1直流电机设计程序3.1主要指标1.额定电压2.额定功率3.额定转速4.额定效率3.2主要尺寸的确定5.结构型式的选择6.永磁材料的选择选用烧结钕铁硼7.极弧系数8.电负荷9.长径比10.计算功率11.电枢直径12.极数p=413.极距14.电枢长度cmDLaa5.10157.0WPpNNN76678.0378.021321'cmDcmnBApDaNia151.157.06006.0906.0766101.6'''101.63333取cmpD89.5421514.32215.气隙δ=0.06cm16.电枢计算长度3.3绕组设计17.绕组形式选用单叠绕组18.绕组并联支路对数a=p=419.槽数20.槽距21.预计气隙磁通22.电枢电动势23.预计导体总数24.每槽导体数25.每槽元件匝数式中每槽元件数u=226.实际每槽导体数cmLLaef62.1006.025.102451533aDQcmQDta05.1451514.32wbBLefi3441025.2106.062.1089.56.010''VUENNa48.20378.0213219106001025.2448.20460'60'3NanpaEN2.2045910''QNNs505.5222.202''ssWuNW取205222ssuWN327.实际导体总数28.额定电枢电流29.实际电负荷30.预计电流密度j’2=5.6A/mm231.预计导线截面积32.导线规格导线裸线线径dI=1.04cm导线绝缘后线径d=1.17cm33.实际导线截面积式中并绕根数Nt=134.实际电枢电流密度35.实际热负荷36.绕组平均半匝长度其中端部系数Ke=0.837.电枢绕组电阻Ra20(ρ20=0.1785×10-3Ω.mm2/cm)9002045sQNN22835.06.5424.37'2'mmajIANCuacmAaDNIAaN/3.8915414.324.37900222414.3248491.004.11mmdNAitCua22/51.58491.0424.372mmAaAIjCuaN).,/(49251.53.89222mmcmAAjcmDKLLaeaav5.22158.05.1024aANLRCuaavaAUPINNNN4.3778.0247004Ra75(ρ20=0.217×10-3Ω.mm2/cm)3.4转子冲片的设计38.槽形的选择选用梨形槽39.槽口宽b02=0.20cm40.槽口高h02=0.10cm41.齿宽式中KFe——电枢冲片叠压系数KFe=0.93这里取Bt2=1.67T42.轭高43.槽高其中Di2——电枢内径Di2=10cm44.槽上部半径45.槽下部半径r22=0.15cm46.槽上下圆心距47.槽净面积cmLBKLtBbateFeft41.05.1067.193.062.1005.16.0'222cmLBKhajFej96.0105.102.193.021025.2102'43422cmhDDhjiat54.1)85.029.1015(5.0)2(22212cmtDhtbtDrata29.0)05.115(21.005.12)41.005.1(15)(22)(20222221cmrrhhht0.115.029.01.020.1222102222067.048491.045.22900101785.02320aR081.048491.045.2290010217.02375aR5式中ci为槽绝缘厚度,取ci=0.025cm48.槽满率3.5永磁体及机壳尺寸的确定49.永磁体厚度hM=0.3cm50.永磁体的轴向长度LM=La=10.5cm51.永磁体的内径52.永磁体的外径53.机壳长度Lj=(2~3)La=(2~3)10.5=(21~31.5)取Lj=28cm54.机壳厚度其中Bj’----------初选机座轭磁密Bj’=1.6Tσ-------漏磁系数σ=1.255.机壳外径3.6磁路计算56.气隙系数222222221222122222221557.0]0.12)15.029.0(14.3[025.0)15.029.0(0.1)15.029.0(214.3]2)([)()(2cmhrrcrrhrrAis%2.49557.017.120122sstfAdNNscmDDaMi12.1506.02152cmhDDMMiMo72.153.0212.152cmBLBLhjjefij3.06.12826.062.1089.56.02.1'2'cmhDDjMoj32.163.0272.152608.12.006.052.005.105.1520220222bbttK57.气隙磁密58.每对极气隙磁位差59.电枢齿磁密60.电枢齿磁场强度查磁化曲线可得Ht2=76.6A/cm61.电枢齿磁位差62.电枢轭磁密63.电枢轭磁场强度查磁化曲线可得Hj2=1.79A64.电枢轭磁位差式中Lj2-----电枢轭部磁路平均计算长度65.定子轭磁密66.定子轭磁场强度查磁化曲线可得Hj1=55.9A/cm67.定子轭磁位TLBefi60.062.1089.56.01025.210'44TKLbBLtBFeateft67.193.05.1041.06.062.1005.1222ABKF08.622106.006.008.16.1106.144AHhFttt84.1826.7620.122222TLhKBajFej52.05.1021.293.02101025.2210'432142AHLFjjj25.879.161.4222cmphDLjij61.442)85.09.10(14.32)(222TLhBjjj61.1283.02101025.22.1210'4341AHLFjjj61.3519.5529.61117式中Lj1----定子轭部磁路平均计算长度68.外磁路总磁位差69.空载特性计算表Фδ(Wb)0.002000.002100.002150.002200.002300.00235Bδ=266.4Фδ(T)0.53280.559440.572760.58610.6130.626Fδ=1036.8Bδ(A)552.41580.03593.84607.65635.31649.04Bt2=2.785Bδ(T)1.481.561.601.631.711.74Ht2(A/cm)25.041.352.962.192105Ft2=2.4Ht2(A)6099.12126.96149.04220.8252Bj2=231.7Фδ(T)0.4630.4870.4980.510.530.54Hj2(A/...
