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RESEARCH PRODUCT
Closed-loop bandwidth impact on MVSA for rotor broken bar diagnosis in IRFOC double squirrel cage induction motor drives
Rosario MiceliF. FilippettiClaudio RossiA. O. Di TommasoYasser Gritlisubject
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 motordescription
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 and radial vibration signals. Experimental results show the validity of this impact, and more specifically, the bandwidth PI regulators. Due to its relevance, axial vibration analysis shows a more robust fault signature, under the control impact, in separating healthy from rotor bar breakage in double squirrel cage induction motors.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2013-06-01 |