三相感應電機設計-題目+實例

1、 北京交通大學電機設計任務書三相籠型感應電動機電磁設計及其運行性能的有限元電磁場仿真計算專業(yè)班級：班學生姓名：學號：指導老師：任務下達日期2014年4月21日設計完成日期2014年6月13日一、課程設計的性質(zhì)與目的電機課程設計的是電氣工程及其自動化專業(yè)電機電器及其控制方向（本科）、電機制造（專科）專業(yè)的一個重要實踐性教學環(huán)節(jié)，通過電機設計的學習及課程設計的訓練，為今后從事電機設計工作、維護的人才打下良好的基礎。電機設計課程設計的目的：一是讓學生在學完該課程后，對電機設計工作過程有一個全面的、系統(tǒng)的了解。另一個是在設計過程培養(yǎng)學生分析問題、解決問題的能力，培養(yǎng)學生查閱表格、資料的能力，訓練學生的

2、繪圖和閱圖能力，為今后從事電機設計技術工作打下堅實的基礎。二、設計內(nèi)容1在查閱有關資料的基礎上，確定電機主要尺寸、槽配合，定、轉(zhuǎn)子槽形及槽形尺寸。2確定定、轉(zhuǎn)子繞組方案。3完成電機電磁設計計算方案。4畫出定、轉(zhuǎn)子沖片圖。5完成說明書（16開，計算機打印或課程設計紙手寫，計算機打印需提供紙質(zhì)計算原稿）對已經(jīng)完成的電磁設計方案建立有限元模型，利用ANSOFT軟件進行運行性能的仿真計算，給出性能分析圖表等。三、課程設計的基本要求1求每位同學獨立完成一種型號規(guī)格電機的全部電磁方案計算過程，并根據(jù)所算結(jié)果繪出定、轉(zhuǎn)子沖片圖。2要求計算準確，繪出圖形正確、整潔。3要求學生在設計過程中能正確查閱有關資料、圖

3、表及公式。四、題目（算例）：Y132M-4額定數(shù)據(jù)與性能指標1、電機型號Y132M-42、額定功率Pn=7.5千瓦3、額定頻率fN=50赫4、額定電壓及接法Un=380伏A5、極數(shù)2P=46、絕緣等級B7、力能指標：效率=0.8530.878、功率因數(shù)cos,=o.840.859、最大轉(zhuǎn)矩倍數(shù)T二2.2M10、起動性能：起動電流倍數(shù)/=7,起動轉(zhuǎn)矩倍數(shù)T=2.2stst五、設計題目題目1：Y132M1-6額定數(shù)據(jù)與性能指標1、電機型號Y132M-62、額定功率Pn=4千瓦3、額定頻率fN=50赫4、額定電壓及接法Un=380伏1-A5、極數(shù)2P=66、絕緣等級B7、力能指標：效率,=0.848

4、、功率因數(shù)cos申=o.779、最大轉(zhuǎn)矩倍數(shù)T=2.0M起動性能：起動電流倍數(shù)I=6.5,起動轉(zhuǎn)矩倍數(shù)T=2.0stst主要尺寸D=0.21mD=0.148ml=0.14m=0.35mmD=d=0.048m；乙=361i1i2Z2定子槽形采用斜肩園底梨形槽：b=3.5mmh=0.8mmb=6.8mm,=30。r=4.4mmh+h=11.5mm0101s11s1s11s12轉(zhuǎn)子采用斜肩平底槽：b=1mmh=1mmb=6.5mmb=2.6mm=30。h+h=20mm0202s21s222s21s22題目2：Y132M2-6額定數(shù)據(jù)與性能指標1、電機型號Y132M2-62、額定功率PN=5.5千瓦3

5、、額定頻率fN=50赫4、額定電壓及接法Un=380伏1-A5、極數(shù)2P=66、絕緣等級B7、力能指標：效率,=0.8538、功率因數(shù)cos申=o.789、最大轉(zhuǎn)矩倍數(shù)T=2.0M起動性能：起動電流倍數(shù)I=6.5,起動轉(zhuǎn)矩倍數(shù)T=2.0stst主要尺寸D0.21mD0.148ml0.18m1i160.35mmD=d=0.048m；i21Z36332定子槽形采用斜肩園底梨形槽：b3.5mmh0.8mm0101b6.8mms1,30or4.4mm1s1h+h11.5mm；s11s12轉(zhuǎn)子采用斜肩平底槽：b1mmh1mmb0202s216.5mmbs222.6mm,3002-+h20mms21s22

6、題目3：Y132M-4額定數(shù)據(jù)與性能指標1、電機型號Y132M-42、額定功率Pn=7.5千瓦3、額定頻率fN=50赫4、額定電壓及接法Un=380伏】-5、極數(shù)2P=46、絕緣等級B7、力能指標：效率=0.878、功率因數(shù)cos二o.859、最大轉(zhuǎn)矩倍數(shù)T*2.2M起動性能：起動電流倍數(shù)I*st7,起動轉(zhuǎn)矩倍數(shù)T*2.2st主要尺寸D0.21mD0.136ml0.16m1i160.4mmDd0.048m；i21Z36322定子槽形采用斜肩園底梨形槽：b3.5mmh0.5mmb6.7mm0101s1,30or1s14.4mmh+hs11s1214.5mm轉(zhuǎn)子采用斜肩平底槽：b1mmh1mm02

7、02b5.5mmb=3mm,=300s21s222h+h25mms21s22題目4：Y132S-4額定數(shù)據(jù)與性能指標1、電機型號Y132S-42、額定功率Pn=5.5千瓦3、額定頻率fN=50赫4、額定電壓及接法Un=380伏】-5、極數(shù)2P=46、絕緣等級B7、力能指標：效率=0.8538、功率因數(shù)cos二o.849、最大轉(zhuǎn)矩倍數(shù)T*2.2M起動性能：起動電流倍數(shù)I*7,起動轉(zhuǎn)矩倍數(shù)T*2.2ststDd0.048m；i21Z36322主要尺寸D0.21mD0.136ml=0.115m6=0.4mm1i1定子槽形采用斜肩園底梨形槽：b3.5mmh=0.8mmb=6.7mm,=30。r=4.4

8、mmh+h=14.5mm0101s11s1s11s12轉(zhuǎn)子采用斜肩平底槽：b1mmh=0.5mmb=5.5mmb=3mm,=30。h+h=25mm0202s21s222s21s22題目5：Y160M1-8額定數(shù)據(jù)與性能指標1、電機型號Y160M1-82、額定功率PN=4千瓦3、額定頻率fN=50赫4、額定電壓及接法Un=380伏1-A5、極數(shù)2P=86、絕緣等級B7、力能指標：效率=0.848、功率因數(shù)cos二o.729、最大轉(zhuǎn)矩倍數(shù)T*2.0M起動性能：起動電流倍數(shù)I*6.0,起動轉(zhuǎn)矩倍數(shù)T*2.0stst主要尺寸D0.26mD=0.18ml=0.11m6=0.4mmD=d=0.06m;彳？

9、=48AA1i1i2Z442定子槽形采用斜肩園底梨形槽：b3.2mmh=0.8mmb=5.3mm,=30。r=3.85mmh+h=18.6mm0101s11s1s11s12轉(zhuǎn)子采用斜肩平底槽：b1mmh=0.5mmb=5.2mmb=2.2mm,=300h+h=19mm0202s21s222s21s22題目6：Y160M2-8額定數(shù)據(jù)與性能指標1、電機型號Y160M2-82、額定功率PN=5.5千瓦3、額定頻率fN=50赫4、額定電壓及接法Un=380伏】-5、極數(shù)2P=86、絕緣等級B7、力能指標：效率=0.858、功率因數(shù)cos二o.749、最大轉(zhuǎn)矩倍數(shù)T*2.0M 起動性能：起動電流倍數(shù)I

10、=6.0,起動轉(zhuǎn)矩倍數(shù)T=2.0stst主要尺寸D=0.26mD=0.18ml=0.145m1i1,=0.4mmD=d=0.06m；彳z=48442i2定子槽形采用斜肩園底梨形槽：b=3.2mmh=0.8mmb=5.3mm0101s1a=30or1s1=3.85mmhh=18.6mms11s12轉(zhuǎn)子采用斜肩平底槽：b=1mmh=0.5mm0202b=5.2mmbs21s22=2.2mma=3Ooh2)h=19mms21s22 # #題目7：Y160M-6額定數(shù)據(jù)與性能指標 # #1、電機型號Y160M-62、3、5、額定頻率fN=50赫極數(shù)2P=64、6、7、力能指標：效率=0.869、最大轉(zhuǎn)

11、矩倍數(shù)T=2.0M額定功率Pn=7.5千瓦額定電壓及接法Un=380伏】-絕緣等級B8、功率因數(shù)cos申=o.78 #起動性能：起動電流倍數(shù)Ist=6.5,起動轉(zhuǎn)矩倍數(shù)T=2.0st # #主要尺寸D=0.26mD=0.18ml=0.145m,=0.4mmD=d=0.06m；1i1i2Z1Z2=3633 #定子槽形采用斜肩園底梨形槽：b=3.8mmh=0.8mmb=7.4mma=30。r0101s1s1=5.1mmhhs11s12=16mm # #轉(zhuǎn)子采用斜肩園底槽：b=1mmh=0.5mm0202b=4.2mmr=2.1mms2s2a=3Oo2hh=25mms21s22題目8：Y160L-6

12、額定數(shù)據(jù)與性能指標1、電機型號Y160L-63、額定頻率fN=50赫5、極數(shù)2P=62、額定功率PN=11千瓦4、額定電壓及接法Un=380伏】-6、絕緣等級B7、力能指標：效率=0.878、功率因數(shù)cos申=o.78 9、最大轉(zhuǎn)矩倍數(shù)T二2.0M起動性能：起動電流倍數(shù)I*=6.5,起動轉(zhuǎn)矩倍數(shù)T=2.0stst主要尺寸D=0.26mD=0.18ml二0.195m，二0.4mmD=d=0.06m；1i1i2Z1Z2=3633定子槽形采用斜肩園底梨形槽：b=3.8mmh=0.8mm0101b=7.4mma=30。r=5.1mms11s1hh=16mms11s12轉(zhuǎn)子采用斜肩園底槽：b=1mmh=

13、0.5mm0202b=4.2mms2r=2.1mma=30。s22hh=25mms21s22說明書格式1課程設計封面；2課程設計任務書；3三相感應電動機電磁設計特點及設計思想；4三相感應電動機定、轉(zhuǎn)子繞組方案；5電磁設計設計單；6定、轉(zhuǎn)子沖片圖；7總結(jié)與體會；參考文獻電機設計,陳世坤,第二版中小型電機設計手冊，上海電器科學研究所中小型電機設計手冊編寫組，機械工業(yè)出版社.1994年小型三相異步電動機技術手冊，季杏法主編，機械工業(yè)出版社1987電機設計，李隆年主編，清華大學出版社電機學，湯蘊璆主編，機械工業(yè)出版社 一）額定數(shù)據(jù)和主要尺寸：1.額定功率：P5.5KWn2.額定電壓：UU380V（,接

14、）NN3.功電流：IkWP5.5x103NA4.82AmU3x380N4.效率：0.8535.功率因素：cos二0.786.極對數(shù)：p37.定轉(zhuǎn)子槽數(shù)每相每極槽數(shù)取整數(shù)q3貝UZ2mpq2x3x3x3=361133并采用斜肩平底槽8.定轉(zhuǎn)子每極槽數(shù)Z361一62p6Z332一52p69確定電機電機主要尺寸主要尺寸來確定d和仃K0.0108lnP-0.013d+0.931EN0.0108ln5.5-0.013x2+0.9310.923計算功率 PPKNE叮COS,0.923x55%I030.853x0.78763KW初選a0.68,K1.095,pNmKdp1O96可取A25600Am，取B0.

15、67T假定n1440rminTOC o 1-5 h z6.11p-aKKABnpNmdp16.119.4x103 HYPERLINK l bookmark1070.68x1.095x0.9625600 x0.6714400.00324m3取九=1.5則D32pV36x0.00324n=0.148mil九兀1.5x兀0.1410.640.2203m按定子內(nèi)外徑比求出定子沖片外徑DnD/Di1取D0.21m1DDx(DD)0.21/0.6=0.148ni11i1鐵心的有效長度：lL0003240.148nefD20.14&i1取鐵心長l0.150mi10氣隙的確定0.3(0.47Dl)x103i1

16、i0.3x(0.470.141x0.160 x10-3mq0.35x10-3m于是鐵心有效長度l=l,25(0.150+2X0.000350.15mefi轉(zhuǎn)子外徑DD25(0.1482x0.00035m=0.147m2i1轉(zhuǎn)子內(nèi)徑先按轉(zhuǎn)軸直徑：D0.048mi211.極距t=巴1X1480.079n2p6Dx0.148定子齒距t0.0129n1Dx0.147轉(zhuǎn)子齒距t20.0140n2Z332定子繞組采用單層繞組，交叉式，節(jié)距1-9，2-10，11-12為了削弱齒諧波磁場的影響，轉(zhuǎn)子采用斜槽，一般斜一個定子齒距t，于是轉(zhuǎn)子斜1槽寬b0.0090nsk設計定子繞組并聯(lián)支路a1.每槽導體數(shù)N321

17、s1每相串聯(lián)匝數(shù)NNs1_132X363841ma3x111N384每相串聯(lián)匝數(shù)N384192122繞組線規(guī)設計初選定子電密J4.0Amm2,計算導線并繞根數(shù)和每根導線截面積的乘積。112.52NA厶12.523.13mm211c1aJ1x4.0II其中定子電流初步估計值ILw8331252A1qcosp0.853x0.78選用截面積相近的銅線：高強度漆包線，并繞根數(shù)N2，線徑d1.18mm，絕緣后i11直徑d1.25mm，截面積A=1.0936mm2，NA=2.1872mm2c1i1c1 18.設計定子槽形兀D+2(h+h)i101s11bi1min0.148+2X(0.8+0.924x10

18、-348一6.8x10-33.1x10-3mi1minD+2(h+h)i1ji一2rji0.1482X(08+14.5X10-348一2x4.4x10-3，2.89x10-3m取b，3.00 x10-3mi119.槽在面積2r8br2A，1st(h一h)+4s2s22，2x4.4+68x(145-0.5)+x4.42按槽絕緣采用DMDM復合絕緣,22，382x10-6m-2，0.3mm，槽楔為h，0.5mm，復合板，槽絕緣占面積。iA=(2h+r)ii12i，0.0003x(2x0.0145+x0.0044)，12.8x10-6m2槽滿率NNd22x32x1.252”“S，iisi，79.4%

19、fA126.1ef20.繞組系數(shù)K，1p1.qa.3x30sinsinK，L,2,1.28795.a。.30qsin3sin一22 其中a2,3x36030pZ361KKK1x1.2879=1.2879dp1d1p1每相有效串聯(lián)導體數(shù)NKN384x1.2879=4951dpi1設計轉(zhuǎn)子槽形與轉(zhuǎn)子繞組預計轉(zhuǎn)子導條電流：3Nk3x495IkImLjpL0.90 x8.90 xA36045A211Z332其中k0.90由資料查出。1初步取轉(zhuǎn)子導條電密J3.5Amm2，I360.45于是導條的截面積：A2mm210299mm2TOC o 1-5 h zbJ3.5BD2(h+h川b2s21s02bi2m

20、axZs2120.142x(1.30+0.5)x10-3,“5.5x103m327.89x10-3m # #bi2minD2(h+h+h),C.Cl.AC.CCi-x2s21S02s22U HYPERLINK l bookmark64Zs222bi20.142x(23+0.5)x10-3,32一3x10-3mbb+(bb)i2_1i2max3i2maxi2min36.13x10-3+1(7.89x10-36.13x10-3)m 6.13x10-3m6.72x10-3m導條截面積（轉(zhuǎn)子槽面積）b+bb+bA(_02s12)h+(-12s22)hB2s122s22(55)x1.30+(55)x(2

21、31.30)m296.45x10-6m2估計端環(huán)電流Z32II-一245.64xA625.5AR22,p4,端環(huán)所需面積625.52.1mm2297.9mm2其中端環(huán)電密J0.6J2.1Amm2得端環(huán)所需面積為A=250 x10-6m2RBR（二）磁路計算滿載電勢初設k(1-)0.940ELE(1-冷u0.940 x380V=357.2V1LN每極磁通初設k1.25s由圖3-5查得k1.090NmE4kkfNNmdp11空Wb4x1.090 x0.9598x50 x1920.00889Wb為計算磁路各部分磁密，需先計算磁路中各部分的磁導截面每極下齒部截面積AklbZ0.95x0.160 x6.

22、04x10-3x9=8.26x10-3m2i1Feii1p1AklbZ0.95x0.160 x6.72x10-3x8=8.17x10-3m2i2Feii2p2定子軛部高度DDrh，1i2h+siTOC o 1-5 h zj12s230.220.1414.4，(0.8+14.5+4.4)x10-3+x10-3m23，19.3x10-3m轉(zhuǎn)子軛部高度D-D0.140-0.048h，2i2h，(23+0.5)x10-3=22.5x10-3mj22s22軛部導磁截面積A，klh，0.95x0.160 x19.3x10-3m2，2.934x10-3m2j1Feij1A，klh，0.95x0.160 x2

23、2.5x10-3m2，3.42x10-3m2j2Feij226.一極下空氣隙截面積A，l，0.111x0.163m2，0.01809m2ef27.波幅系數(shù)ava0.68，1.4728.氣隙磁密計算F1.47x0.00889s0.01809T，0.722T29.定子齒部磁密：F1.47x0.00889i18.26x10-3T，1.561Ti130.轉(zhuǎn)子齒部磁密F1.47x0.00889si28.17x10-3T，1.578Ti231.從D23磁化曲線找出對應上述磁密的磁場強度：H，32.6AcmH，37.8Acmi1i232.有效氣隙長度，k,1.025x0.4x10-3m，0.41x10-3m

24、ef其中氣隙系數(shù)為t(4.4+0.75b)ki01it(4.4+0.75b)b2101010.0123x(4.4x0.4x10-3+0.75x3.5x10，3)0.0123x(4.4x0.4x10,3+0.75x3.5x10,3)，(3.5x10,3)21.023t(4.4+0.75b)k=2022t(4.4+0.75b)-b220202_0.0161x(4.4x0.4x10，3+0.75xlx10，3)_0.0161x(4.4x0.4x10，3+0.75x1x10，3)-(1x10，3)21.0025kkk1.023x1.0025=1.02511齒部磁路計算長度L(h+h)+r14.5+x4

25、.4m=15.97x10，3mi111213213L(h+h)+r23x10-3mi21222321軛部磁路計算長度Lj1(0.2219.3x10，3)8m，378.87x10，3m，3Lj1(0.2219.3x10，3)8m，378.87x10，3m，3 # 35.氣隙磁壓降FkB01.025x0.722x0.4x10，3.A235.5/.A0.4x10，636.齒部磁壓降FHL32.6x102x15.97x10-3A52.06Ai1i1i1FHL23x102x37.8x10-3A86.94Ai2i2i237.飽和系數(shù)F+F+F235.57+52.06+86.94k飪毎1.258sF235.

26、57 誤差二12=63%】合格38.定子軛部磁密0.00889BT=1.450Tji2A2x2.934x10，3j139.轉(zhuǎn)子軛部磁密B-丄.00889T-1.242Tj22A2x3.42x10，3j240.從D23磁化曲線找出對應上述磁密的磁場強度：H15.5AcmH73.8Acmj1j241.軛部磁壓降：其中軛部磁位降校正系數(shù)由資料的附圖查出r晉1o174,B廠皿。T于是Cj1-0.410FCHL0.410 x15.5x102x78.81x10350.08Aj1j1j1j1卜0203，Bj2-142T于是C2-0410FCHL0.410 x7.38x102x27.69x1038.991Aj

27、2j2j2j242.每極磁勢FF+F+F+F+FCT8i1i2j1j2(22.741+33.86+54.51+50.08+8.99)A374.85A43.滿載磁化電流：2pFCT0.9mNk11dp14x374.850.9x3x192x0.9598A3.014A44.磁化電流標么值I*3.0146.580.458 #kW45.勵磁電抗 Xmsm(Nk)2t=4fi嚴l0kpefsef4,50,0.4,10-6,3,(192,0.9598)2,0.167,0.111,1.258,2,0.41,10-3=146.46X*二XkWmsmsUN146.46,6.58380二2.536三）參數(shù)計算46.

28、線圈平均半匝長單層線圈/二/+Kt=0.195+1.2x0.09929=0.314mcBcy/二/+2d=0.165+2x0.015=0.195mBt1t=兀D+2(h+h)+h+rP/2pyi10112121=n0.141+2(0.8+0.924)+(14.5-0.924)x10-3+4.4x10-3卩/2x2=99.29x10-3m節(jié)距比2/3P1,取P=0.8其中d1是線圈直線部分伸出鐵心的長度，取1030mm。kc是經(jīng)驗系數(shù)取1.247單層線圈端部平均長/二2d+Kt二2x0.015+1.2x0.0993=0.150mE1cy48漏抗系數(shù)C=4押(NK)21P/mpU2x01dp1ef

29、N1N=4xx50 x0.4X10-7(0.9598x192)2x0.163x7.5x10-3/3x2x3802=0.0378749定子槽比漏磁導九二K九+K九s1u1u1L1L1=1x0.410+1x0.830=1.24h2h，014-u1b(bb)0101110.82x0.924=+3.53.5+6.7=0.410=0.830L1h242r21=1.543(14.50.924)_2x4.4_ # #6.72x4.4=0.76 21其中Ku1=KL1=150定子槽漏抗X*s12mpl,C1ts!_XZK2l1dp1ef2x3x2x0.160 x1.24xCX36x0.95982x0.163=

30、0.440Cxx51定子諧波漏抗mtESCX*=181兀25K2Kefdp1s3x0.111x0.009C=X兀2x0.41x10-3x0.95982x1.368=0.5877Cx其中ES=0.00952定子端部漏抗單層交叉式繞組的端部漏抗與分組的單層同心式繞組相近則：0.47(l0.64t)CX*Ey工E1K2ldp1ef0.47(0.150-0.64x0.0993)CX0.163x0.95982=0.270Cxx53定子漏抗=X*,X*,X*1s11E1=(0.440+0.5877+0.27)Cxx=1.2977Cxx=0.049154轉(zhuǎn)子槽比漏磁導九二九,九二0.5+1.73二2.23s

31、2u2L20.5=0.5u2022h,二12L2(b+b)+九0212L2x1.30(1,5.5),1.330=1.73h/b2=7.6，b1/b2=1.83查表得俎=1.33055轉(zhuǎn)子槽漏抗s22mplXC1t2s1_XZl2ef2x3x0.160 x2.23CX32x0.163=0.821Cx56轉(zhuǎn)子諧波漏抗mp工RCX*=丄x2兀2Kefs3x0.111x0.0150C=X兀2x0.41x10-3=0.9023Cxx查表得工R=0.01557轉(zhuǎn)子端部漏抗l-1XE2*，.757MCxX1E2ef0.757x0.132CX0.163x4=0.150Cxx58轉(zhuǎn)子斜槽漏抗bX*，0.5(%)

32、2X*skt22=0.5(0.0130.0161)2x0.9023CX=0.29Cx59轉(zhuǎn)子漏抗X*，X*X*X*X*2s22E2sk=(0.821+0.9023+0.15+0.29)Cxx=2.1633Cx=0.081960總漏抗X*，X*X*12=0.13161定子直流電阻R1=p2N11-cNAat1c110.0217x10-6x2x192x0.3142x1.0936x10-6x1=1.196Q62定子相電阻標幺值R1*=RI1kwUN=1.196x6.58380=0.020763有效材料定子導線重量G，ClNZNAWCs11t1c1=1.05x0.314x32x36x1.0936x10

33、-6x8.9x103=7.393kg式中C為考慮導線絕緣和引線重量的系數(shù)，漆包圓銅線取1.05P為導線密度硅鋼片重量GFe=Kl(Dl5)2pfetFe # =0.95x0.163x(0.22+0.005)2x7.8x10-3=61.897kg式中5為沖剪余量，取5x10-3m64轉(zhuǎn)子電阻導條電阻折算值PKL4m(NK)2R=BB11dpiBAZB2_0.0434x10-6x1.04x0.195x4x3x(192x0.9598)296.4510-632=1.162Q式中KB是疊片不整齊造成導條電阻增加的系數(shù)端環(huán)電阻折算值PDZm(NK)2R=R_211dp1-R2砂2AZR2=0.043410

34、-6320.13243(1920.9598)22x3.14x4x250 x10-6x32=0.03716Q導條電阻標幺值RB*=0.02012RI1.16x6.58B_kw=U380 端環(huán)電阻標幺值RIRKWR*=RUN宀00643 # #轉(zhuǎn)子電阻標么值R2*=RB*+RR*=0.02655四)工作性能計算滿載時定子電流有功分量標么值r*=1111236ip=，_0.891.1236滿載時轉(zhuǎn)子電流無功分量標么值Ix*=1X*仃21+(1X*仃)2=1.0216x0.13944x(1.1236)2x1+(1.0216x0.1394x1.1236)2=0.181=1+X1=1+0.0491=1.0

35、21611X*2.536ms67滿載時定子電流無功分量標么值IiQ*=Im*+Ix*=0.469+0.143=0.65iQmx68滿載電勢標么值Ke=18ELi(Iip*Ri*+IiQ*XJ)=1(1.1236x0.0207+0.65x0.0491)=0.942與22項初設值Ke相符空載時電勢標么值18=1Im*X*=10.309x0.0419=0.9760mS1空載時定子齒磁密Bti0=(忌)Bt1=(0.9760.942)x1.58=1.637TL空載時轉(zhuǎn)子齒磁密 Bt20=(1，81，&a)Bt2(0.976(0.942)1.60=1.658T7273.74.75.76.77.78.79

36、.80.81. # #空載時定子軛磁密1，8Bj10=(亠)BJ1U1，&j1L(0.976(0.942)1.45=1.502T # #空載時轉(zhuǎn)子軛磁密1，8Bj20=(亠)Bj201，8j2L(0.976(0.942)1.242=1.287T # 空載時氣隙磁密1,p0976B=()B二()0.722=0.748T01，&0.942L空載時定子齒部磁壓降Ft10=Ht10Lt1=46.8x102x15.97x10-3=74.74A空載時轉(zhuǎn)子齒部磁壓降Ft20=Ht20Lt2=53-4x102X23x10-3=122-82A空載時定子軛部磁壓降Fj10=Cj1Hj10Lj1=0.40 x20.

37、1x102x78.81x10-3=63.36A空載時轉(zhuǎn)子軛部磁壓降Fj20=Cj2Hj20Lj2=0.43x8.90 x102x27.69x10-3=10.597A空氣隙磁壓降廠KB1.0250.7480.410-3F=仏二=244.05A0卩0.410-60空載總磁壓降F=F+F+F+F+F00t10t20j10j200=74.74+122.82+63.36+10.597+244.05=504.97A空載磁化電流Im02pF000.9mNK11dp1=22504.97=0.931920.9598=4.06A(四)工作性能計算82.定子電流標么值I*=(I*2+1*2)=(1.12362+0.

38、652)=1.249定子電流實際值，1.249x6.58=8.51Akw83.定子電流密度mm2Ji=aNAr=存法=3.89A1t1c184.線負荷mNIA7=1111Di133208.513.140.141，22132A # #85.轉(zhuǎn)子電流標么值*2*=(I*21p+1*2X) # #=(1.12362+0.18432)=1.139轉(zhuǎn)子電流實際值mNKr=I*I11dp122kwZ2=1.1396.5833840.959832=258.96A端環(huán)電流實際值=竺，2589632，659.4A2p23.14286.轉(zhuǎn)子電流密度導條電密 258.9696.452.685Amm2 # 端環(huán)電密2

39、.64Amm2I659.4A250R87.定子電氣損耗P*I*2R*=1.2942x0.0207=0.0347cu111PP*P0.0347x7.5x103=260.25Wcu1cu1N88.轉(zhuǎn)子電氣損耗P*I*2R*=1.1392x0.02655=0.0344Al222PAl2=PAl2*PN=0.0344x7.5x103=258WAl2Al2N附加損耗銅條轉(zhuǎn)子Ps*=0.02sPs=Ps*PN=0.02x7.5x103=150WssN機械損耗二級封閉自扇冷式Pfw=(3/p)2(D1)4X104=(32x(0.22)4x104=52.7W機械損耗標么值Pfw*=Pfw/PN=52.7/7.

40、5x103=0.00703fwfwN定子鐵耗(1)定子軛重量G=4pAtlLtlp，=4x2x2.934x10-3x78.81x10-3x7.8x103=14.43kgFe(2)定子齒重量G=2pA.1L.1fp，=4x2x8.26x10-3x15.97x10-3x7.8x103=4.116kgjjljlFe損耗系數(shù)Pht=6.8Ph.=5.1hethej定子齒損耗PFt=KPhtGt=2x5.10 xl4.43=147.2WFet1hett定子軛損耗PFj=K2Ph.G.=2.5x6.80 x4.116=69.97WFej2hejj定子鐵耗PFe=PFet+PFej=147.2+69.97=

41、217.17WFeFetFej對于半閉口槽按經(jīng)驗取K1=2K2=2.5鐵耗標么值PF*=PF/Pn=217.17/7.5x103=0.029FeFeN92.總損耗標么值為*=p*+P*+P*+P*+P*pcu1Al2fwsFe=0.0347+0.0344+0.02+0.00703+0.029=0.1251輸出功率PN7*=1+L*=1+0.1251=1.1251N1p效率=1-L*/PN7*=1-0.1251/1.1251=0.869%pN7(87%-86.9%)/87%=0.115%0.5%功率因數(shù)cosQ=I1p*/I7*=1.1249/1.294=0.87轉(zhuǎn)差率P*SN=A-1+p*+p

42、*+p*+p*Al2sFerfw0.03441,0.0344,0.02,0.0154,0.007=0.0319np+pp廠*=FetrFeirFerpN=(10.5)x147.2,(10.4)x69.977.5x103 =0.0154 #97.轉(zhuǎn)速nN=(60f/p)(1SN)=60 x50/2x(10.0319)=1452r/min98.最大轉(zhuǎn)矩倍數(shù)m1，SN2(R*+(R*2+X*2)111，0.03192x(0.0207+(0.02072+0.1312)=2.74（五）起動性能計算起動電流假設值It=（2.53.5）T*Ik=3x3.157x6.58=59.1Astmkw起動時定轉(zhuǎn)子槽磁勢平均值化尸Is；(NMN77Kui+Kdi2Kpi(Z/Z2)d，0)=59.1x32x0.707x1+0.95982x1x(36/32)x0.976=2836.5A101空氣隙中漏磁場的虛擬磁密Bl=卩0FJ2PC=0.4nx10-6x2836.5/2x0.4x10-3x0.9367=4.757T=0.64+2.5Ct+t1=0.64+2.50.412.3+16.1=0.9367由BL查得漏抗飽和系數(shù)Kz=0.44Lz 102齒頂漏磁飽和引起的