感应电动机设计流程..

1、感应电动机设计流程3803.1电机的基本尺寸数据3.1.1 定，转子尺寸定子尺寸单位mm转子尺寸单位mmDi2b02b1r1br2hR0hR1hR2t2hC2h12bT2d24810553.00.51.321.713.26201230.623302135.23.2电动机的设计计算方案1名称公式结果1.功率KW5.5U1=线电电压（接法）2.外施相电压5=线电压（A接法）04823.输出供电流r_P2X103KW_m1xU14.效率8555.功率因数cos申'0846.极数Qi36327.定，转子槽数8.定,转子每级槽数9.定，转子尺寸10.极距兀xDi1t_cmpP10.67611.定

2、子齿距兀xDt_mm1Q1118612.转子齿距12_gDi2mm2Q21.32613.节距y814.转子斜槽宽bskcm2.78415.每槽导体数双层线圈Z1_2X每圈匝数48单层线圈Z1_每圈匝数16.每相串连导体数佥_叱血m1xa157617.绕组线规18.槽满率19.铁心长20.绕组系数21.每相有效串联导体数NxS=I111a1xA，Sb=弓Jh）+于S.=C.（2h，+兀R+2R+b）iiss1S.=C.（2h'+兀R）iiS=SS-SiSigN.x乙xd2Sf=11fSeleff=1+2g1eff=1-Sxbk1'Ife=Kfex1Kdp1=Kd1xKP1.（a）

3、sinxq12®.aqxsm12或查表1Kp1=sin（Bx90。）或查附表2Z血Kdp1mmmm2mm2mm2mm2mmmmmmmm1.2720.9127.215.75111.4579.3200200.81840.9460960.9850.8888544.896ExlO8222fxZ血©0.534x10622.每极磁通Ei=（'l）U1085*38023.齿部截面积ST1二bT1xlFexQpiST2二bT2XlFeXQp291.0891.716.12SC1二hc1'XlFe圆底槽字-hs+3R0.87636.984平底槽字-hs转子Sc2-h2'

4、xlFeD_D12圆底槽h2'=D一a_hR+_r2dk222R323k224.轭部截面积平底槽h2=D2_D2_hR_2dk2c22R3k22.0125.空气隙面积Sxlgpeff21426.波幅系数口最大甘甘匚Fs=平均高斯1.5327.定子齿磁密BT1=Fs冷咼斯897028.转子齿磁密BT2=FS咼斯890929.定子轭磁密BC1x咼斯C12SC11656330.转子轭磁密厂1亠廿rBe2-2xS冋斯721931.空气隙磁密B=FSg冋斯gSSg381732.各部分磁路每厘米长atT1Acm422所需安匝数Acm4.1633-磁部磁路计算长度34.轭部磁路计算长度35-有效气隙

5、长度36.磁部所需安匝数37.轭部所需安匝数38.空气隙所需安匝数39.饱和系数40.总安匝atciatC2hT2hR1+hR2+3rhT1'hs1+hs2hT1hs11hT1h+hs2+3RhT2'hR1+hR2j(D1Jc1-2M2+hc2')gegXKc1XKc2ATT1atT1XhT1'ATT2atT2XhT2ATC1二C1XatC1XlC1ATC2二C2XatC1XlC2AT0.8xBxggg°eFATT1+ATt2+ATgTATgAcmA；cm厘米厘米安匝安匝安匝安匝安匝7142.821.5962.32.26552.670.05466.73

6、59.5684855.271661.098ATATT1+ATT-+ATC1+ATC2+ATT1T2C1C2g安匝23641.满载磁化电流r2.22ATxpm42-满载磁化电流标么值43.激磁电抗m1Xz血XKdp1i=hmtIKW_1Xm丁I/m安培1280.2653.7744.线圈平均半匝长45.双层线圈端部轴向投影长46.单层线圈端部平均长47.漏抗系数48.定子槽单位漏磁导49.定子槽漏抗50.定子谐波漏抗单层线圈1=LB+KSxtYBSY双层线圈1=LB+2CSCS=j2cosa吐D+2(h0+hs1)+h2+Rp42.28厘米厘米厘米8.1410.980.674cosa=plsin2

7、a.b1+2Rsina=s1b1+2R+2bT1f=csxsina厘米0.7381s=2d1+KSXTYC=2.63XfXP2Xq(Z心XpXU12X105九S1=Ku1X九U1+KL1X九L1x=11Xm1XpXS1cS11efXKdp12XQ1X无径向通风道11=l有径向通风道11=1-nK1xbK工SCXT52ge丿KdpNF,0.07461.1660.43Cx厘米200.608Cx51.定子端部漏抗52.定子漏抗53.转子槽单位磁漏抗54.转子槽漏抗55.转子谐波漏抗56.转子端部漏抗57.转子斜槽漏抗58.转子漏抗59.总漏抗60.定子相电阻61.定子相电阻标么值62.有效材料双层绕

8、组x1=1.2°1+0.5fd)CJX0358Cxelleff单层同心式©=0.67fl-0.64j)sYIleffXKdp12丿单层同心式,交叉式xe1=0.47fl-0.64tJsYIleffXKdp12丿单层链形绕组.=0.21l)sIleffXKdp12丿0.104162leffXQ2有径向通风道12=l无径向通风道12=/-nk2Xbk2”bk2喳附图13YR-C'xT52ge丿Kdp12XF0.605Cx200.694Cxxe2leff+11.13p丿0.119CxxSK=0.5x2二xs2+xd2+xe2+%x=x1+x2RPXlzXZ1Z1wXSXN

9、、X100r1=R1每台定子导线重GCU=CxlzxZ1xQ1xSNxyX10-5每台硅钢片重Gfe二KfeXlX（D+5）2x7.8x10-3公斤1.53Cx0220.3244.10.05288654.5763.转子电阻64.满载电流有功部分65.满载电抗电流66.满载电流无功部分67.满载电势68.空载电势69.空载定子齿磁密70.空载转子齿磁密71.空载定子辘磁密72.空载转子辘磁密73.空载气隙磁密74.空载定子齿安匝75.空载转子齿安匝导条电阻RB=KISB%Q2丿端环电阻导条电阻Rr二K2.6005导条电阻标么值rB=RB端环电阻标么值乙=RrUkjw转子电阻标么值r2=rB+rR

10、满载电流有功部分ip=t满载电抗电流ix二KmxxxC1+(KmXxXTp)2iR=i+iRmx0.03290.00060.03311.1690.5231.0270.788Xr1+Trx无1)1£B=0BT101£T1L1£B=亠BT201£T2L1£B=BC101£C1L1£B=0BC201£C2L1_£B=0Bg01£gLAT=at*hT10T10T1AT=at*hT20T20T20.85720.97244高斯高斯高斯高斯高斯安匝安匝10136100671865981574313882512

11、.51276.空载定子轭安匝AT二C*at*l'C101C10C1安匝108.9777.空载转子轭安匝AT二C*at*l'C202C20C2安匝6.57878.空载空气隙安匝AT二0.8gBg0eg0安匝18879.空载总安匝AT二AT+AT+AT+AT+AT安匝0T10T20C10C20g0324.88580.空载磁化电流2.22AT*p=0m0m*Z*K1血dp1安培1.76581.定子电流82.定子电流密度83.线负荷84.转子电流85.转子电流密度86.定子铝损耗87.转子铝损耗i=Ji2+i21PRI二i*I11KWA=i1a*N*S111A/cmm*Z*IA=11兀

12、*Di1ip2+ix2,-m*Z*KI二iI1dp122KWQ2P二i2*rAll11P=P*P*103Al1Al12P二i2*rAl222P二P*P*103Al2Al221.409安培6.795.33A/cm2A/cm778.474149128315.163.2673.0880.103566.50.054297对铸铝转子PS二0.01口0.030.010.0588.杂散损耗89.机械损耗90.铁耗91总损耗92.输入功率93总损耗比94.效率95.功率因数96转差率对铜条转子PS二0.005PS=PSXp2X1034极及以上封闭型自扇冷式Pfw二Pw=Pfw-用P2X103V=2p*S*lC

13、1C1C1PT1PT2P=p*VT1T1T1P=p*VC1C1C1P=Kp+KpFe1T12C1PPFE=-FE-FEP2X10355厂6丫fDIP丿110丿4乙P=PAL1+PAL2+PFe+PS+PfwP1=1+工P工P卫P1COS申=丄ixnPal2Sn=1+PAL2+旋转铁耗+PS+Pfw29.320.0053581.45292.150.020.071311.62920.8370.73250.0120.181.180.150.850.834旋转铁耗=PFe-(pt1+PC)1.397.转速n=120f(1-Sn)(转分)712.598.最大转矩n2r1+lr12+x2(倍)1.2521

14、99.起动电流开始假定值/J=(25*5)TmXIKW(安)100.起动时漏抗磁路饱和引起漏抗变化的系数查图101.齿顶漏磁饱和引aT(st)=gfX0707KU1+a1-338182067pC=0.64+2.5C0.9550.284起定子顶宽度的减少CS1=(t1-b01)(1-KZ)0.416102.齿顶漏磁饱和引起定子顶宽度的减少CS2=(t2-b02)(1-KZ)103.起动时定子槽单九siOKU1g宀1)+KL1泳Li1.045位漏磁导A九U1按槽形查附图1104.起动时定子槽漏X,()=込X,1'st久s1si0385Cx105.起动时定子谐波漏抗X1(st)=KZXxdI

15、0.4Cx106.定子起动漏抗X1(st)=Xs1(st)+Xd1(st)+Xe11.143Cx107.考虑导挤流效应的转子导条相对高度0.1987h1.55108.转子挤流效应系rnLo0.325109.起动时转子槽单位漏磁导110.起动时转子槽漏111.起动时转子谐波漏抗112.起动时转子斜槽漏抗113.转子起动漏抗H4.起动总漏抗115.转子起动电阻116.起动总电阻117.起动总阻抗118.电动电流119.起动转矩Xo入S2(sJ=U2(sJ+入L2(sJ0.461九U2(st)U2一从U2A入U2按槽型查附图1九L2(sJ二十九L2-0九()S2s"-S2(st丿九-S2S

16、2Xd2(st)二KZ%Xd2XSK(st)二KZ%XSKX2(st)=XS2(st)+Xd2(st)+Xe2+XSK(sJx(st)二X1(st)+X2(st)IlB丿z2c)+x2C)KWst=z(st)stBlBIrB+rR4电动机的改进方案0.0970.3640.24Cx0.458CxCx0060220.0860.1380.23209154名称公式方案2万案31.额定线电压3403402.外施相电压Ui=线电压（Y接法）196.299196.2993.输出供电流r=P2X103KW=m1xU19.3399.3394.定，转子槽数5.功率因素6.极数7.效率8.绕组线规9.导体并绕根数1

17、0.每槽导体数11.槽满率12.铁芯长13.定子齿磁密14.转子齿磁密15.定子轭磁密16.转子轭磁密17.空气隙磁密18.空载定子齿磁19.空载转子轭磁Qi363632320.8310.847双层线圈Z1二2x每圈匝数GNx乙xd2Sf=1-/SeB一f"-1QSCI厂1B=xC22SC2B=FSgSSg1-8B=oBT101-8T1L1-8B=oBT201-8T2L0.8730.8812.061.8720240.79740.7980514810414803913467.1329457.1425950.181463851284786344.9714075.4127486.19133

18、16.6611318.235758.9261304115249161220.空载定子轭磁1-8B=oBC101-8C1L139181512895.4521.空载转子轭磁1-8B=一BC201-8C2L119881710867.2322.空载气隙磁密1-8B=oBG01-8gL6032.7385576.76723.定子电流密度3.8294.57724.线负荷m*Z*IA=1_11兀*Di1215.087254.2125.热负荷823.681163.5626.转速N=S（转分）1471146227.最大转矩倍数Tm=4.0143.67528.起动转矩倍29.起动电流倍数2.0031.897stis

19、t=也6.9666.783电动机在运行使产生损耗，这些损耗转变成热能，引起电机发热，电动机的温度过高会使绝缘迅速老化，绝缘性能和机械强度降低，使使用寿命大大缩短，严重时会烧坏电机，为了限制发热对电动机的影响，使电动机的温升不超过一定的数值，一方面要控制电机各部分的损耗，使发热减少；另一部分改善电动机的冷却系统，提高其传热和散热的能力。因此可见，防治电动机因过热而损坏非常重要。解决电动机温升问题有许多方法,例如:减少定子线圈匝数,增大导体面积，增长铁心,降低热负荷;或更改风路,修改风扇,让介质带走更多的热量,这种方法因要改变定子部分或机座结构形式,比较困难10。4.1 三相异步电动机发热过高的原

20、因1. 电动机过负荷，定子电流过大2. 线负荷过大3. 电流密度过大4. 损耗大定子绕组缺相运行5. 电源电压过高或过低6. 电动机通风道堵塞效率是电动机的一个重要性能指标，它的高低决定于运行时电机所产生的损耗，损耗越低，效率越高，发热越低。损耗的大小与电磁负荷有很大关系。为了降低损耗，就得选较低电磁负荷和电流密度，但这样会增加电动机的尺寸和材料耗量。此外，损耗的大小还与材料的性能，绕组的形式，电动机的构造有关系。4.2 改进法：减低损耗，降低线负荷，和电流密度，提高效率。改善电源4.2.1措施1.加大导线截面积效果，降低定子铝损耗，使槽满率加大，起动电流增高，降低电流密度。2.减少每相的串联

21、导体数效果，降低线负荷，增加起动电流。万案一万案一万案二槽满率0.7930.79740.79805起动电流36.9666.783定子铝（铜）损耗566.5232.5244281.002线负荷778.47215.087254.21定子电流密度5.333.8294.577线径0.92.061.83每槽导体数482024效率0.850.8730.881图4.2.13.选用适合的绕组型式，如双层绕组，星三角接混合接法、.1?>万案一万案一绕组型式双层叠式双层叠式连接方法三角接法星形(Y)接法,丿；£-方案二双层叠式星形(Y)接法附录A定，转子槽形图槽附录B三相异步电动机计算单型号:Y1

22、32S-45.5KW设计者:容浩然设计时间:2005-5-30no:1定子槽数:36转子槽数32|相数:3电机极数:4定子外径:19.00cm定子内径13.60cm|额定电压:380.00v额定频率:50.00hz转子外径:13.52cm转子内径4.80cm|额定功率:5.50kw新方案材料成本:298.74(元)铁心长度:11.50cm单边气隙长度:0.40mm|定子绕组连接形式:旧方案材料成本:297.82(元)定子槽形:(1圆底槽)|定子绕组形式:(5双层绕组(q=3)bs03.5|bs1:6.7|Rs:4.40|类型:|NS1|NDS|NS2hs00.8|hss:14.5|Zs:30.

23、00|_|_|_|每槽导体数:|48|转子槽形:(1平底平行齿槽)|N-d1:|1-0.90|N-d2:|1-0.90|br01.0|br1:5.5|br2:5.5|kf%:|79.30|br35.5|wr4:3.0|hr0:0.5|j1:|4.844|hr321.7|hrr:23.0|zr:30.0|_|_|_|绕组跨距Y1:1-1并联支路数:1Sb:96.5mxmJb:2.966|Ty:10.53cmal:1.50cmSr:260.0mxmJr:2.802|Lz:26.72cmfd:3.77cmGal1.43(1.38)bsk/t1:1.00|A1:258.02a/cm热负荷:4149Dk

24、r0.00mmbsk:11.9mm|R1:2.4312ohmGcu:5.68(5.68)硅钢片材料:50DR510|定子槽绝缘厚:0.27定子槽楔厚:2.0硅钢重:37.6(37.6)叠压系数:0.92|kdpl:0.9598Zph:564.0Wt10.557cmhc1:1.730cm|Wt2:0.625cmhc2:2.010cm电磁计算|_运行结果(d/s)ken0.9159|ktn:1.3191|I1(A):|11.285keo0.9655|Imo:0.6271|I2(A):|5.638kc:1.3483|Im(A):|4.195|Pcu(w)|309.617|b(kgs)|l(cm)|a

25、t/cm|at|Pal(w)|200.531_|_|_|Pfe(w)|136.986g:|6.771|0.054|292.14|Pad(w)|110.000St:|15.290|1.597|23.574|37.64|Pmc(w)|70.000Sc:|14.131|7.510|13.253|47.60|Psm(w)|827.13Rt:|15.336|2.300|24.169|55.59|sn(%)|3.369Rt:|0.000|0.000|0.000|0.00|Eff(%)|86.93/86.93Rc:|13.193|2.674|9.480|9.95|Fac:|0.8518/0.9520Fm:|

26、442.92|Tm/Tn:|2.686/2.690_|_|_|Tst/Tn|2.279/2.230Ikw(A):4.825|Zkw(ohm):7876|_Ist/I1|6.309/6.250额定参数|启动参数:cx=0.04249|Ed1:|Xs1:0.01300.444|Ed2:0.0130|Xs2:0.8101|ha:1.5512|Bst:0.446|r/R:|Kz:1.30850.4494ku1:1.000|Kl1:1.000|xd1:0.642|xd2:0.5910|cs1:4.608|cs2:6.758su1:0.410|sl1:0.826|xe1:0.532|xe2:0.1749|

27、stu2:0.064|stl2:1.488su2:0.500|sl2:1.675|xm:1.992|xsk:0.2363|xst1:0.380|xst2:0.578es1:1.236|es2:2.175|rb:0.0188|rr:0.0079|stu1:0.231|zst:0.117三相异步电动机改进计算单4型号:Y132Sm-45.5KW设计者:容浩然设计时间:2005-5-30no:1定子槽数:36转子槽数:32|相数:3电机极数:4定子外径:19.00cm定子内径:13.60cm|额定电压:340.00v额定频率:50.00hz转子外径:13.52cm转子内径:4.80cm|额定功率:5

28、.50kw新方案材料成本:315.52(元)铁心长度:14.8cm单边气隙长度:0.40mm|定子绕组连接形式:y|旧方案材料成本:297.82(元)定子槽形:(1圆底槽)|定子绕|组形式:(5双层绕组(q=3)bs03.5|bs1:6.7|Rs:440|类型:|NS1|NDS|NS2hs00.8|hss:14.5|Zs:3000|_|_|每槽导体数:|20|转子槽形:(1平底平行齿槽)|N-d1:|1-2.06|N-d2:|0-0.00|br01.0|br1:5.5|br2:5.5|kf%:|79.9|br35.5|wr4:3.0|hr0:.5|j1:|4.844|hr321.7|hrr:2

29、3.0|zr:30.0|_|_|绕组跨距Y1:1-1并联支路数:1Sb:96.5mxmJb:2.966|Ty:10.53cmal:1.50cmSr:260.0mxmJr:2.802|Lz:26.72cmfd:3.77cmGal1.43(1.38)bsk/t1:1.00|A1:258.02a/cm热负荷:830.5Dkr0.00mmbsk:11.9mm|R1:2.4312ohm|Gcu:5.68(5.68)硅钢片材料:50DR510|定子槽绝缘厚:0.27|定子槽楔厚:2.0硅钢重:37.6(37.6)叠压系数:0.92|kdpl:0.9598|Zph:564.0Wt10.557cmhc1:1.

30、730cm|Wt2:0.625cm|hc2:2.010cm电磁计算|运|行结果(d/s)ken:0.9159|ktn:1.3191|I1(A):|11.285keo:0.9655|Imo:0.6271|I2(A):|5.638kc:1.3483|Im(A):|4.195|_|Pcu(w)|309.617|b(kgs)|l(cm)|at/cm|at|Pal(w)|200.531_|_|_|Pfe(w)|136.986g:|6.771|0.054|292.14|Pad(w)|110.000St:|15.290|1.597|23.574|37.64|Pmc(w)|70.000Sc:|14.131|7

31、.510|13.253|47.60|Psm(w)|827.13Rt:|15.336|2.300|24.169|55.59|sn(%)|3.369Rt:|0.000|0.000|0.000|0.00|Eff(%)|87.30/86.93Rc:|13.193|2.674|9.480|9.95|Fac:|0.8310/0.9520Fm:|442.92|Tm/Tn:|4.014/2.690_|_|_|Tst/Tn|2.003/2.230Ikw(A):4.825|_Zkw(ohm):7876|Ist/I1|6.9660/6.250额定参数|_|启动参数:cx=0.04249|Ed1:0.0130|Ed2

32、:0.0130|ha:1.5512|r/R:1.3085_|Xs1:0.444|Xs2:0.8101|Bst:0.446|Kz:0.4494ku1:1.000|Kl1:1.000|xd1:0.642|xd2:0.5910|cs:4.608|cs2:6.758su1:0.410|sl1:0.826|xe1:0.532|xe2:0.1749|stu2:0.064|stl2:1.488su2:0.500|sl2:1.675|xm:1.992|xsk:0.2363|xst:0.380|xst2:0.578es1:1.236|es2:|2.175|rb|:0.0188|rr:0.0079_|stu_|:

33、0.231|zst:0.117|型号:Y132Sn-45.5KW设计者:容浩然设计时间:2005-5-30no:1定子槽数:36转子槽数:32|相数:3电机极数:4定子外径:19.00cm定子内径:13.60cm|额定电压:340.00v额定频率:50.00hz转子外径:13.52cm转子内径:4.80cm|额定功率:5.50kw新方案材料成本:298.74(元)铁心长度:10.4cm单边气隙长度:0.40mm定子绕组连接形式:y|旧方案材料成本:297.82(元)定子槽形:(1圆底槽)|定子绕|组形式:(5双层绕组(q=3)bs03.5|bs1:6.7|Rs:440I类型：INS1INDSINS2hs00.8|hss:14.5|Zs:3000|III|_|每槽导体数:I24II转子槽形:(1平底平行齿槽)N-d1:I1-1.87II|N-d2:I0-0.00IIbr01.0|br1:5.5|br2:5.5|kf%:I79.9IIbr35.5|wr4:3.0|hr0:.5|j1:I4.844IIhr321.7|hrr:23.0|zr:30.0|III|_I绕组跨距Y1:1-1并联支路数:1Sb:96.5mxmJb:2.966|Ty:10.53cmal:1.50cmSr:260.0mxmJr:2.802ILz:26.72