dfig nusmir mekić
TRANSCRIPT
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8/17/2019 DFIG Nusmir Mekić
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8/17/2019 DFIG Nusmir Mekić
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C p
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8/17/2019 DFIG Nusmir Mekić
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8/17/2019 DFIG Nusmir Mekić
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CO2
CO2
η
(1±30% = ωS
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3 −
4 m/s
15 m/s
25 m/s
P m = 1
2ρv3wπr
2c p(λ)
P m
ρ
kg
/m3
r
vw m/s C p λ
λ = ωtr
vw
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8/17/2019 DFIG Nusmir Mekić
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C p
C p
C p
C p
C p λ C p
C p
10 − 15 m/s 15 m/s
20 − 25m/s
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λ
C p
ωs
= 2πf s
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8/17/2019 DFIG Nusmir Mekić
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ωs = ωm + ωr
s = ns−n
ns
f r = s ·f s
ωs
ωm ωr
ωm + ωr > ωs
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8/17/2019 DFIG Nusmir Mekić
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ωs
ωm ωr
ωm ωr
ωs = ωm + ωr
ωs > ωm ⇒ ωr > 0, s > 0
ωs = ωm ⇒ ωr = 0, s = 0
ωs < ωm ⇒ ωr < 0, s < 0
ωs > ωm
ωr = 0
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ωm > ωs
180◦
sf s
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8/17/2019 DFIG Nusmir Mekić
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Rs X s = ωsLs
X m
RFe
Rrs
X rs
= sωsLrs
= ωsLr
V r
V rs
V s
RsI s
jX s R
r/s
I r jX r
V rs
jxµ
I µ
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8/17/2019 DFIG Nusmir Mekić
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V s
RsI s jX s R
r/sI r
jX r
Re
s
jX e
s
jxµ
I µ
Z e
P em =
ωsM m p
P em = (U s−RsI s)I s
I s =U s+
U 2s −
4RsωsM m3 p
2Rs
E = U s − I s(Rs + jX s)
U s I s
I m = E
jX µ
I r = I s − I µ
U rs
= E − I r(Rrs
+ jX r)
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8/17/2019 DFIG Nusmir Mekić
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U r = sE − I r(Rr + jsX r)
Res
+ jX es
=U r
s
I r
Re + jX e = U r
I r
±30%
−0.3 −0.2 −0.1 0.1 0.2 0.3
0.5
1
s
V r, I r[ p.u.] I r
V r
−200
−100
100
200
s
ϕR
I rV r
ϕr = V r − I r
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8/17/2019 DFIG Nusmir Mekić
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V s
I sRsI r
jX s R
r/s jX r
Re
s
jX e
s
jxµ
I µ
Z e
M m =
P emωs/p =
1
ωs/p ·
3I 3r (Rr + Re)
s =
1
ωs/p
3V 2s(Rs + Rr/s + Re/s)2 + (X s + X r + X e/s)2
Rr + Res
s pr = +
(Rr + Re)2 + X 2eR2s + (X s + X r)
2
M mpr = 1
2ωs/p ·
3V 2s
Rs + (X s+X r)X e
Rr+Re−
((X s + X r)2 + R2s) · (1 +
X 2e
(Rr+Re)2)
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8/17/2019 DFIG Nusmir Mekić
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π/2
ωt
uA
uB
uC
d
q
ωt
Ψ
ud = kd (ua cos(θ) + ub cos(θ − 2π/3) + uc cos(θ + 2π/3))
uq = kq (ua sin(θ) + ub sin(θ − 2π/3) + uc sin(θ + 2π/3))
u0 = k0 (ua + ub + uc)
θ = ωt−
Ψ
Ψ
kd, kq k0
2/3, 2/3 1/3
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S dq =
32S abc
(kd, kq, k0) = (
2/3 ,
2/3 ,
1/3 )
uduq
u0
=
2
3
cos(θ) cos(θ − 2π/3) cos(θ + 2π/3)sin(θ) sin(θ − 2π/3) sin(θ + 2π/3)
1/√ 2 1/
√ 2 1/
√ 2
uAuB
uC
uAuB
uC
=
2
3
cos(θ) sin(θ) 1/
√ 2
cos(θ − 2π/3) sin(θ − 2π/3) 1/√ 2
cos(θ + 2π/3) sin(θ + 2π/3) 1/√ 2
uduq
u0
uA = U m sin (ωt)
uB = U m sin (ωt − 2π/3)
uC = U m sin (ωt + 2π/3)
ud =
3
2 U m sin (ωt − θ)
uq =
3
2 U m cos (ωt − θ)
u0 = 0
θ = ωt − Ψ
ud =
3
2 U m sin Ψ
uq =
3
2 U m cos Ψ
id =
3
2 I m sin (Ψ− ϕ)
iq =
3
2 I m cos (Ψ− ϕ)
ϕ
P = udid + uqiq
Q = udiq − uqid
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8/17/2019 DFIG Nusmir Mekić
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90◦
vds = Rsids + φds
t − ωsφqs
vqs = Rsiqs + φqs
t
+ ωsφds
vdr = Rridr + φds
t − (ωs − ωm)φqs
vqr = Rriqr + φqs
t
+ (ωs − ωm)φds
φds = Lsids + Lµidr
φqs = Lsiqs + Lµiqr
φdr = Lridr + Lµids
φqr = Lriqr + Lµiqs
P s = vdsids + vqsiqs
Qs = vqsids − vdsiqsP r = vdridr + vqriqr
Qr = vqridr − vdriqr
M e = p(φdsiqs − φqsids)
V ds
Rs Ls
+ −
ωsφqsI ds +−
(ωs − ωm)φqrI dr
Rr Lr
V drLµ
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8/17/2019 DFIG Nusmir Mekić
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V qs
Rs Ls +−
ωsφdsI qs
+ −
(ωs − ωm)φdrI qr
Rr Lr
V qrLµ
90◦
180◦
vds = 0
vqs = V s = ωsφs
φds = LsI ds + LmI dr = φs
φqs = LsI qs + LmI qr = 0
φdr = LrI dr + LmI ds
φqr = LrI qr + LmI qs
V dr = Rridr +
Lr−
L2m
Ls idr
t −
sωs
Lr−
L2m
Ls
iqr
V qr = Rriqr +
Lr −
L2mLs
iqr
t
+ sωs
Lr −
L2mLs
iqr + sωs
LmV sωsLs
P = −V sLmLs
iqr
Q = V sφs
Ls−
V sLmLs
idr
M e = − pLmLs
iqrφs
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8/17/2019 DFIG Nusmir Mekić
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M t = 1
2
ρzR5πC p
λ3 ω2 = K λoptω
2
P = M ω
P = −V sLmLs
iqr
M e = − pLm
Ls
iqrφs
iqr
Q = V sφs
Ls−
V sLmLs
idr
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Qref
idr
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8/17/2019 DFIG Nusmir Mekić
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U DC
S 2
S 1
S 3
S 4
Lia
E
+ −U r
+
U r
Lia
E
++
V r = V re jθ
θ
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V r − E = jX rI a
I a = V r − E
jX r
= V re
jθ− E
jX r
E
V
jX I I
ϕ ϑE
V
jX I I ϕ ϑ
E
V jX I
I
ϕ ϑ
E
V jX I
I
ϕ
ϑ
−
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u(t)
ttON
T
γ = tON
T
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+
−
uref (t)
utr(t)
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8/17/2019 DFIG Nusmir Mekić
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R1S 1
T 1
+
−
ωt
u(ωt) U aU bU cU srU i
U a, U b, U c
U i U sr U i
U sr
γ
U i = U srγ
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2π/3
R2S 2T 2
+
−
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8/17/2019 DFIG Nusmir Mekić
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R1
S 1
T 1
AC/DC DC/AC LC filter
R2
S 2
T 2
ZU S
ωs±30%ωs
70%ωs
130%ωs
P r = (1 − s)P ob
±70%
P el = ±0.3P s
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50Hz
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