中小型三相感应电动机单笼转子电磁计算程序

1、2.3.4.5.6.7.8.9.10.12.13.14.15.16.17.18.中小型三相感应电动机（单笼转子）电磁计算程序额定数据及主要尺寸输出功率Pn外施相电压Un*Y接法Un功电流IKW效率刀功率因数cos（j）极对数p定转子槽数PnmUnUnV3,A接法UNUN按照设计任务书的规定按照设计任务书的规定Z1、Z2定转子每极槽数Zp2极距Zp1乙2pZ22p定转子冲片尺寸定转子齿距节距y转子斜槽宽每槽导体数（见图1)Di12pt1Di1乙D2Z2以槽数计bsk（一般取一个定子齿距t1,也可按需要设计）双层线圈单层线圈Ns1=2X每线圈匝数Ns1=每线圈匝数每相串联导体数绕组线规（估算）槽满

2、率Nt1AciNs1乙maIia1J111（定子电流初步值）1KWIcIcos槽面积As2r21b!12(hs槽绝缘占面积双层绕组Att(2hsr212r21b11)单层绕组At(2hsr21)槽有效面积AefAsAt槽满率SfNt1Ns1d100%Aef19.铁心长lt铁心有效长无径向通风道leflt2定转子径向通风道不交错lsfltnv1bw定转子径向通风道交错lsf1t(nv1bv1nv2bv2)bv由图9查出净铁长无径向通风道lFekFe1t有径向通风道JkFe（lt门丫上）20.绕组系数Kdp1Kd1Kp1分布系数Kd1短距系数Kp1p121 .每相有效串联导体数磁路计算22 .每极

3、磁通一sin-2q1sin2sin2N1Kdp1EiEi4KNmKdp1fN12.22fN1（小其中Ei（1L）Un（假设Ke1l）23.每极齿部截面积定子At1KFeltbtZp1转子人2KFeltbt2Zp2对于非平行齿，则bt取离最窄齿三分之一齿高处的齿24.轲部截面积AjiKFelthji定子轲部计算高度圆底槽hjiDlDi1hsir21j12s13平底槽hji巴乌hsi2转子AjiKFelthj2一、D2Di2r222转子轲部计算局度圆底槽hj2hs2-dv2233D2Di22平底槽hj2-hs2-dv223对于2极电机，Di2以三分之一Di2代入25 .空气隙面积Alef-LB26

4、 .波幅系数Fs（可先假定饱合系数Ks,再从图2中查出Fs）Bav27 .定子齿磁密BtiFs28 .转子齿磁密Bt2FsAt229 .定子物磁密ji2Aji30 .转子辆磁密Bj2i2Aj231 .空气隙磁密FsA32 .根据Bti、Bt2、Bji、Bj2、Bs从磁化曲线（表2或表3）中查出Hti、Ht2、Hji、Hj233 .齿部磁路计算长度i7E子圆底1日Ltihiih2i1r2i3半开口平底槽Ltihiih2i开口平底槽Lt11转子圆底1日Lt2hi2h22223平底槽Lt2h12h2234.轲部磁路计算长度定子Lji转子Lj2(Dih”12p2(D2hj2)12p235.有效气隙长度

5、efK1K2半闭口槽和半开口槽开口槽36 .齿部磁压降定子转子37 .轲部磁压降定子转子lxt(4.4O.75bo)K-二2t(4.4O.75bo)b0Kt(5bo)t(5bo)boFt1Ht1Lt1Ft2Ht2Lt2Fj15田上也;Fj2Cj2Hj2Lj2Cj1、Cj2从图3查出38.空气隙磁压降F39.饱合系数KsFFt1%F（Ks值与26项中假定的Ks应相符，否则重新假定Ks,并重新计算2639项中各有关量，直至相符。要求精度w土1%）4O.总磁压降FoFFt1Ft2Fj1Fj241.满载磁化电流Im2pFo。巾”42.满载磁化电流标么值*ImImIKW43.励磁电抗标么值三.参数计算*

6、Y八ms*Im44.线圈平均半匝长（见图4)单层线圈lcIBcBKc双层线圈2Cs45.46.47.48.49.50.式中IBCsIt2di为直线部分长（Kc为经验值，2极取胜y2coscos1.16;Di12(h01hn)双层线圈端部轴向投影长单层线圈端部平均长漏抗系数Cx定子槽比漏磁导KU1、Kli查图5,定子槽漏抗无径向通风道时有径向通风道时定子谐波漏抗siU1、*s1d10.010.03m,为线圈直线部分伸出铁心的长度,机座大、极数少者取较大值）4、6极取1.2;8极取1.25。或按经验取1sin2h21r21fdCssinb112r21bn2r212bt1（单层同心式或交叉式线圈Ie

7、2d1Kc2_0(N1Kdp1)lefPNmpUNKU1U1KL1L1L1从附录一中查出2mpL22Cx乙Kdp/eflt11112_0.263(N1Kdp1)lefPNpu；B取平均值）103It1It1nwbbv1（bw是通风道损失宽度，从图10查出）2m12sCx(s从图13或表5中查出)2efCKs51.定子端部漏抗双层叠绕组*XE11.2(d10.5fd)CXlef单层同心式*XE1(Ie0.64y)0.67CxlefKdp1单层同心式（分组的）、交叉式*XE1(Ie0.64y)0.472-CxlefKdp1单层链式*XE10.2VCxlefKdp152.定子漏抗*Xs1X1*XE1

8、53.转子槽比漏磁导s2U2L2IU2、L2从附录一查出）54.转子槽漏抗*s22mplt2Z2lef无径向通风道时1t21t2有径向通风道时1t21t2nv2bv2（bv2从图10查出）55.转子谐波漏抗m1R2izefsCx(R从图14或表6查出）56.转子端部漏抗*E20.757(1e电TT1.13dr)Cx2p57.转子斜槽漏抗*Xsk_bsk2*0.5(k)2X2t258.转子漏抗2Xs2X2Xe2_*Xsksk59.总漏抗60.定子直流相电阻2Ni1c对A、E、B级绝缘0.0346106m,铜0.0217106m对F、H级绝缘0.0392106m,铜0.0245106m61.定子相

9、电阻标么值IkwRiUn62.有效材料定子导线重量GwCIcNsiZiAciNm式中C为考虑导线绝缘和引线重量的系数，漆包圆铝线取漆包圆铜线取1.05;63.为导线密度，铝为硅钢片重量转子电阻导条电阻折算值端环电阻折算值GFeRbRb2.7X103kg/m3,铜为8.9X103kg/m3UDi)2Fe（为冲剪余量，取5mm)Kb1BAbDrZ24mld)2Z224m1(NKdp1)2P2ArZ2因叠片不整齐造成导条电阻增加而引入系数Kb,铸铝转子为1.04,铜条转子为1.0对于A、E、B级绝缘：紫铜0.0217106m,黄铜0.080410m,硬紫铜杆0.02781060.0434106硅铝(

10、0.0620.0723)106m对于A、E、B级绝缘：紫铜0.0245106m,黄铜0.090810m,硬紫铜杆0.0314100.0491106硅铝(0.070.0816)10导条电阻标么值*RbIkwRbUn端环电阻标么值*RrIkwF转子电阻标么值*R2*Rb*Rr四.工作性能计算64.满载时定子电流有功分量标么值.*I1P（假定效率65.满载时转子电流无功分量标么值1X*2Iip1(*21XIip)X八ms、一一，._*_*_*66.满载时定子电流无功分量标么值I1QImIXmi67.满载电势标么值Ke1(11PR111QX1)此值应与22项假定相符，否则重新假定Ke并计算2267项，

11、直至误差小于土0.5%Bt101-Bt11LBt201-Bt21LBj1010b11Bj1LBj2010Bj21LB0LB1LFt10Ht10Lt1Ft20Ht20Lt2Fj10HLj10j1Fj20HLj20Lj2F0kB00*101ImX1F0Ft10Ft20Fj10Fj2068 .空载电势标么值69 .空载时定子齿磁密70 .空载时转子齿磁密71 .空载时定子辆磁密72 .空载时转子辗磁密73 .空载时气隙磁密74 .空载定子齿磁压降75 .空载转子齿磁压降76 .空载定子辆磁压降77 .空载转子辆磁压降78 .空载空气隙磁压降79 .空载总磁压降F0080 .空载磁化电流81 .定子电

12、流标么值Im02PF000.9“2.*2I1,I1PI1Q、，*.*.定子电流实际值11111KW82.定子电流密度I1aiNtiAd83.线负荷m.NA1I1Du84.转子电流标么值转子电流实际值I2IKWmN1KdP1z2端环电流实际值85.转子电流密度导条电密I2AB端环电密IRAR86.定子电气损耗*Pcu1*2I1*Ri_*Pcu1Pcu1PN87.转子电气损耗r*PAl22*I2R2*一PAl2PAl2PN88.杂散损耗铸铝转子:0.025（2极），0.02（4极），0.015（6极），0.01（8极和10极）铜条转子:0.005或参考相近规格的实测值PsPsPN89.机械损耗参考

13、实际试验值或按下列公式计算Pfw13(1D1)(3)2(D1)4103P二极防护式：四极及以上防护式：二极封闭型自扇冷式：四极及以上封闭型自扇冷式:3233Pfw5.5(一)(D2)10P3233Pfw6.5(一)(D2)10PPfw(-)2(D1)4103P机械损耗标么值*PfwPfwP90.定子铁损耗定子齿重量Gt2PAtiLt1Fe定子轲重量Gj4PAj1Lj1Fe(4)定子齿损耗定子齿损耗定子铁损耗铁耗校正系数定子铁损耗标么值91.总损耗标么值92.输入功率_*PN193.效率*PN1此值应与94.95.转差率96.转速97.最大转矩PFetpFejPFekiPhetGt损耗系数Phe

14、t根据Bt10查表4得到PhejGj损耗系数Phej根据Bj10查表4得到k1PFetk2PFej*PFe*pcu12.5（半闭口槽），3.0（开口槽）2.0（半闭口槽）2.5（开口槽）PFePn*PAl2PsPfwPFe64项假定值相符，否则重新假定并计算6493项，直至误差小于土0.5%I*11PcosI1SnnN*PFer*pAl2,*1PAl2PsPfwPFerPFetrPFejrPN叱(1Sn)*Tm1Sn2*22(R1YR1X)起动性能计算98.起动电流假定值*Ist(2.53.5)TmIKW99.起动时定转子槽磁势平均值NsiFstIstS10.707(Kuia12Kd1-1I1

15、)1Z2100.空气隙中漏磁场的虚拟磁密Blc0.642.5Jit2由Bl查图18可得漏抗饱合系数Kz齿顶漏磁饱合引起的定子齿顶宽度的的减少Csi(t1b01)(1Kz)102.齿顶漏磁饱合引起的转子齿顶宽度的的减少Cs2(t2b02)(1Kz)103.起动时定子槽比漏磁导s1(st)KU1(U1U1)KL1L1U1的计算见附录104.起动时定子槽漏抗*Xs1(st)s1(st)*Xs1s1105.起动时定子谐波漏抗*X1(st)*KzX1106.起动时定子漏抗*X1(st)*Xs1(st)X*1(st)XE1107.考虑集肤效应，转子导条相对高度0.987103J诧fbs2Bh02式中：hB

16、转子导条的高度，对铸铝转子不包括槽口高度bB转子导条与转子槽的宽度之比，对铸铝转子其值为1,窄长的铜条其值为0.9导条的电阻率。对A、E、B级绝缘，铝为0.0434106m,铜为0.0217106m；对F、H级绝缘，铝为0.049110m,铜为0.024510f转子电流频率，起动时其等于定子电流的频率108.转子电阻增加系数和电抗减少系数Kf、Kx查图15及图16KfR-r0KxXX0109.起动时转子槽比漏磁导s2(st)(U2U2)KxL2U2的计算见附录一）110 .起动时转子槽漏抗111 .起动时转子谐波漏抗112 .起动时转子斜槽漏抗*s2(st)*Xs2(st)Xs2s2*X2(s

17、t)KzX2Xsk(st)KzXsk113.起动时转子漏抗一*X2(st)一*一*一*Xs2(st)X2(st)XE2一*Xsk(st)114.起动时总漏抗X(st)X1(st)X2(st)115.起动时转子总电阻R2(st)Kf(F)()RBrRIBB116 .起动时总电阻117 .起动时总阻抗-*-*-*RstR1R2(st)r*72*2ZstRstX(st)118 .起动电流stIkw*Zst此值应与98项假定值相符，否则重新假设并计算98118项，直至误差小于3%119 .起动电流的倍数ist11_*R2(st)120 .起动转矩的倍数Tst*t(1Sn)Zst六.计算用图131415

18、16171819202122铜铝导体标称直径mmmm2铜铝漆膜厚度mm经支重里kg/km20c时电阻Qm经支重里kg/km20c时电阻Qm0.500.19641.8650.09270.5980.15010.030.060.530.22062.0400.08230.6520.13330.040.070.560.24632.2750.07360.7040.11910.040.070.600.28272.5890.06390.8100.10350.040.070.630.31172.8220.05790.8950.09370.040.070.670.35263.2190.05111.0240.082

19、70.040.08(0.69)0.37393.4100.04811.1020.07790.040.080.710.39593.6160.04611.2100.07460.040.080.750.44184.1140.04121.2840.06670.050.09(0.69)0.37393.4100.04811.1020.07790.040.080.710.39593.6160.04611.2100.07460.040.080.750.44184.1140.04121.2840.06670.050.09(0.77)0.46574.2500.03901.3700.06320.050.090.800

20、.52274.6100.03611.4830.05850.050.09(0.83)0.54104.9200.03351.5910.05430.050.090.850.56755.2350.03191.6900.05170.050.090.900.63625.9360.02841.8590.04600.050.09(0.93)0.67936.1600.02661.9800.04300.050.090.950.70886.7640.02552.1000.04120.050.091.000.78547.2400.02292.3140.03710.060.111.060.88258.5050.0206

21、2.6160.03330.060.111.120.98528.9400.01842.8770.02980.060.111.181.09369.8900.01653.1420.02680.060.111.251.227211.200.01473.5530.02380.060.111.301.327312.100.01363.8330.02200.060.11(1.35)1.431413.000.01284.1230.02040.060.111.401.539414.000.01174.4240.01890.060.11(1.45)1.651315.000.01094.7420.01760.060

22、.111.501.767216.100.01025.0640.01650.060.11(1.56)1.911417.350.00945.4650.01520.060.111.602.010618.120.00895.7140.01440.070.121.702.269820.460.00796.5350.01280.070.121.802.544722.910.00707.3100.01140.070.121.902.835325.500.00638.0060.01020.070.122.003.141628.210.00579.1400.00920.070.122.123.529931.52

23、0.00509.8510.00820.070.122.243.940836.130.004511.270.00730.070.122.364.374441.350.004112.390.00660.070.122.54.908744.630.003613.680.00590.070.12七.计算用表QZ-2、QZL-2厚绝缘聚酯漆包圆线表1BT0.000.010.020.030.040.050.060.070.080.09B亍0.401.381.401.421.441.461.481.501.521.541.560.400.501.581.601.621.641.661.691.711.741

24、.761.780.500.601.811.841.861.891.911.941.972.002.032.060.600.702.102.132.162.202.242.282.322.362.402.450.700.802.502.552.602.652.702.762.812.872.932.990.800.903.063.133.193.263.333.413.493.573.653.740.901.003.833.924.014.114.224.334.444.564.674.801.001.104.935.075.215.365.525.685.846.006.166.331.101

25、.206.526.726.947.167.387.627.868.108.368.621.201.308.909.209.509.8010.110.510.911.311.712.11.301.4012.513.113.614.214.815.516.317.118.119.11.401.5020.121.222.423.725.026.728.530.432.635.11.501.6037.840.743.746.850.053.456.860.464.067.81.601.7072.076.480.885.490.295.01001051101161.701.801221281341401

26、461521581651721801.80B25=1.57T(D24)电工硅钢溥板（0.5mm）的磁化曲线表3BT0.000.010.020.030.040.050.060.070.080.09_BT0.401.371.381.401.421.441.461.481.501.521.540.400.501.561.581.601.621.641.661.681.701.721.750.500.601.771.791.811.841.871.891.921.941.972.000.600.702.032.062.092.122.162.202.232.272.312.350.700.802.39

27、2.432.482.522.572.622.672.732.792.850.800.902.912.973.033.103.173.243.313.393.473.550.901.003.633.713.793.883.974.064.164.264.374.481.001.104.604.724.865.005.145.295.445.605.765.921.101.206.106.286.466.656.857.057.257.467.687.901.201.308.148.408.688.969.269.589.8610.210.611.01.301.4011.411.812.312.8

28、13.313.814.415.015.716.41.401.5017.218.018.919.920.922.123.525.026.828.61.501.6030.733.035.638.241.144.04750.053.557.51.601.7061.566.070.575.079.784.589.594.71001051.701.801101161221281341411481551621701.80BT0.000.010.020.030.040.050.060.070.080.09BT0.500.700.720.740.760.780.800.820.840.870.890.500.

29、600.910.930.960.981.011.031.061.081.111.130.600.701.161.191.221.251.281.311.341.371.401.430.700.801.461.491.521.561.591.621.651.681.721.750.800.901.781.811.841.881.911.941.972.002.042.070.901.002.102.142.192.232.282.322.362.402.452.491.001.102.532.572.622.662.712.752.802.852.902.951.101.203.003.053.

30、103.163.213.263.323.383.443.501.201.303.563.623.673.733.783.843.913.984.064.131.301.404.204.284.364.444.524.604.704.804.905.001.401.505.105.225.345.465.585.705.845.986.126.261.501.606.406.536.666.806.937.067.187.287.417.521.601.707.647.707.777.837.907.968.008.048.078.111.701.808.158.248.338.428.518.

31、608.708.808.909.001.801.909.109.209.309.409.509.609.749.8810.0010.201.90三相600相带谐波比漏磁导系数2S表5q=2315/64/6NS0.02650.02050.0199q=3318/97/96/9NS0.01290.01030.00900.0097q-43111/1210/129/128/122S0.00820.00660.00550.00540.0061q-53114/1513/1512/1511/1510/15NS0.00590.00500.00380.00340.00380.0044q-63117/1815/18

32、13/1812/1811/18NS0.00470.00380.00250.00290.00350.0035q-83122/2420/2418/2416/2415/24NS0.00350.00230.00160.00180.00270.00265笼形转子谐波比漏磁导系数2R表6Z2/2p345678910,R0.0970.0530.0340.0230.0170.0130.0100.0083Z2/2p12152025304050oo2R0.00570.00360.00210.00130.00090.00050.00030定子槽的比漏磁导附录一常用梢形比漏磁导计算h012hnU1b01b01b11对左图:L1查图7h010.58%U1b01Cs1Cs11.5bo1对左图:h01b010.785L1查图7h010.58h11U1b01CS1Cs10.5b01.转子槽的比漏磁导1h02fh22对左图:h02b02L2查图7h02b02S2b02十h02h121对左图:h02b022hi2L2-Ll查图7b02bl2h02b02对左图：U2h02.h02b02b02-1-bi2hi2h22L2U22hi2b02bl2h02b02(CCs2L查图7（