电涡流缓速器制动力矩的计算方法-何仁

2004049电涡流缓速器制动力矩的计算方法*何仁衣丰艳何建清(江苏大学汽车与交通工程学院,镇江212013)[],,:,,,AComputationMethodforBrakingTorqueofEddyCurrentRetarderHeRenYiFengyan&HeJianqingSchoolofAutomobileandTrafficEngineering,JiangsuUniversity,Zhenjiang212013[Abstract]Basedonthetheoryofelectromagneticfield,thecomputationformulaeforcurrentdensityandbrakingtorqueofeddycurrentretarderarederived1Theseformulaereflectthemutualrelationbetweendifferentdesignparametersandprovideareferenceforthedesignoftheeddycurrentretarder1Keywords:Eddycurrent,Retarder,Brakingtorque,Computationmethod*(GY2002041)200341,20035231,,,,,,:2060,,()TELMAKLAMKLOFTZFVOITH,,,2211(1)8,,8,,NS,4,,2004(26)2AutomotiveEngineering2004(Vol.26)No.2,,,1(,),212:,(),,,22,,,(),,,,(Flemin),33[1],,,3,,,,[2],;,,,,,,,,,,:(1),;(2),R;(3),,L;(4)4,,z,x,4,JHE[3,4]¨@H=J(1)#198#2004(26)2¨@E=-5B/5t=-L(5H/5t)(2)J=RE(3),y,x,¨@Hy=-5Hy/5z(4)¨@Ex=5Ex/5z(5)(5)(2),(4)(1)5Ex/5z=-L(5Hy/5t)(6)5Hy/5z=-REx(7)Ex=EmxejXt(8)Hy=Hmyej(Xt+U)(9)UExHy(6)z,52Ex5z2=-L55t(5Hy5z)(10)(7)(10),52Ex5z2=LR5Ex5t(11)(7)z,52Hy5z2=-R5Ex5z(12)(6)(12),52Hy5z2=LR5Hy5t(13)(8)(11),(9)(13),52Ex/5z2=K2Ex(14)52Hy/5z2=K2Hy(15)LRXj=K2(14)(15)Ex=A1e-Kz+A2eKz(16)Hy=B1e-Kz+B2eKz(17),,Ex=A1e-Kz(18)Hy=B1e-Kz(19)A1B1(z=0)E0,H0Ex=E0e-Kz(20)Hy=H0e-Kz(21)(20)(3),J=R@E0e-Kz=Jm0e-(1+j)z$+jXt(22)$=2/(RLX)[5];X,X=2PNpn/60(23)Np,3Np=4;nJm0[6]Jm0=RBv=RBPn(r2-r1)/30(24)R,R=016@107S#m-1;r1r2;vv=Xn(r2-r1);XnXn=Pn/30(25),,,,Rm0=D/(L0Sp);Em=NI;5=Em/(2Rm0),BB=5Sd=L0d2NI8D(r22-r21)(26)Sp=Pd2/4,d;Sd=P(r22-r21);L0=4P@10-7H/m;D;N,I(24),,:r2=238mm;r1=140mm;h=16mm;8,4,N=350;d=87mm;D=114mm;I=2615A:Rm0=18740818H-1;Em=9275A#t;5=0102475Wb;B=0121T;n=1000r/min,Jm0=13A/mm24B,Xn(r2-r1)[7],,#199#2004(26)25,5dldE=(v@B)dlr1r2E=Qr2r1dE=BXn(r22-r21)/2(27)dldT=lBdidl,,,,,di=(Ie/2P)dHIe/2PdldR=Qdl2Pl$Q(Q=1/R)r1r2R=2Qr2r1Q2Pl$dl=QP$lnr2r1(28)T=2Qr2riBldlQ2P0di=BI(r22-r21)(29)(27)(29)TXn=2EI=2E2/R(30)(30)TXn,(27)(28)(30),T=P$(r22-r21)22Qlnr2r1B2Xn(31)$=2/(RLX)(23)(25)L0=4P@10-7(26)(31)T=6P3d4N2I2480lnr2r1D2nLrQNP@10-10(32)Lr,100~500r1r2dD;QLr,,,1/2,,88T,,dNIr2r1DQLrNpn,1,1/r#min-15007508001000/N1m1484152315421343/N1m12251500154917331,,,(800r/min),,,,,,,,,B,5,,,,,,,1,,11,2002(11)211:,1997311,1998,20(6)4Venkataratnamk1AnalysisofEddy-currentBrakeswithNonmag-neticRotors,IEEproc11977,124(1)5[],11:,2001611:,19937,11:,2000#200#2004(26)2