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3.13 Y-??????????

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Title: 3.12 Author: huanglu Last modified by: huanglu Created Date: 10/1/2003 9:23:48 AM Document presentation format – PowerPoint PPT presentation

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Title: 3.13 Y-??????????


1
3.13 Y-??????????

???????????
?????????????????,?????????????????????
?????????????
2
  • ??????????????

??????????????????????,?????????????????????
?????????????
??????,?
????????
??????????
3
Y????????????
2
r12
1

1
2
R1
R2
r13
r23
R3
3
3
r12
R1
R2
1
2
2
1
r23
r13
R3
3
3
4

r12
R1
R2
1
2
2
1




u1
r23
u2
r13
u1
u2
R3

3
3
R??
G??
G??
-1

5

-1


????
6
  • ??

?
7

?
R1
R3


R5
R4
R2
R1
R3
r13
r15
r35
R5
R4
R2
8

R1
R3
r13
r15
r35
R5

R4
R2
r13
r35
r15
R2
R4
9
????????????
?
???????
i1
i2
N
u1
u2
i1
i2
N
u1 -
u2 -


i1
i2
u1
u2
10

???KVL


??????,??????
????
11


12

13

14

15

16
??????(P64)
  • ???????????????

i1
i2
N
u1
u2
???????????
i2
i1
i2
i1
N
N


US
US
I
I
? II
17

i2
i1
i2
i1
N
N


US
US
I
I
(b)
II
(a)
  • ???????G????

??(a)
??(b)
??
18
??????(P64)
  • ???????????????

i1
i2
N
u1
u2
???????????
i2
i1
i2
i1
N
N


IS
U
IS
U
? UU
19

i2
i1
i2
i1
N
N


IS
U
IS
U
UU
(b)

(a)
  • ???????R????

??(a)
??(b)
??
20
  • ??H????

G????
21
  • ??A????

R????
22

?
??
23
??
  • ?????????,??????

24
  • ????????????,?????

?????????????,?????
??????????????????,???????? ??????????
25
??????????????
i1
i2

u1 -
u2 -
G??????
G11
G22
G21 u1
G12 u1
i1
i2
R11
R22
R??????
u1 -
u2 -


R21 i1
R12 i2
-
-
i1
H11
i2
H??????
u1 -
u2 -

H12 u2
H22
-
H21 i1
26
??????????????
  • R????

27

i1
i2

u2 -
u1 -

R12
?????
i1
i2
u2 -
u1 -
R12
28
??????????????
  • G????

i1
i2
-G12
u2 -
u1 -
29

?????

i1
-G12
i2
u2 -
u1 -
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