|
Parameters of structural diagram |
13.2 |
|
|
K4 — reflects demagnetizing effect of armature
reaction during
change in rotor angle |
| K4 = |
[ |
|
· |
|
] |
Efd=const = U∞·kо·(Xd−Xd′)·[ (Xq+Xe)/sin(δ−α)0 − |
|
| − Re·cos(δ−α)0 ] = 0.65·0.51·(2.33−0.307)·(2.33+0.4)·0.92 = 1.68 |
|
|
K5 — change in generator terminal voltage Ua
during small change in rotor angle and constancy of flux
linkage along d axis: |
| K5 = |
[ |
|
] |
(E′q=E′qo) |
= |
{ |
( |
k0 |
· |
U∞ |
· |
·Xd′·Uaq0 /Ua0 )[Recos(δ−α) |
- |
|
| −(Xq+Xe)·|sin(δ−α)|]− |
| - |(kо·U∞·Xq·Uad0 /Ua0)[(Xd′+Xe)·cos(δ−α)+ |
|
| +Re|sin(δ−α)|]} |
= |
|
|
0.51·0.65·0.307·0.67·[−(2.33+0.4)·0.92] |
|
1 |
|
− |
|
| − |
|
0.51·0.65·2.33·(−0.73)·(0.307+0.4)·0.39 |
|
1 |
|
= −0.17 + 0.15 = −0.02 |
|
|
K6 — change in generator terminal voltage during
small change in flux linkage along d axis and constancy of
rotor angle: |
| K6 = |
[ |
|
] |
δ=δ0 |
= |
|
·[1−kо·Xd′·(Xq+Xe)]− |
|
| −|Uad0/Ua0| ·kо·Xq·Re |
= |
|
[1−0.51·0.307·(2.33+0.4)]=0.388 |
|
Ko=0.51
| K1
= 0.85 |
K4
= 1.68 |
| K2
= 1.29 |
K5
= −0.02 |
| K3
= 0.26 |
K6
= 0.388 |
|