, .. :
E 1 · I 1 E 2 · I 2 + E 3 · I 3 =
= ·(R 1 + R 01) + ·(R 2 + R 02) + ·(R 3 + R 03) + · R 4 + · R 5 + · R 6; (1.19)
:
12 ≈ 12, .
:
, (1.20)
: . (1.21)
E 1 |
E 3 |
R 3 |
R 6 |
R 03 |
R 01 |
a |
c |
d |
e |
f |
I 1 |
I 3 |
I 6 |
R 1 |
. 1.6.
φf = 0;
φa = φf + E 3 I 3· R 03 = ;
φc = φa I 6· R 6 = ;
φe = φc I 1· R 1 = ;
φd = φe E 1 I 1· R 01 = ;
φf = φd I 3· R 3 = ≈ 0.
(. ).
. 1.6.
2.
R 1 |
W |
L 3 |
C 2 |
L 1 |
R 3 |
a |
b |
c |
I 1 |
I 2 |
I 3 |
:
= ; f = ; C 2= ; L 1 = ; L 3 = ; R 1 = ; R 3 =
1. .
2. :
ω = 2 πf = 314; (2.1)
XL = ωL; (2.2)
XC = 1/(ωC); (2.3)
3. :
Ż = R + j (XL XC); (2.4)
Ż 1 =;
Ż 2 =;
Ż 3 =.
4. :
Ż = Ż 1 + Ż bc; (2.5)
Ż bc = (Ż 2 ∙ Ż 3)/(Ż 2 + Ż 3). (2.6)
Ż bc =.
Ż =.
5. :
:
. (2.6)
:
:
:
:
:
i = Im ·sin(ωt + ψi); (2.7)
i =.
:
:
u 1= Um sin(ωt + ψu); (2.8)
u 1=.
bc:
2- :
3- :
|
|
:
P = I 2· R = I 2·Re(Z). (2.9)
P = .
.
; (2.10)
2 ≈ 2
; (2.11)
40 ≈ 40.
: 1 = 10 ; 1 = 1 .
+1 |
+ j |
I 1 |
I 2 |
I 3 |
E |
Uab |
Ubc |