预览加载中，请您耐心等待几秒...

变频控制下永磁同步电机温度场分析.docx

预览
1/2
2/2

在线预览结束，喜欢就下载吧，查找使用更方便

下载提示 文本预览

如果您无法下载资料，请参考说明：

1、部分资料下载需要金币，请确保您的账户上有足够的金币

2、已购买过的文档，再次下载不重复扣费

3、资料包下载后请先用软件解压，在使用对应软件打开

变频控制下永磁同步电机温度场分析 Abstract Thispaperpresentsathermalanalysisofapermanentmagnetsynchronousmotor(PMSM)undervariablefrequencycontrol.Thethermalfieldinsidethemotorisinvestigatedfromboththeoreticalandexperimentalperspectives.Theeffectsofvariablefrequencyonthethermalperformanceofthemotorareanalyzedindetail.Basedontheanalysis,someeffectivethermalmanagementstrategiesareproposedtoimprovetheperformanceandreliabilityofthemotor. Introduction Permanentmagnetsynchronousmotors(PMSMs)arewidelyusedinvariousindustrialapplicationsduetotheirhighefficiency,highpowerdensity,andhightorquedensity.However,thethermalperformanceofPMSMsisanimportantaspectthatneedstobeconsideredinpracticalapplications,asoverheatingcanleadtoreducedefficiency,increasedpowerlosses,anddecreasedreliability. VariablefrequencycontrolhasbecomeapopulartechniqueforPMSMspeedcontrolinrecentyears.However,theeffectsofvariablefrequencyonthethermalperformanceofPMSMshavenotbeenfullyinvestigated.Therefore,thegoalofthispaperistostudythethermalfieldinsideaPMSMundervariablefrequencycontrolandproposeeffectivethermalmanagementstrategies. TheoreticalAnalysis ThethermalfieldinsideaPMSMcanbeanalyzedusingthefiniteelementmethod(FEM).TheFEMmodelofthemotorincludestheelectromagneticfield,heattransfer,andstructuralmechanicalcharacteristics.Theelectromagneticfieldgeneratesheatinthestatorandrotor,whichistransferredtothesurroundingenvironmentthroughconvectionandradiation. ThethermalperformanceofthePMSMisinfluencedbyseveralfactors,suchastheambienttemperature,coolingmethod,motordesign,andoperationalconditions.Thestatorandrotormaterials,thegeometricaldimensionsofthemotor,andthespeedandtorquerequirementsallaffectthethermalbehaviorofthemotor. ExperimentalAnalysis Tovalidatethetheoreticalanalysis,experimentalmeasurementsofthetemperaturedistributioninsidethePMSMwereconducted.Themotorwastestedundervariousvariablefrequencycontrolconditions,andthetemperaturedistributionsonthestatorandrotorwererecordedusingthermocouples. Theexperimentalresultsshowedthatthet