ТОЭ_1 / 2_2

2.2

http://www.toehelp.ru

:

EA = 100

B

T = 0,01 c

L = 5,82

1

= 91,8

R1

= 17,32

uab - ?

I)

EB

= EAe− j120

= 100e− j120 » (-50 - j86,603) B

EC

= EAe j120

= 100e j120 » (-50 + j86,603) B

!:

EA

I ′

2π

2π

A

ω =

=

» 628,32

T

0,01

′′

I A

I

A

C :

EB

I ¢

X L = ωL = 628,32 × 5,82 ´10−3 » 3,66

B

I

I ′′

1

1

B

B

X 1

=

=

» 17,34

E

ω 1 628,32 × 91,8 ´10−6

I ¢

I

I ′′

" :

R1 (- jXC1 )

17,32 × (- j17,34)

» 17,32 ×

17,34e

− j90

Z|| =

=

» 12,254e− j44,97

» (8,67 - j8,66)

17,32 - j17,34

R1 - jXC1

24,508e− j45,03

#:

Z = jX L + Z||

= j3,66 + 8,67 - j8,66 = (8,67 - j5) » 10e− j30

I A =

EA

=

100

= 10e j30

≈ (8,66 + j5)

A

Z

10e− j30

EB

100e− j120

− j90

IB

=

Z

=

=

10e

= − j10 A

10e− j30

100e

j120

IC

=

E

=

= 10e j150 ≈ (−8,66 + j5)

A

Z

10e− j30

$ 1- :

I A + IB + IC = 0

(8,66 + j5) − j10 + (−8,66 + j5) = 0

0 = 0

%.

" :

− jX

C1

17,34e− j90

− j14,97

≈ (6,834 − j1,828)

′

j30

I A =

I A

R − jX

C1

=

10e

24,508e

− j45,03

≈

7,075e

A

1

′′

R1

j30

17,32

j75,03

(1,825 + j6,827)

I A =

I A

=

10e

≈

7,067e

≈

A

R

− jX

C1

24,508e

− j45,03

1

′

− jX

C1

17,34e− j90

− j134,97

≈ (−5 − j5,005)

=

=

− j90

≈ 7,075e

IB

IB

10e

A

R

− jX

C1

24,508e

− j45,03

1

′′

=

R1

=

− j90

17,32

≈ 7,067e

− j44,97

≈

(5 − j4,995) A

IB R

− jX

10e

− j45,03

IB

C1

24,508e

1

− jXC1

j150

17,34e− j90

j105,03

(

)

I ′

=

I

=

10e

≈ 7,075e

≈

−1,835

+ j6,833

A

C R

− jX

− j45,03

C

C1

24,508e

1

′′

=

R1

=

j150

17,32

≈ 7,067e

j195,03

≈ (−6,825

− j1,833)

IC

IC

R

− jX

C1

10e

24,508e

− j45,03

A

1

http://www.toehelp.ru

2) :

& :

j

7

I ′′

6

5

I ′

4

I A

3

I

2

I ′′

A

1

0

+

1

2

I ′

I ′

A

3

B

4

5

6

IB

7

I ′′

8

B

9

10

11

9

8

7

6

5

4

3

2

1

0

1

2

3

4

5

6

7

8

9

& %:

http://www.toehelp.ru

j

120

110

- jX L I

100

90

-Z||I

80

70

60

50

E

40

30

20

10

EA

+

0

10

- jX L I A

-Z||I A

20

30

-Z||IB

40

50

EB

60

70

80

- jX L IB