三相鼠笼式异步电动机的一个设计实例(Y-180L-6 - 15kW)(2)

校正系数C2 C2=0.7

38．空气隙所需安匝

ATg?0.8Bg?ge

=0.8?749.383?0.594=356.11

39．饱和系数

FATT1?ATT2?ATgT?ATg?36.2782?62.41658?356.11356.11

?1.277140．总安匝

AT?ATT1?ATT2?ATC1?ATC2?ATg

=36.2782+62.41658+356.11+40.67849+5.403 =500.886

41．满载磁化电流

I2.22AT?pm=2.22?500.886?6m?=7.69

1?Z?1Kdp13?306?0.94542．满载磁化电流标么值

iIm?m7.69I==0.58444 KW13.157943．激磁电抗

xm?11i==1.711 m0.58444（三）参数计算 44．线圈平均半匝长（估

算） 双层线圈 lZ?LB?2CS=240+2?61.655 式中： LB?直线部分长??l?2d1=240+2?20=240

C?YS?2cos?=106.86062?0.8666?61.655

???Di1?2?hSO?hS1??hS2?R?Y?p?

?3.14157(205?3?17.8?3.8)86?9

?106.866式中： d1=20mm

cos??1?sin2??1?0.4992?0.8666 C2=0.7 ATg=356.11

FT=1.2771

AT=500.866

Im=7.69A

im=0.58444

xm=1.71

lZ?363.31 LB=240mm CS=61.655

?Y=106.866mm

d1=20mm

5

bS1?2Rsin??bS1?2R?2bT1

?45．双层线圈端部轴向投5.5?2?3.8?0.499

5.5?2?3.8?2?6.576f?30.7658mm

f?C?sin?=61.655?0.499=30.7658

影长 47．漏抗系数

48．定子槽单位漏磁导

式中：

49．定子槽漏抗

式中：

50．定子谐波漏抗

式中：

dS2.63f?P2C2?leff?Z?1Kdp1?x?p?U25

1?102.63?50?15?20.09?(306?0.945)2 =6?3802?105?0.03825?S1?KU1??U1?KL1??L1

=0.3842?0.91667+0.9375?1.237789 =1.5216

KU1?0.916667 KL1?0.9375 ?U1?0.3842

xlS1?1?m1?p??S1leff?K2Cx

dp1?Q1=

200?3?6?1.5126200.9?0.9452?54Cx =0.5620Cx

无径向通风道时l1?l=200mm

x???m???d1?1p?2??S??ge?K2dp1?FCx ?T =??3?107.3377?1.026714?10?2?3.141592?0.594???0.9452?1.277 =0.4945Cx

?S?1.026714?10?2

d

?S1=1.5216

KU1?0.916667

KL1?0.9375

?U1?0.3842

xS1=0.5620Cx

l1=200mm

xd1

=0.4945Cx

6

51．定子端部漏抗

52．定子漏抗

53．转子槽单位漏磁导 式中：

54．转子槽漏抗

55．

式中：

56．转子端部漏抗

x25fe1?1.?d1?0.d?lCx

eff=

1.2?20?0.5?30.7658?200.9Cx

=0.2113Cx

x1?xS1?xd1?xe1

=(0.562+0.4945+0.2113) Cx=1.2678Cx =0.048493

?S2??U2??L2=0.5+3.341641=3.841641 ?U2?0.5

?L2?3.341641

xp??S2?l2?m1?S2lQCx

eff?2=200?3?6?3.841641200.9?44Cx

=1.56454Cx

x??m?d2?1??p???R?2?g?C ?e?FxT=??3?107.3377?0.0153888?3.141592?0.594??1.277Cx=0.6619Cx

?R?0.015388

xe2?0.757l?DRpC0.757?156x=200.9Cx eff=0.098Cx

DR?156mm

xe1=0.2113Cx

x1=0.048493

?S2=3.841641

?U2?0.5

?L2?3.341641

xS2

=1.56454Cx

xd2=0.6619Cx

xe2=0.098Cx

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57．转子斜槽漏抗

?bSKxSK?0.5????11.92641???0.5xd2???0.6619Cx ?22xSK=0.2216Cx

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

式中： 式中：

63．转子电阻 导条电阻

?t2??14.5727? =0.2216Cx

x2?xS2?xd2?xe2?xSK

=(1.56454+0.6619+0.098+0.2216) Cx =0.0974

x?x1?x2=0.048493+0.0974=0.1459 R??lz?Z?11?a1?S1?N

1?100?0.0217?36.331?3062?1.767?1?100?0.68264?

r1?RI1KW13.1579U ?0.68264??0.023637 1380GCu?C?lZ?Z1?Q1?S1?N1???10?5

=1.05?36.331?54?34?1.767?1?8.9?10?5 =11.015Kg

GFe?K2Fe?l??D1????7.8?10?3

=0.92?0.2?290?290?7.8?0.001 =120.7Kg

C=1.05

?=8.9

S1=1.767mm2 KFe=0.92

?=0.5mm

R?KB?lB??B?B?K???SB?Q?2???25.0858??1.04?24?0.0434??107.7?44??

=0.478

x2=0.0974

x=0.1459

R1?0.68264?

r1?0.023637

GCu=11.015Kg

S1=1.767mm2

?=0.5mm

RB=0.478?

8

端环电阻

??RR=0.06985?

R?K?2?DR?R??R????p2?SR? ? ?25.0858??2?15.6?0.0434??3.14159?36?430??

=0.06985

式中：

2

K?m1?Z?1Kdp1?104

?3?306?0945?104?25.0858

KB=1.04 KB=1.04 转子导条面积 SB=107.7 SB=107.7 端环截面积

SR=430

SR=430

转子导条或端环的电阻?

B=0.0434，?R=0.0434

系数

导条电阻标么值

rIB?RKW13.1579BrB=0.01655

U=0.478=0.01655 1380端环电阻标么值

rIR?RKWR=0.0698513.1579rR=0.00242

U=0.00242 1380转子电阻标么值 r2?rB?rR=0.01655+0.00242=0.01897 r2=0.01897 64．满载电流有功部分

iP?1iP=1.117585

??=10.89478?1.117585 65．满载电抗电流部分

is?Km?x??iP?2?1??K2m?x?iP??is=0.19266 ?1.02834?0.1459?1.1157852?1??1.02834?0.1459?1.117585?2?0.19266

式中： Km?1?im?x1=1+0.048493?0.58444

Km=1.02834

=1.02834

66．满载电流无功部分 iR?im?ix=0.19266+0.58444=0.7771 iR=0.7771

67．满载电势

1??L?1??iP?r1?iR?x1?

1??L=0.9359

=1-(1.117585?0.023637+0.7771?0.048493) =0.9359

9

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