. , , , . , I U . , :
, , . ( !) (.1.0.11).
, , , c . , , p1 p2 , : p1=uAB iA (1) p2=uCB iC (2), iA iC - , ; uAB uCB - , . (1) (2) , :
p1+ p2=UAB iA + UCB iC =(UA -UB)iA+(UC-UB)iC=UAiA+UB(-iA iC)+UCiC= pA+ pB + pC (3)
(- iA- iC)= iB, iA+iC+ iB=0, pA=uA iA; pB=uBiB; pC=uCiC. , .
(3) : P=WI+WII=IAUABcos()+UCBICcos()
, . , j. j.
(I1=I2=I3 UAB=UBC=U). UAB IA, UCB IC (.1.0.11). =j + 30; =j - 30, j - ; 30 - . :
P = UABIAcos(j+30)+UCBICcos(j-30)= UIcos(j+30)+UIcos(j-30) (4)
UAB
IC IA
UCB
UCA 30
UB
UC
C B
.1.7.2.
, j = 0 (.. ) .1.7.3. j> 0 , j = 60 , .
|
|
, j > 60 , . (.. ). , , P = PW1 + PW2.
, () .
P = PW1 + PW2= UI cosj, PW1 PW2= UI sinj = , tgj= = (5)
Q= UI sinj - .
j=arccos (6)
, . , . .
1. (.1.7.4.)
2. () P2 .
3. P1 .
4. ( P2).
5. (), ( 2 )
6. , , .
R, L P1 U*
I*
1 A
R,L
B
R,L K1
I* I* C
R1 U*
R1
R1 P2
K2
. 1.7.4. .
P Bm | cosφ | φ | W1 | W2 | IA A | IC A | UAB B | UBC B | UCA B | |
1. ?
2. .
3. , .
: / 1,3/.
1. . . .. . . .., ., 1985.
2. .., .. . .., ., 1985.
3. . . . , ., 1975.