Weknowthatthesingle-phasemotorcanturnpositiveandnegative,butundernormalcircumstancesthespindlesteeringispositive,canbedividedintorunningcapacitance,startingcapacitance,andnocapacitanceoftheshieldmotor;Sotoday,SenliMotorXiaobianwilltakeyoutoasimpleunderstandingofthepositiveandnegativeconversionmodeofsingle-phaseasynchronousmotors.
Three-phaseasynchronousmotorWecaninvertthephasedifferenceof120°bycommutation,thenwhatistherequirementofsingle-phaseasynchronousmotorinversion?ThefollowingSenlimotorXiaobianwillexplainbrieflyforyou.
Three-phasemotorcomparedtosingle-phase,itcanflexiblydividetheloadofpowerintothreegroups,reducingtheloadofonephase.Forexample,ifweusethreeairconditionersathome,wecansetitsothateachairconditionerusesitsownphasetosavecosts.Let'stakeaquicklookatit.
Whenthesingle-phaseasynchronousmotorstarts,itisa"phase"process.Differentfromthethree-phaseasynchronousmotor,thesingle-phasehasnophasedifferenceandcannotgeneratearotatingmagneticfield.Theroleofaddingcapacitorstothemotoristomakethestartingwindingcurrentofthemotorintimeandspace,aheadoftherunningwinding90electricalangles,formingaphasedifference.
Single-phasemotorisasmallpowersingle-phaseasynchronousmotor,generallyusingsingle-phaseACpowersupply(AC220V)powersupply;Usuallytherearetwophasewindingsonthestator,andtherotorisanordinarysquirrelcagetype;Hereisasimpleunderstandingoftheworkingprincipleofsingle-phasemotorswithSenliMotor.
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