Курс лекций по теоретическим основам электротехники. Исаев Ю.Н - 86 стр.

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86
ORIGIN 1:=
E
A
E
C
E
B
R
A
R
C
R
B
R
R
R
r
A
I
A
I
B
I
C
Рис. 3.10
Ua 100:=
ae
i 120⋅ de
g
⋅
:=
EUaUaa
2
⋅ Ua a⋅
()
T
:=
R 2
0
:=
r
5
:=
Ra
Rr
⋅
Rr+
:=
φ
E
1
Ra R+
E
2
R2⋅
+
E
3
R2⋅
+
1
Ra R+
1
R2⋅
+
1
R2⋅
+
:=
φ 18.182=
I
1
E
1
φ−
Ra R+
:=
I
2
E
2
φ−
R2⋅
:=
I
3
E
3
φ−
R2⋅
:=
I
T
3.409 1.705− 2.165i− 1.705− 2.165i+()=
Ir
I
1
R⋅
Rr+
:=
Ir 2.727=
I_R I
1
I
r
−:=
I_R 0.682
=
S I
1
⎯
E
1
⋅ I
2
⎯
E
2
⋅+ I
3
⎯
E
3
⋅+:=
S 886.364=
PI
1
()
2
Ra R+()⋅ I
2
)
2
R⋅ 2⋅+ I
3
()
2
R⋅
2
⋅+:=
P 886.364
=
Ir
()
2
r⋅ I_R
()
2
R⋅+ I
1
()
2
R⋅+
⎡
⎣
⎤
⎦
I
2
()
2
R⋅ 2⋅+ I
3
)
2
R⋅ 2⋅+ 886.364=
A
1
3
1
1
1
a
2
a
1
a
a
2
1
⎛
⎜
⎜
⎜
⎝
⎞
⎟
⎠
⋅:=
A
I_r
0
0
⎛
⎜
⎜
⎝
⎞
⎠
⋅
1
3
I_r⋅
1
3
I_r⋅
1
3
I_r⋅
⎛
⎜
⎜
⎜
⎜
⎜
⎜
⎝
⎞
⎟
⎟
⎟
⎟
⎠
→
I1
I2
I0
⎛
⎜
⎜
⎝
⎞
⎠
1
3
Ir⋅
1
3
Ir⋅
1
3
Ir⋅
⎛
⎜
⎜
⎜
⎜
⎜
⎜
⎝
⎞
⎟
⎟
⎟
⎟
⎠
I0
U0
R
−
I2
2U2⋅
R
−
I1
Ua 2 U1⋅−
R
U2
I2
−
R
⋅
2
Ir
−
R
⋅
32⋅
U0 I0− R⋅
Ir
−
3
R
⋅

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