Gio trnh My đin

Trang 25
1.8 TƢ
̀
TRƢƠ
̀
NG LU
́
C CO
́
TA
̉
I CU
̉
A MA
́
Y ĐIÊ
̣
N MÔ
̣
T CHIÊ
̀
U

1.8.1 Đi cƣơng:





 (

) do 



 . 










 
f
 
b
. 











.
2a: 



.
i

: 1 

.
I

: .
a
I
i
ö
ö
2


=
]m[ö
ö
D.
i.N




b) Phn ng phn ng trong my đin mt chiu:
 



1 



 , 
























0 (B = 0).
 



 ,  
.












 , 
, 








































 , nên








 . 









 . 




, 




 0, 




























































 . 


  N
S





 ( 







 0,5
Kw) 








 




































































1.8.4 Tƣ
̀
trƣơ
̀
ng dây quâ
́
n bu
̀
:


















, 





.

Gio trnh My đin

Trang 28





















.