edektrotekhnika_k_r_2

E ,

Z1,

Z2,

Z3,

Z4,

1

220

10 – j35

15 + j5

30 – j14

25

+ j25

2

220

15 + j10

12 – j25

20 + j17

18 – j7

3

380

30 – j20

25 + j20

20 – j30

15

+ j35

4

127

10 + j10

5 – j14

15 + j7

18 – j20

5

220

17 – j20

15 + j15

5 – j30

20

+ j14

6

380

20 + j25

35 – j20

20 + j20

30 – j5

7

127

5 – j20

10 + j14

18 – j8

7

+ j7

8

220

10 + j17

12 – j35

15 + j10

25 – j5

9

380

30 – j25

7 + j35

17 – j20

25

+ j15

0

127

20 + j7

10 – j18

14 + j14

7 – j25

9.

0.

Z

E A

1

E A

Z1

Z

E B

4

E B

Z2

Z2

E

Z

EC

C

4

EA Y A EB Y B

EC Y C

U0

,

Y A Y B

Y

C

Y A ,

Y B , Y C – :

Y A =

1

; Y B =

1

; Y C =

1

.

Z A

Z

Z C

UC

EC

U 0.

:

I A

U A

; I B

U B

;

IC

UC

.

Z A

Z B

Z C

I AB

U AB

; I BC

U BC

; ICA

UCA

,

Z AB

Z BC

Z CA

,

U AB

EA

EB

U BC

EB EC , UCA

EC

EA .

I A ,

I B ,

IC

~

~

~

~

I C ,

S

S A

SB

SC

EA

I A EB

I B EC

I A ,

I B , I C – .

–

, – :

~

P jQ

S

P

~

~

Re(S )

Q Im(S ) .

Q

QAB QBC QCA .

,

. ,

I A

12e j 30

Z A rA jxA 10 j20 ,

P I 2 r

122 10 1440 ,

A

A A

QA I A2 xA 122 20 2880 .

~

jQ .

S

UA

EA

IC

UCA

I A

U AB

j

0

I B

U 0

E

UB

C

B

UC

IB

EB

C

IC

B

,

,

U A

, U B , UC . 0 .

.

4

, ZA –

Z B

( I A

U A ),

– ( I B

U B

B ),

Z C

–

90 ).

( IC

UC

I C

U CA

U AB

j

I A

I CA

AB

I AB

I BC

IBC

. 5

, Z AB –

AB ), Z BC

–

( I AB

U AB

90 ),

( I BC

U BC

Z CA – ( ICA