drives
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Diagnosis of mechanical unbalance for double cage induction motor load in time-varying conditions based on motor vibration signature analysis

2013

This paper investigates the detectability of mechanical unbalance in double cage induction motor load using motor vibration signature analysis technique. Rotor imbalances induce specific harmonic components in electrical, electromagnetical, and mechanical quantities. Harmonic components characteristic of this category of rotor faults, issued from vibration signals analysis, are closely related to rotating speed of the rotor, which complicates its detection under non-stationary operating conditions of the motor. Firstly, experimental results were performed first under healthy and mechanical load unbalance cases, for different load levels under steady-state operating conditions to evaluate th…

Engineeringcondition monitoringSettore ING-IND/32 - Convertitori Macchine E Azionamenti Elettricilaw.inventionelectromagnetical quantitieWaveletRotorlawInduction motorelectrical quantitieMechanical loadrotating speedRotor (electric)Condition monitoringharmonic componentTime-frequency analysicurrent signature analysiTransient analysiSteady-statewavelet transformsmotor radial vibration signature analysis techniquemechnical load unbalanceHarmonicwavelet analysimotor axial vibration signature analysis techniquemotor vibration signature analysiApproximation methodtime-varying conditionVibrationvibration measurementmechanical quantitienonstationary operating conditionControl theorymechanical unbalanceSensitivity (control systems)vibration signals analysirotor imbalancewavelet transformvibration signature analysiRenewable Energy Sustainability and the Environmentrotor faultbusiness.industryfault diagnosiFFT analysifast Fourier transformVibrationdouble cage induction motor loadignal processingbusinessInduction motor2013 International Conference on Renewable Energy Research and Applications (ICRERA)
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Closed-loop bandwidth impact on MVSA for rotor broken bar diagnosis in IRFOC double squirrel cage induction motor drives

2013

This paper investigates the detectability of rotor broken bars in indirect rotor flux oriented control (IRFOC) for variable speed double cage induction motor drives, using vibration signature analysis techniques. The Impact of the closed loop control system cannot be neglected when the detection of rotor asymmetries in the machine is based on the signature analysis of electrical or mechanical variables. Therefore, the investigation of rotor fault components for different bandwidths of closed-loop regulators is necessary to evaluate its relevance in the above listed variables. This paper investigates the impact of the control system on relevance of the fault components computed from axial an…

Engineeringvibration signature analysis techniqueclosed-loop bandwidth impactrotor broken bar diagnosiSettore ING-IND/32 - Convertitori Macchine E Azionamenti Elettricielectrical variablelaw.inventionlawRotorclosed loop control systemcontrol impactInduction motorINDUCTION MOTOR DRIVESbandwidth PI regulatorrotor asymmetry detectionBandwidth (signal processing)closed loop systemStatorIRFOC double-squirrel cage induction motor driveFAULT DIAGNOSISrotor broken barmachine controlPI controlindirect rotor flux oriented controlMVSArotor broken bar detectabilityvariable speed double cage induction motor drivesquirrel cageinduction motor driveVibrationWound rotor motorrobust fault signatureQuantitative Biology::Subcellular ProcessesBandwidthControl theoryquirrel cage motordouble cage rotorrotor fault componentMachine controlaxial vibration signalbusiness.industrySquirrel-cage rotorRegulatormechanical variablefault diagnosiAC MachineBarCondition monitoringVibrationclosed-loop regulatorControl systembusinessrotor bar breakageClosed loopradial vibration signalInduction motor
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