Three-phaseasynchronousmotorTriple-phaseasynchronousmotorIsakindofinductionmotor,bysimultaneousaccess380VThree-phaseACcurrent(phasedifference120Aclassofelectricmotorspoweredbydegrees.Becausetherotorandstatorrotatingmagneticfieldrotateinthesamedirectionandatdifferentspeeds,thereisasliprate,soitiscalledthree-phaseasynchronousmotor.
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Three-phaseasynchronousmotorisalsoknownasinductionmotor,itisanACmotorbytheairgaprotatingmagneticfieldandtherotorwindinginductioncurrentinteractiontoproduceelectromagnetictorque,soastoachievetheconversionofelectromechanicalenergyintomechanicalenergy.Hereisasimpleunderstandingofthecharacteristicsofthenextthree-phaseasynchronousmotorwithSenliMotorXiaobian.
Whenthethree-phaseACasynchronousmotorisworking,itscurrentexceedstheratedvalue,wecallitovercurrent;Ifthetimeistoolong,itwillcausethemotortooverheatanddamage,soweneedtotakenecessaryprotectivemeasures.HereisasimpleunderstandingwithSenliMotorXiaobian!
Inproduction,thecommonlyusedthree-phaseAC,ifthereisnospecialrequirements,generallyuseACmotor,mainlybecausethethree-phaseACasynchronousmotorhasasimplestructure,robustanddurable,andreliablework,easymaintenance,butalsohasthedisadvantagethatthespeedismoredifficult,soweareoftenusedformechanicalcharacteristicsofhardandnospecialrequirementsofthegeneralproductionmachinerydrag.
Duringtheoperationofthemotor,therearetwokindsofheatingphenomenon:thewholemachineheatingandlocalheating.ThefollowingSenlimotorXiaobianwilltakeyoutoasimpleanalysisofthereasonsfortheheatingfailureofthree-phaseACasynchronousmotor.
Thestatorandrotorinthemotorarenotincontact,butwhydoestherotorrotatewhenthestatorwindingoftheACinductionmotorisfedwithAC?Itsworkingprincipleappliestotwomajorelectromagneticlaws:Faraday'sLawandLenz'sLaw.Today,wewillunderstandtheworkingprincipleofthree-phaseasynchronousmotorswithSenliMotorXiaobian.