h12+h22=20mm、b02=1mm
转子齿宽计算如下:
?[D2?(h02?h12?h22)]Z213?[147.3?(0.5?20)]?b12?bt213?1333?6.3?7.07mm
10、极距 ?=
?Di1??148==77.45mm 2?32p11、定子齿距 t1=12、转子齿距 t2=13、节距 y=6
?Di1??148==12.92mm 36Z1?D2??147.3==14.02mm
33Z214、转子斜槽宽 bsk?t1=12.92mm 15、每槽导体数 Ns1=42 16、每相串联导体数 N?1= N1?17、定子电流初步值 I1'=18、槽满率 (1)槽面积
22r21?b11?r212?4.4?6.8?4.42(h11?h21?h)?(11.5?2)?==104.51As=2222Ns1Z142?36==504 3?1m1a1N?12?504?252 24.82Ikw==7.24A
?Ncos?N0.853?0.78mm2
(2)槽绝缘占面积:由绝缘等级B可知,?i=0.3mm
Ai=?i(2hs'??r21)=0.3(2?11.5??4.4)=11.05mm2
(3)槽有效面积 Aef=As-Ai=104.51-11.05=93.46mm2
Ni1Ns1d21?42?1.332(4)槽满率 Sf?==0.79(符合要求)
93.46Aef19、铁心长 lt=180mm
铁心有效长 lef?lt?2??180?2?0.35?180.7mm 净铁心长 lFe?KFelt?0.95?180?171mm 20、绕组系数Kdp1=Kd1Kp1
q1?2?30sin2?2?0.97 (1)分布系数 Kd1=
?30q1sin2?sin22?(2)短距系数 Kp1=sin??1
2sin21、每相有效串联导体数 N?1Kdp1=504?0.97=488.88
二、磁路计算 22、计算满载电势
'1??L?0.931?0.0108lnPN?0.013p?0.931?0.0108ln5.5?0.013?3?0.91'E1?(1??L)UN??0.91?380?345.8V
23、每极磁通 ??E1345.8??0.00637Wb
4KNmKdp1fN14?1.11?0.97?50?25224、每极齿部截面积
定子 At1?KFeltb?18?06.?33?61tZ1?p0.95转子 At2?KFeltb1Z2p?0.95?18?07.?07?5t232 m64m94.58122 m66m49.3425、轭部截面积
定子轭部计算高度 圆底槽
h'j1?D1?Di1r210?1484.4?hs1?21??(0.8?11.5?4.4)??15.77mm 2323定子轭部截面积 Aj1?KFelth'j1?0.95?180?15.77?2696.67mm2 转子轭部计算高度 平底槽
h'j2?D2?Di22147.3?482?hs2?Dv2??(0.5?20)??0?29.15mm 2323转子轭部截面积 Aj2?KFelth'j2?0.95?180?29.15?4984.65mm2
226、空气隙面积 A???lef?77.4 5.22?518?0.713mm9927、波幅系数
假设饱和系数 Ks'?1.20 由Fs?f(Ks)曲线可知 Fs?1.486 28、定子齿磁密 Bt1?Fs?1.48?60.00637??1.4T6 At16494.?58?610 Ht1?16.3A/cm 29、转子齿磁密 Bt2?Fs?1.48?60.00637??1.4T2 At26649.?34?610 Ht2?13.6A/cm 30、定子轭磁密 Bj1?1?10.00637??1.1T8 62Aj122696?.6?710 Hj1?6.16A/cm
31、转子轭磁密 Bj2?1?10.00637??0.6T4 62Aj224984?.6?510 Hj2?1.91A/cm
32、空气隙磁密 B??Fs?1.48?60.00637 ??0.67T6?6A?13995?.221033、齿部磁路计算长度
r?211.5??4.4?12.97mm 定子 圆底槽 Lt1?(h1?1h)2?111313转子 平底槽 Lt2?h1??220mm 2h234、轭部磁路计算长度
'1?(D1?hj1)1?(210?15.77)定子 Lj1???50.82mm
22p22?3''?(D?h11?(48?29.15)i2j2)转子 L'j2???20.19mm 22p22?335、有效气隙长度 气隙系数计算如下:
K?1?t1(4.4??0.75b01)12.92(4.4?0.35?0.75?3.5)??1.295 22t1(4.4??0.75b01)?b0112.92(4.4?0.35?0.75?3.5)?3.5t2(4.4??0.75b02)14.02(4.4?0.35?0.75?1)??1.032 2t2(4.4??0.75b02)?b0214.02(4.4?0.35?0.75?1)?12K?2?K??K?1K?2?1.295?1.032?1.34
有效气隙长度 ?ef?K???1.3?40.?35mm0. 47136、齿部磁压降 定子 Ft1?Ht1Lt1?16.3?12.?9?71?0 2A1.14 A27.2 转子 Ft2?Ht2Lt2?13.6?20??110?37、轭部磁压降 由Cj?f()曲线可知
?h'j2?h'jh'j1??15.77?0.20 Bj1?1.18T于是Cj1?0.68 77.49?29.15?0.38 Bj2?0.6T4 于是Cj2?0.22 77.49 定子
Fj1?Cj1Hj1L'j1?0.68?6.16?50.82?10?3?0.21A
转子 Fj2?Cj2Hj2L'j2?0.22?1.91?20.19?10?3?0.01A 38、空气隙磁压降 F??39、饱和系数 Ks?K??B??0?1.3?4?30?.35?1074??1?00.676?252.A4 2F??Ft1?Ft2252.42?21.14?27.2??1.19 F?252.42Ks?Ks'1.19?1.20 误差???0.8%??1%(合格)
Ks'1.2040、总磁压降
F0?FF2?F52.42?21.1?4??tF1?tj1?Fj22?27.?2 0A0.?21?0.1300.941、满载磁化电流 Im?2pF0?0.m91N1Kdp12?3?300.98?2.73A6
0?.9?3?2520.97??42、满载磁化电流标幺值 ImIm2.736??0.5 7Ikw4.82