热泵工程 艾欧史密斯(中国)热水器.doc

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1、Averyfastdirecttorquecontrolforinteriorpermanentmagnetsynchronousmotorsstartup  OriginalResearchArticleEnergyConversionandManagementSelectionofthestatorfluxcommandindirecttorquecontrol(DTC)ofpermanentmagnetsynchronousmotorsisveryimportantasitaffectsmachineperformance.Forsteadystateoperation,

2、itcanhelptodecreasethestatorcurrentormachinelosses.However,inordertogetafasttorqueresponseduringmotorstartup,oneneedstochangeboththestatorfluxangleandmagnitude.Inthispaper,amethodispresentedtofindtheoptimalvoltagevectorstochangeboththefluxangleanditsmagnitudethatresultsinhighspeeddynamicsfor

3、thetorqueresponse.Theclosedformformulagivenfortheoptimalvoltagevectorisderivedbasedonmaximizingthetorquechangeineachsamplingtime.ThesimulationresultsshowthatthepresentedmethodissuperiortotheconventionalDTC.Inotherwords,itisshownthatthevoltagevectorsderivedfromtheswitchingtableforconventional

4、DTCarenottheoptimalvoltagevectorsforthesituationinwhichthereisastepchangeinthetorquecommand.ArticleOutline1.Introduction2.IPMmachinemodelandDTCfundamentals3.Fluxcommandeffectonmachineperformance4.Optimalvoltagevector4.1.Optimalvoltagevectorselection4.2.SVMtoapplyoptimumvoltagevectortomachine

5、5.Systemperformance5.1.Systemblockdiagram5.2.Simulationresults6.ConclusionsAcknowledgementsAppendixA.MotordataReferencesAhybridcontrollerforthespeedcontrolofapermanentmagnetsynchronousmotordrive  OriginalResearchArticleControlEngineeringPracticeThispaperintroducesahybridcontroller(HC)whichco

6、nsistsofaparallelconnectedslidingmodecontroller(SMC)andaneuro-fuzzycontroller(NFC)forthespeedcontrolofapermanentmagnetsynchronousmotor(PMSM)drive.TheaimofthisstudyistoobtainacontrollerthateliminatesthechatteringphenomenonandprovidesafastandsmoothdynamicresponseforthespeedcontrolofaPMSMdrive.

7、Therefore,usinganerrorbandmethod,thesystemiscontrolledbytheSMCtogetafastdynamicresponseintransientmodeandisalsocontrolledbytheNFCtogetasmoothdynamicresponseinsteadystatemode.Toillustratetheperformanceoftheproposedcontroller,thesimulationandexperime