Search results for "broken bar"

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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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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Double squirrel cage induction motors: A new approach to detect rotor bar failures

2013

The purpose of this paper is to present a diagnosis technique, for rotor broken bar in double cage induction motor, based on a combined use of frequency sliding and wavelet transform analysis, to isolate the contribution of the rotor fault components issued from vibration signals in a single frequency band. The validity of the proposed diagnosis approach is not limited to the analysis under steady-state operating conditions, but also for time-varying conditions where rotor fault components are spread in a wide frequency range.

Vibration signaturedouble squirrel cage motorbroken barSettore ING-IND/32 - Convertitori Macchine E Azionamenti ElettriciSettore ING-INF/07 - Misure Elettriche E Elettronicheinduction motor
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