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基于矢量控制的感应电机弱磁控制算法研究.docx

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基于矢量控制的感应电机弱磁控制算法研究 Abstract Withthewidespreaduseofinductionmotors,theissuesoflowmagneticcontrolandenergyefficiencyhavebecomecritical.Thispaperpresentsastudyontheweakmagneticcontrolalgorithmofinductionmotorsbasedonvectorcontrol.Theoreticalanalysis,simulation,andexperimentmethodareusedtoverifytheeffectivenessofthisalgorithm.Theresultsshowthattheweakmagneticcontrolalgorithmhasimprovedtheperformanceofinductionmotorsunderweakmagneticconditions,increasedtheenergyefficiencyofthemotor,andhasabroadapplicationprospect. Keywords:Inductionmotor;Vectorcontrol;Weakmagneticcontrolalgorithm;Energyefficiency. Introduction Inductionmotorshavebeenwidelyusedinvariousindustriesduetotheiradvantagessuchassimplestructure,reliableoperation,andeasymaintenance.However,intheactualoperationprocess,theinductionmotorhaspoorperformanceunderweakmagneticconditions,whichaffectstheefficiencyofthemotor.Theweakmagneticconditionreferredtotheconditionthatthestatormagneticfieldisweakornotfullyutilizedtoexcitetherotor.Thisconditionoftenoccursinthestart-upprocessorwhenthemotoroperatesunderalightload.Duringtheseprocesses,theinductionmotorconsumesmoreenergy,andtheefficiencyislower,whichdamagestheeconomicefficiencyoftheelectricmotorsystem. Thetraditionalmethodofimprovingtheperformanceofinductionmotorsunderweakmagneticconditionsistoincreasethestatorvoltageorreducethestatorresistancetocompensateforthemagnetizationloss.However,thismethodwillincreasethereactivepowerloss,resultinginlowerenergyefficiencyofthemotor.Therefore,itisnecessarytodevelopanewmethodfortheweakmagneticcontrolofinductionmotors,whichcanimprovethemotor'sperformanceunderweakmagneticconditions,enhancethemotorenergyefficiencyandreducethesystemloss. Vectorcontrolisoneofthemostpopularmethodsforthecontrolofinductionmotors,whichcaneffectivelymatchthestatorandrotormagneticfieldinreal-timetoachievecomprehensivecontrolofmotors.Inthisarticle,theweakmagneticcontrolalgorithmofinductionmotorsbasedonvectorcontrolisproposed.Thetheoreticalanalysisandsimulationresu