u = U1m sin (wt+α) (2.5)
α .
μ=∞, L= const), R1 L1
Ulm sin (wt+α) = R1 i1 + L1 (di1/dt). (2.6);
, ,
i= i+ i (2.7)
() , Ut
i=I max sin (wt+α φ) (2.8)
I1 max =U1max / Z
Z = √R12+ωL12 , |
; , , t=0; φ - ( ) ; Im - .
i= - I max sin (α φ) τ/t (2.9)
, τ.
, t =0, i+ i = 0, . . () .
α, α φ = 0, i=0 . , α φ = π/2, i , t=0 1max. im= 21 (. 2.2).
, , .. φ= 90. , , (2.9), (2.10) (2.12), , . 1.5 .
, , , i1 = ω1 d /dt .
(2)
( Ulm /ω1) sin (wt+α) =(R1/ L1) + (d/dt). (2.10)
:
= max sin (wt+α π/2)= max cos(wt+α) (2.11)
:
max = L1 Ulm / ω1√ R12 +w L12; φ=arctg (wL1/ R1 ≈π/2 (2.12)
:
|
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=( max cos α ) τ/t (2.13)
α = π/2 ( ), φ = π/2, = 0. .
, α = 0,
= - maxswt + (max + )τ/ t (2.14)
, (2.15), (2.16), (2.19) (2.20), . 2.3.
. 2.3. () ()
, , , , 100 120 .
.
1. .. ?
2. , ?
3. .. .
4. ?
5. ?
6. ?
3
( ): , .
0, . , , : s, , ad, ( ). d 0 () (), r =0 , 90. d , .
.3.1. τ: - ; - ; -
.
, , d, . (. .3.1, ).
, . τd τd, ( "). (, 0,05 - 0,1 ) , (, 0,5 - 1 ). d . (. .3.1,).
|
|
( ), ( ). (. c,3.1, ).
.3.2
, , , . . . . , () , , 0 ( ).
d - , , . , -, , -X 0. , -, , 0 - ( ). , .
. 3,2 . t = 0 i0 ( )
i0 = i + t0 + i0 (3.1)
i - ; i0 i0 - , , .
i0,
i0 = i + t0 (3.2)
i i ( )
i = i + i0 -t/τ + i0 -t/τ (3.3)
i = i + i0 -t/τ (3.4)
τ ;
τ .
,
i = i0 -t/τd = (i + i0 + i0) -t/τd (3.5)
τd - .
() : . t=0 . , , .
|
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. , , .
. 3.1 , s, ad, , .
. . Ls, L ad, L, L . xs, x ad, x, x .. (.3.3) , . , .3.3, , x ad, x, x , xs . .3.3, , x ad, x , , xs . ( ) .3.3, , xs, x ad .
.3.3. : - ; - ; -
d"
d"
(3.6)
d .
(3.7)
d .
xd = xs + xad (3.8)
:
τ d0 = x0 /ωr (3.9)
τ d0 = x0 /ωr (3.10)
x ,x ; r , r .
, (). d / d, d / d.
(3.11)
, . .
(3.12)
r a .
xd, xd,xd - . :
|
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(3.13)
( t = 0)
Io =E 0 /xd (3.14)
( t = 0)
(3,15)
E0, E0, E0 - .
C , . . () , ... ( ..). - . .., .
1 .. () () ( ). ?
2. ?
3. ..?
4. . ? .
5. ..?
6. .. ?