异步电动机单边磁拉力的分析与计算1

:2002203206:(19672),,,2000..:1672-3961(2004)01200592041,1,2,2(11,250061;21,255030):,,.,.:;;:TM351:AToanalyzeandcalculateunilateralmagneticforceofaninductionmotorLIUZhi2zhen1,YANGZhi2jian1,XIAOLing2,YULi2chun2(1.SchoolofElectr.Eng.,ShandongUniv.,JinanCity,250061,China;2.ZiboTractionMotorCo.,Ltd.,Zibo255030,China)Abstract:Severalcalculatingformulasofunilateralmagneticforceofaninductionmotoraresimplydeduced.Basedonabroadandpracticaldesignexperience,akindofreasonablecalculatingmethodisproposed.Byan2alyzingandcomparingthecalculatingresultsoftheformulas,thevalidityofthemethodpresentedisshowed.Keywords:inductionmotor;unilateralmagneticforce;analysisandcalcuation0,,.,,,,.,,,,2,,,.,,,,.,,.1111,[1],:F0=29.4DL/gBg70002e0N,(1)D,L,gcm,BgGs.341Vol.34No.1()JOURNALOFSHANDONGUNIVERSITY(ENGINEERINGSCIENCE)20042Feb.20042,,:F=B/0.52S9.81104N(2)B(T),S(m2).,,,,:B2(-e0cos)=B1(+e0cos)=B(3):FM=(B20.5)2-(B10.5)2Sp9.81104N(4)(3)2-e02cos2(2Ee02cos2),:B2-B1=2Be0cos/(5)B2+B1=2B(6)(5)(6)(4):Fm=Sp(0.5)24B2e0cos9.81104N(7)P,:Fm=P10Fmcosd(8)Sp=pDL2P(7)(8),:Fm=pDLB0152e09.81104N(9)p:,0.60.74,0.7.,,(9).[1],=0.7,Fm=3DLB0.72e09.81104N(10)[2],=0.43,Fm=DLB0.52e09.81104N(11)=p0.3.1.2[3],:F=1/20B2A(12)-t(),1:()=-ecos(-)=i1-cos-)(13)=e/i,i:.,2PP,:H,t=H1cos(P-1)(14):A()=2DdH()d=Alcos(P-1+/2)=/pH1cos(P-1+/2)(15)1,,:1Fig.1Structurediagramofeccentrichigh2orderhaimonicsinarigapmagneticfieldH()()-H(0)(0)=D/2OA()d(16)B()=OH()=(){H(0)(0)+D20A()d(17)()=0/()=0i1+cos(-)(18),20()d=0/i220B()d=0,:60()34H(0)(0)=-12D2201+cos(-)0A()dd(19)(18)(19)(17),:B()=0iPp1+cos(-){0A()d-1220[1+cos(-)]0A()dd}(20)B1=0H1i=0ipA1,(20),:P=1,B()=B1cos(-1)-2B12cos(1-)cos(-)+B12cos(2-1-)(21)P1,B()=B1cos(P-1)+B12cos[(P+1)-1-]+B12cos[(P-1)-1+](22)dA=lidx=li(D/2)cos(-)d(12):dF=B2()/20li(D/2)cos(-)d(23),:Fm=Dli401220B2()cos(-)d(24)(21)(22)(24),:P=1,:Fm=pli20B21/2(25)P1,:Fm=pli20B21P(26)1.3[1],:F=B2DL46.3ge0(27)=0.475()=0.4()1.4,,,(25)(26),,,.P=1,:Fm=pli20B21/2(28)P1,:Fm=pli20B21P(29)=01475(),=014()21,=e0/g=0.1,Bg=7000Gs.1Fig.1ComparisonofpracticalcalculationofunilateralmagneticforceY400-2D=354mm,L=530mmY400-4D=354mm,L=530mm(10)5521N4820N[1]2(11)1699N2967N[2]21/2(27)1352N2362N[3]4,21/2(28),(29)1364N2382N1,:613,,(10)(2).,,2,[2]1/2,.,,P=1P1,(21)(22),(P+1)(P-1),2,,(25)(26)[2]21/2.(28)(29),.,(28)(29),,,.:[1].[M].:,1977.[2].[M].:,1984.[3].[M].:,1987.(:)(14).,(001),,.,,,4,5.,,,,;,,,,,.,,,.4(1)09CuPTiRE,,,-40.(2),,;,,.(3)09CuPTiRE-20.:[1]G,D.[M].:,1990.[2],.[M].:,1989.[3].[M].:,1982.[4],.16MnL[J].,1998,5:29231.[5],,.[J].,1999,3:48253.(:)62()34