Search results for "mechanical variable"

showing 2 items of 2 documents

Optimum Performance of Permanent Magnet Synchronous Generators Coupled to Wind Turbines

2007

In this paper a control algorithm for the efficiency improvement of permanent magnet synchronous generators (PMSG) is presented. The proposed algorithm reduces the losses of the generator without affecting its performances. In details, after a description of a dynamic model of the PMSG, which has been purposely modified in order to take into account the iron losses, the basic equations and the constraints to obtain the loss minimization are presented and discussed. Some simulations of a specific PMSG employing the proposed algorithm are performed. The results of these simulations show that enhancement of the efficiency up to 3% can be reached in comparison to a PMSG using a traditional cont…

EngineeringWind powerControl algorithmbusiness.industryPermanent magnet synchronous generatorSettore ING-IND/32 - Convertitori Macchine E Azionamenti ElettriciGenerator (circuit theory)Control theoryPermanent magnets Synchronous generators Couplings Wind turbines Iron Rotors Mechanical variables control Minimization methods Mathematical model TorqueMagnetTorqueLoss minimizationbusinessMachine control2007 IEEE Power Engineering Society General Meeting
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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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