电机方向课程设计

题目(算例)：Y132M-4额定数据与性能指标1、电机型号Y132M-42、额定功率PN=7.5千瓦3、额定频率fN=50赫4、额定电压及接法UN=380伏Δ5、极数2P=46、绝缘等级B7、力能指标：效率0.8530.878、功率因数cos.84o0.859、最大转矩倍数2.2MT10、起动性能：起动电流倍数7stI,起动转矩倍数2.2stT算例（一）额定数据和主要尺寸：1.额定功率：KWPn5.72.额定电压：VUUNN380（接）3.功电流：AAmUPINNkW58.63803105.734.效率：87.0'5.功率因素：85.0cos'6.极对数：2p7.定转子槽数每相每极槽数取整数31q则363232211mpqZ322Z并采用斜肩平底槽8.定转子每极槽数9436211pZZp8432222pZZp9．确定电机电机主要尺寸主要尺寸来确定lDi和efl927.0931.02013.05.7ln0108.0931.0013.0ln0108.0'pPKNE计算功率KWPKPNE4.985.087.0105.7927.0cos3''''初选68.0'pa，095.1'NmK，96.0'1dpK可取mAA25600'，取TB67.0'，假定min1440'rn。33'''''''00324.01440104.967.025600196.0095.168.01.611.61mnpBAKKaVdpNmp取5.1则mmVpDil141.000324.05.14233'按定子内外径比求出定子冲片外径mDDDDii2203.064.0141.0/11'1取mD22.01mDDDDii141.064.0/22.0)(111铁心的有效长度：mDVlief163.0141.000324.0221取铁心长mli160.010．气隙的确定mmlDii3331104.010)160.0141.074.0(3.010)74.0(3.0于是铁心有效长度mmllief161.0)0004.02160.0(2转子外径mmDDi140.0)0004.02141.0(212转子内径先按转轴直径：mDi048.0211．极距mpDi111.04141.02112．定子齿距mZDti0123.036141.0111转子齿距mZDt0161.032140.022213．定子绕组采用单层绕组，交叉式，节距1-9，2-10，11-1214．为了削弱齿谐波磁场的影响，转子采用斜槽，一般斜一个定子齿距1t，于是转子斜槽宽mbsk0130.015.设计定子绕组并联支路11a.每槽导体数321sN16.每相串联匝数38413363211111amZNNs每相串联匝数1922384211NN17.绕组线规设计初选定子电密2'10.4mmAJ，计算导线并绕根数和每根导线截面积的乘积。2'11'1'1122.20.4190.8mmJaIANci其中定子电流初步估计值AIIKW90.885.087.058.6cos'''1选用截面积相近的铜线：高强度漆包线，并绕根数21iN，线径mmd18.11，绝缘后直径mmd25.1，截面积2'10936.1mmAc，2'111872.2mmANci18.设计定子槽形mbZhhDbsii3331111011min1109.5107.636]10)924.08.0(2140.0[)](2[m106.17104.4236]1014.5)(0.82π[0.1412rZ)]πh2(h[Db333112201i1i1min取mbi311004.619.槽在面积26221'211109.13824.4)5.05.14(27.64.422)(22mrhhbrAsss按槽绝缘采用DMDM复合绝缘，mmi3.0，槽楔为mmh5.0，复合板，槽绝缘占面积。2612108.12)0044.00145.02(0003.0)2(mrhAiii槽满率%4.791.12625.13222211efsifAdNNS20.绕组系数11pK9598.0220sin32203sin2sin2sin1aqqaKd其中2036360221Zpa9598.09598.01111pddpKKK每相有效串联导体数3689598.038411dpKN21.设计转子槽形与转子绕组预计转子导条电流：AAZkNIkIdp64.24536368390.890.03211'11'2其中90.01k由资料查出。初步取转子导条电密2'5.3mmAJb，于是导条的截面积：22''2'18.705.364.245mmmmJIABBmmbZhhDbsssi33321202212max21089.7105.532]10)5.030.1(214.0[)](2[mmbZhhhDbssssi3332222202212min21013.610332]10)5.023(214.0[)](2[mmbbbbbiiiii3333min2max2max2221072.6)1013.61089.7(311013.6)(3131导条截面积（转子槽面积）2622222121212021045.96)30.123()2553(30.1)2551()2()2(mmhbbhbbAsssssB估计端环电流AApZIIR5.62543264.24522'2'端环所需面积22'''9.2971.25.625mmmmJIARRR其中端环电密2''1.26.0mmAJJBR得端环所需面积为2610250mAR（二）磁路计算22.满载电势初设940.0)1(''LEkVVUENL2.357380940.0)1('123.每极磁通初设25.1'sk由图3-5查得090.1NmkWbWbfNkkEdpNm00889.0192509598.0090.142.3574111为计算磁路各部分磁密，需先计算磁路中各部分的磁导截面24.每极下齿部截面积2331111026.891004.6160.095.0mZblkApiiFei2332221017.881072.6160.095.0mZblkApiiFei25.定子轭部高度mmrhDDhssij3331221'1103.191034.410)4.45.148.0(2141.022.032转子轭部高度mhDDhsij33222'2105.2210)5.023(2048.0140.02轭部导磁截面积2323'1110934.2103.19160.095.0mmhlkAjiFej2323'221042.3105.22160.095.0mmhlkAjiFej26.一极下空气隙截面积2201809.0163.0111.0mmlAef27.波幅系数47.168.011'pavsaBBF28.气隙磁密计算TTAFBs722.001809.000889.047.129.定子齿部磁密：TTAFBisi561.11026.800889.047.131130.转子齿部磁密TTAFBisi578.11017.800889.047.132231.从D23磁化曲线找出对应上述磁密的磁场强度：cmAHi6.321cmAHi8.37232.有效气隙长度mmkef331041.0104.0025.1其中气隙系数为023.1)105.3()105.375.0104.04.4(0123.0)105.375.0104.04.4(0123.0)75.04.4()75.04.4(2333332010110111bbtbtk0025.1)101()10175.0104.04.4(0161.0)10175.0104.04.4(0161.0)75.04.4()75.04.4(2333332020220222bbtbtk025.10025.1023.111kkk33.齿部磁路计算长度mmrhhLi321211111097.154.4315.1431)(mrhhLi32122122102331)(34.轭部磁路计算长度3333'11'11087.788)103.1922.0(212)(mmphDLjj3333'11'11087.788)103.1922.0(212)(mmphDLjj35.气隙磁压降AABkF57.235104.0104.0722.0025.163036.齿部磁压降AALHFiii06.521097.15106.3232111AALHFiii94.86108.3710233222237.饱和系数258.157.23594.8606.5257.23521FFFFkiis误差=%1%63.0258.125.1258.1，合格38.定子轭部磁密TTABjj450.110934.2200889.02131139.转子轭部磁密TTABjj242.11042.3200889.02132240.从D23磁化曲线找出对应上述磁密的磁场强度：cmAHj5.151cmAHj8.73241.轭部磁压降：其中轭部磁位降校正系数由资料的附图查出174.0111.0103.193'1jh,TBj450.11于是410.01jCALHCFjjjj08.501081.78105.15410.032'1111203.0111.0105.223'1jh，TBj242.12于是410.02jCALHCFjjjj991.81069.271038.7410.032'222242.每极磁势AAFFFFFFjjii85.374)99.808.5051.5486.33741.22(212143.满载磁化电流：AAkNmpFIdpm014.39598.019239.085.37449.0211144.磁化电流标么值458.058.6014.3*kWmmIII45.励磁电抗46.1461041.02258.1111.0167.0)9598.0192(3104.0504)(432621110efefsdpmslpkkNmfX536.238058.646.146*NkWmsmsUIXX（三）参数计算46.线圈平均半匝长单层线圈ycBcKll=0.195+1.2×0.09929=0.314m12dlltB=0.165+2×0.015=0.195mτy=prhhhDi2/])(2[21211101=π[0.141+2(