при p = 1    k = 
5.94
0.26 · 490
  = 0.046  

21.3
Frequency feedback links (Fig. 9б)
Hосч = 
1
Gосч(p)
  = 
1
GБЧЗ(p)
  · 
2π
p
  · 
1
Gг1(p)
  · 
1
G5
  =
= 
(1 + p · 0.2)(1 + p · 0.02)2(1 + p · 0.047)
0.15 (1 + p · 2.65)
  · 
6.28
p
  · 
 
·
(1 + p · 0.055)6
0.00638 / ((1 + p · 5)(1 + p · 2.4)) · p · 885
При p = 1    k = 
6.28
0.15 · 2.65 · 0.00638 · 5 · 2.4 · 885
  = 0.233
Transfer function of closed inner excitation control loop

As in section 7.1.5, we sum two closed loops having common

forward links: loop with excitation feedback (Gзв-1) and

loop with frequency feedback (Gзв-2). Thus:

Gзв(p) = Gзв-1 + Gзв-2
Using LAFC (Fig. 10):
Gзв-1 = 
Gв(p)
1 + Gв(p) Hосв
Gзв-2 = 
Gв(p)
1 + Gв(p) Hосч
We find graphically (page 21.4)
Gзв(p)

=

 Gзв-1 + Gзв-2

≈

 
0.052
(1 + p · 0.0047)