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基于滑模观测器与分数阶锁相环的无传感器PMSM矢量控制(英文).docx

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基于滑模观测器与分数阶锁相环的无传感器PMSM矢量控制(英文) Title:SensorlessPMSMVectorControlBasedonSlidingModeObserverandFractional-OrderPLL Abstract: Inthispaper,asensorlesspermanentmagnetsynchronousmotor(PMSM)vectorcontrolsystemisproposed,whichisbasedonaslidingmodeobserverandafractional-orderphase-lockedloop(PLL).Theslidingmodeobserverisdesignedtoestimatetherotorpositionandspeed,andthefractional-orderPLLisusedtoaccuratelydetectthestatorcurrentsforthePMSMvectorcontrol.SimulationresultsdemonstratethattheproposedapproachcanprovideaccuratespeedandpositioncontrolforthePMSMwithouttheneedforadditionalsensors,anditisrobusttoparameteruncertaintiesandexternaldisturbances. Introduction: ThePMSMiswidelyusedinvariousapplicationsduetoitshighefficiency,hightorquedensity,andsmallsize.Inmanycases,itisnecessarytocontrolthespeedandpositionofthePMSMaccurately.However,traditionalcontrolmethodsbasedoncurrentandvoltagefeedbackrequireadditionalsensors,whichincreasethesystemcostandcomplexity.Sensorlesscontrolmethodscanprovideacost-effectiveandefficientsolutionforPMSMcontrol.Varioussensorlesscontrolmethodshavebeenproposed,includingbackEMFestimation,model-basedobservers,andslidingmodeobservers.Inrecentyears,fractional-orderPLLshavealsobeenusedinsensorlessPMSMcontroltoimprovetheaccuracyofcurrentandvoltagemeasurements.Inthispaper,weproposeasensorlessPMSMvectorcontrolsystembasedonaslidingmodeobserverandafractional-orderPLL. SlidingModeObserver: Theslidingmodeobserverisusedtoestimatetherotorpositionandspeedwithouttheneedforadditionalsensors.Theslidingmodeobserverisahigh-gainobserverthatusestheslidingmodecontroltechniquetodrivetheestimationerrortozero.TheslidingmodeobserverisdesignedbasedonthePMSMmodelandtheslidingmodecontroltheory.TheobserverestimatesthestatevariablesofthePMSMbycomparingthemeasuredstatorcurrentsandvoltageswiththeestimatedvalues.Theslidingmodeobserverhasgoodrobustnesstoparameteruncertaintiesandexternaldisturbances,anditcanprovideaccurateestimatesofthePMSMstatevariables. Fractional-OrderPLL: Thefractional-