交流异步电动机的基础

ACinductionmotorsarethemostcommonmotors

usedinindustrialmotioncontrolsystems,aswellasin

mainpoweredhomeappliances.Simpleandrugged

design,low-cost,lowmaintenanceanddirectconnec-

tiontoanACpowersourcearethemainadvantagesof

ACinductionmotors.

VarioustypesofACinductionmotorsareavailablein

themarket.Differentmotorsaresuitablefordifferent

applications.AlthoughACinductionmotorsareeasier

todesignthanDCmotors,thespeedandthetorque

controlinvarioustypesofACinductionmotorsrequire

agreaterunderstandingofthedesignandthe

characteristicsofthesemotors.

ThisapplicationnotediscussesthebasicsofanAC

inductionmotor;thedifferenttypes,theircharacteris-

tics,theselectioncriteriafordifferentapplicationsand

basiccontroltechniques.AN887ACInductionMotorFundamentalscreatednaturallyinthestatorbecauseofthenatureofAuthor:RakeshParekhthesupply.DCmotorsdependeitheronmechanicalorMicrochipTechnologyInc.electroniccommutationtocreaterotatingmagneticfields.Asingle-phaseACinductionmotordependsonextraelectricalcomponentstoproducethisrotatingINTR