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Tài liệu ĐỘNG CƠ KHÔNG ĐỒNG BỘ MỘT PHA pptx

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

5.1 :







 , 



, 








Watt, 








 110 V/220V. 





















1 



 70% 






 3 pha,








 









 ,






 1 






 50% 
3 pha.




 1 

 1 












.
5.2 












1 PHA :


















 ,





 1 







 ,










.
5.2.1.



(Stator):





 : , , . 






 3 pha, 










, 






0
90
.
5.2.2.


(Rotor):






1 








 ,  

, 








, 







5.3 













:



















 1 pha, 


 



.

































5.3.1 














  










:



































tIi
m

sin

1 








, 

















 . 
:
 
4
1
T
t 
,  , 










 , 












 .  







B



T
B

(

) 
N
B

() 
, 


B


2
B
BB
NT



.
 
4
T
<
2
t

<
2
T
,  , 
B

 , 








 . 
B


T
B


N
B


2
B
BB

NT




B







.
 
2
3
T
t 
,
0i
,
B

= 0, 
B

= 0 
T
B



N
B








.
 
2
T
<
4
t
<
4
3T
,
i
< 0,
B



, 






 , 


NT
BBB













2
t
.
 
4
3
5

T
t 
,
m
Ii 
, 
B














trên, 


B


T
B



N
B


B


2
B
BB
NT










1
.


























,  
































.
5.3.2 Môment quay:








T
B


N
B

 


T


N


, .















. 
không (n = 0), 

 (M = 0), 












, 










, .



 , 









 1 
















 , 


5.4 





 





 PHA:
5.4.1 













:







 1 
















  , 










 .
, 









 , 




 90
0



gian, v 90
0



gian. 























, 




















 ; trong






























dây. 







,  










 , 








 , 


( i
A
) ( i
B
) :

tIi
mA

sin


)90sin(
0
 tIi
mB








 
A
, i
B








 
1
= 0, 
A
= 0, 







B
= -I
m

, 








2


1
. 













B
 , 







B


1
A
2

1

2

 
4
2
T
t 
, i
A
= +I
m
, i
b
= 0, 
A


1

2
, 


B



1
B
2

1

2

 
2
3
T
t 
, i
A
= 0, i
B
= +I
m
, 



B


1
A
2
, 





2

1

 
4
3
4
T
t 
, i
A
= -I
m
, i
B

= 0

, 


B


1
B
2
, 





2

1





1/2 

, 







B



1/2 .














 90
0


,
 90
0












.
5.4.2 





1 

 hai pha:
a. đô
̣
ng cơ không đô
̀
ng bô
̣
1 









 , 



























 , 




. 









 . 
 , 








 . 














 




.








1 









b) 





1 







:











 , 






















 





 (





,).  , 





























 . 






 75% 





, 








, 






, 











.








1 









c)  





1 







 








:













 , 












, 





, 














 . 



,






 (C
LV
+ C

) 



,











 , 







 ), 




75% 
















 , 
 ,  


hai pha.
d) 





1 



:
, 








 1/4 , 1/3 HP,






 






, 









, 







30
0
-45
0
. 














.












1 




e) :
















 

 


, 










, 





 







, 
 . 








 , 






 1/3 



, 








.





















 , 










 . 



:








 1 








. 























stator 

























.
1 





 











,







, 

 , 












, 









.











5.5 







:








 1

















, 


.







5.6   



 1 PHA HAI







:




 , 



























 110V/220V,  6  , 


4 





2 m. 





 110V
 ,  220













.










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