. PC, , Zp, -, Zp , -, - ( ) . , Zp : U=IZ (. 8.8). Zp I, PC, I, Zp:
Zp = U / I = I Zp / I = Zp
, . , , , .
, . . 12.1 .12.3. , , √3 U. PC .
I , ;
Z1 ; L ;
Z 1 1 .
, .. I(3) = √3 U I(3) , PC:
12.1
Up | Ip | |
AB | Uab | IaIb |
BC | Ubc | IbIc |
CA | Uca | IcIa |
, , , , L. : U(2)=U=2IZ1. I = I - I =2I. :
Z(2) = U(2) / I(3) = 2I Z1 /2I.
. 12.7. .
, .
, . , , (. 12.8). PC, . 12.2 U : I =I + 3I0.
. Z0 Z1 . , . 12.2 , Z , , .12.1. Z= Z1. 12.2
|
|
Up | Ip | |
A | Ua | I + 3I0 |
B | Ub | I + 3I0 |
C | Uc | I + 3I0 |
= (Z0 Z1) /3 Z1; 3 Z=U/ (I + 3I0) , .
, .. , . , Z 0= 3.5 Z 1 k = (3,5 1)/3=0,83.
.12.8.. I+ 3I0.