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er
m
a
n
e
n
t
m
a
g
n
e
t
its
el
f
w
h
ic
h
eli
m
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ates
th
e
f
ie
ld
co
ils
,
s
lip
r
i
n
g
s
a
n
d
b
r
u
s
h
e
s
.
T
h
e
m
aj
o
r
d
is
ad
v
an
ta
g
e
i
s
th
at
t
h
e
P
er
m
a
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en
t
m
ag
n
et
s
ar
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co
s
tl
y
w
h
ich
r
es
t
r
icts
th
e
ec
o
n
o
m
ic
r
ati
n
g
o
f
t
h
e
m
ac
h
i
n
e.
I
t
o
f
f
er
s
b
etter
p
er
f
o
r
m
an
ce
d
u
e
to
h
ig
h
er
ef
f
icie
n
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y
a
n
d
les
s
m
ain
te
n
an
ce
s
in
ce
it
d
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es
n
o
t
h
av
e
r
o
to
r
cu
r
r
en
t
an
d
ca
n
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e
u
s
ed
w
it
h
o
u
t
a
g
ea
r
b
o
x
,
w
h
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h
also
i
m
p
l
ies a
r
ed
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ctio
n
o
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h
e
w
eig
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t o
f
th
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ac
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2
.
2
.
Wind
T
ur
bin
e
M
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T
h
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w
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r
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i
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el
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s
ig
n
ed
in
M
A
T
L
A
B
’
1
2
.
I
t h
as
th
r
ee
in
p
u
ts
1.
Gen
er
ato
r
s
p
ee
d
is
n
o
th
i
n
g
b
u
t
th
e
r
o
to
r
tip
s
p
ee
d
in
p
er
u
n
it o
f
th
e
g
en
er
ato
r
b
ase
s
p
ee
d
.
2.
B
lad
e
P
itch
An
g
le
in
d
eg
r
ee
s
w
e
ca
n
g
et
th
e
m
ax
i
m
u
m
P
er
f
o
r
m
a
n
ce
C
o
ef
f
icie
n
t
C
p
w
h
e
n
th
is
an
g
le
is
ze
r
o
.
3.
W
in
d
Sp
ee
d
in
m
/
s
.
T
h
e
m
ec
h
a
n
ical
p
o
w
er
o
u
tp
u
t
is
th
e
p
r
o
d
u
ct
o
f
P
er
f
o
r
m
an
c
e
C
o
ef
f
icien
t
an
d
cu
b
e
o
f
w
i
n
d
s
p
ee
d
in
p
er
u
n
it [
5
]
.
Fro
m
t
h
is
t
h
e
m
ec
h
an
ica
l to
r
q
u
e
o
u
tp
u
t i
s
o
b
tain
ed
.
W
in
d
T
u
r
b
in
e
Mo
d
el
as sh
o
w
n
in
F
ig
u
r
e
2
.
Fig
u
r
e
2
.
W
in
d
T
u
r
b
in
e
Mo
d
e
l.
Evaluation Warning : The document was created with Spire.PDF for Python.
I
SS
N
:
2088
-
8
694
IJ
PEDS
Vo
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7
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3
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tem
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2
0
1
6
:
9
9
6
–
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0
0
3
998
2
.
3
.
T
w
o
m
a
s
s
driv
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ra
in
T
h
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T
w
o
m
as
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d
r
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ain
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o
d
el
i
m
p
le
m
e
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ted
in
SIM
U
L
I
NK.
T
h
is
is
tu
r
b
in
e
a
n
d
s
h
a
f
t c
o
u
p
lin
g
s
y
s
te
m
.
I
t i
s
s
u
itab
le
f
o
r
tr
an
s
i
en
t stab
ili
t
y
a
n
al
y
s
i
s
[
4
]
,
[
5
]
.
T
w
o
m
a
s
s
d
r
iv
e
tr
ai
n
as s
h
o
wn
in
Fig
u
r
e
3
.
Fig
u
r
e
3
.
T
w
o
m
a
s
s
d
r
iv
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tr
ai
n
3.
ST
A
T
I
C
SYNCH
RO
NO
US
CO
M
P
E
NSAT
O
R
T
h
e
Static
Sy
n
c
h
r
o
n
o
u
s
C
o
m
p
e
n
s
ato
r
(
ST
A
T
C
OM
)
ca
n
p
r
o
v
id
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v
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ltag
e
s
u
p
p
o
r
t
to
th
e
s
y
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te
m
a
s
p
er
th
e
r
eq
u
ir
e
m
e
n
t
le
v
el.
T
h
e
Fig
u
r
e
4
s
h
o
w
s
Static
S
y
n
c
h
r
o
n
o
u
s
C
o
m
p
e
n
s
ato
r
i
n
w
h
i
ch
th
e
e
x
c
h
an
g
e
o
f
r
ea
ctiv
e
p
o
w
er
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et
w
ee
n
th
e
c
o
n
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er
ter
an
d
t
h
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ac
s
y
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te
m
c
an
b
e
co
n
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o
lled
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y
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ar
y
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g
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h
e
a
m
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o
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h
e
3
-
p
h
ase
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u
tp
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t
v
o
ltag
e,
E
s
,
o
f
th
e
co
n
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er
ter
[
1
5
]
.
Fig
u
r
e
4
.
Static S
y
n
c
h
r
o
n
o
u
s
C
o
m
p
en
s
ato
r
W
h
er
e,
E
s
-
3
-
p
h
a
s
e
o
u
tp
u
t
v
o
ltag
e
an
d
E
t
-
u
ti
lit
y
b
u
s
v
o
lta
g
e.
a.
I
f
E
s
is
h
i
g
h
er
t
h
an
t
h
at
o
f
th
e
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tili
t
y
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u
s
v
o
lta
g
e,
E
t,
th
en
a
cu
r
r
en
t
fl
o
w
s
to
th
e
ac
s
y
s
te
m
th
r
o
u
g
h
th
e
r
ea
ctan
ce
f
r
o
m
t
h
e
co
n
v
er
ter
an
d
th
e
co
n
v
er
ter
g
e
n
er
ates c
ap
ac
itiv
e
-
r
ea
cti
v
e
p
o
w
er
f
o
r
th
e
ac
s
y
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te
m
.
b.
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f
th
e
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s
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les
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er
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a
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h
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u
r
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en
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o
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r
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m
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c
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to
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co
n
v
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ter
ab
s
o
r
b
s
in
d
u
cti
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e
-
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cti
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o
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er
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o
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y
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te
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.
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I
f
th
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eq
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al
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h
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o
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e
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ze
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in
w
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s
e
t
h
e
ST
A
T
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OM
is
s
aid
to
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e
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a
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o
ati
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s
tate
[
1
5
]
.
ST
A
T
C
OM
p
r
o
v
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g
e
s
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p
p
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atin
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s
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in
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w
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in
to
/
f
r
o
m
th
e
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y
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te
m
an
d
it
a
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o
h
a
s
r
ap
id
an
d
co
n
ti
n
u
o
u
s
r
esp
o
n
s
e
c
h
ar
ac
ter
is
tics
w
h
ic
h
p
r
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v
id
e
f
aster
an
d
s
m
o
o
th
er
d
y
n
a
m
ic
v
o
lta
g
e
co
n
tr
o
l
[
8
]
.
Evaluation Warning : The document was created with Spire.PDF for Python.
I
J
PEDS
I
SS
N:
2088
-
8
694
I
mp
r
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men
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f W
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o
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h
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s
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ee
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n
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e
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B
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L
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NK
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n
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e
n
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Fig
u
r
e5
.
Si
m
u
latio
n
m
o
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el
o
f
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MSG
T
h
e
w
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y
n
a
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p
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n
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p
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ase
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at
in
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ST
A
T
C
OM
an
d
a
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ad
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o
an
al
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ze
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i
s
,
a
th
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ee
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ase
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u
lt
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id
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to
o
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r
in
th
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tr
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2
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2
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d
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e
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p
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.
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at
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Fig
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6
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s
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ip
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r
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Fig
u
r
e6
.
Vab
an
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e
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t ST
A
T
C
OM
Fig
u
r
e
7
.
P
ac
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d
R
o
to
r
s
p
ee
d
w
it
h
o
u
t
ST
A
T
C
OM
Fig
u
r
e
8
.
T
e
an
d
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m
w
ith
o
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t
ST
A
T
C
OM
Evaluation Warning : The document was created with Spire.PDF for Python.
I
SS
N
:
2088
-
8
694
IJ
PEDS
Vo
l.
7
,
No
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3
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Sep
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ati
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en
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ated
b
y
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MSG
its
e
lf
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er
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n
ci
n
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th
e
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y
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te
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er
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4
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h
e
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it
h
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s
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g
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S
y
n
ch
r
o
n
o
u
s
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o
m
p
en
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ato
r
,
th
e
o
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tp
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t
v
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o
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y
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te
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h
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ee
n
r
e
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ild
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n
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e
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n
d
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o
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p
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d
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lt
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r
s
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d
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o
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s
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e.
An
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th
e
E
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ag
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d
m
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h
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n
ical
to
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q
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e
as
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s
th
e
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Evaluation Warning : The document was created with Spire.PDF for Python.
I
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I
SS
N:
2088
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8
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w
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s
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tech
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Sta
tic
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ch
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o
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s
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p
en
s
ato
r
(
ST
A
T
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)
f
o
r
W
in
d
f
ar
m
in
t
eg
r
atio
n
.
RE
F
E
R
E
NC
E
S
[1
]
P
a
n
u
Ku
rr
o
n
e
n
, “
P
M
G
v
s.
DFIG
–
th
e
b
ig
g
e
n
e
ra
to
r
tec
h
n
o
l
o
g
y
d
e
b
a
te”
,
2
0
1
4
.
[2
]
A
h
m
a
d
Zare
a
n
d
A
h
m
a
d
F
o
ro
u
z
a
n
tab
a
r
,
“
A
d
a
p
ti
v
e
ro
b
u
st
Co
n
t
ro
l
o
f
V
a
riab
le
S
p
e
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d
W
in
d
T
u
rb
in
e
g
e
n
e
ra
to
r”
Bu
ll
e
ti
n
o
f
El
e
c
trica
l
E
n
g
in
e
e
rin
g
a
n
d
I
n
fo
rm
a
t
ics
Vo
l.
4
,
N
o
.
3
,
p
p
.
1
9
6
~
2
0
3
,
S
e
p
tem
b
e
r
2
0
1
5
.
[3
]
M
in
g
Yin
,
G
e
n
g
y
in
,
M
in
g
Zh
o
u
a
n
d
Ch
e
n
g
y
o
n
g
Zh
a
o
,
“
M
o
d
e
li
n
g
o
f
th
e
w
in
d
tu
rb
i
n
e
w
it
h
a
p
e
r
m
a
n
e
n
t
m
a
g
n
e
t
s
y
n
c
h
ro
n
o
u
s g
e
n
e
ra
to
r
f
o
r
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n
teg
ra
ti
o
n
”
,
IEE
E
T
ra
n
sa
c
ti
o
n
s,
2
0
0
7
.
[4
]
N.
G
.
Hin
g
o
ra
n
i
a
n
d
L
.
Gy
u
g
y
i,
“
Un
d
e
rsta
n
d
i
n
g
F
A
C
T
S
:
Co
n
c
e
p
ts
a
n
d
T
e
c
h
n
o
lo
g
y
o
f
F
lex
ib
le
AC
T
ra
n
s
m
is
sio
n
S
y
st
e
m
s”
,
Ne
w
Y
o
rk
:
IEE
E
Pre
ss
,
2
0
0
0
.
[5
]
Ru
i
M
e
li
c
io
,
V
icto
r
M
.
F
.
M
e
n
d
e
s
a
n
d
Jo
ã
o
P
.
S
.
Ca
tala
,
“
W
in
d
T
u
rb
in
e
s
w
it
h
P
e
rm
a
n
e
n
t
M
a
g
n
e
t
S
y
n
c
h
ro
n
o
u
s
G
e
n
e
r
a
to
r
a
n
d
F
u
ll
-
P
o
w
e
r
Co
n
v
e
rters
:
M
o
d
e
ll
in
g
,
C
o
n
tr
o
l
a
n
d
S
imu
latio
n
”
,
In
tec
h
A
p
ril
2
0
1
1
.
[6
]
Ne
e
ra
j
P
a
re
ta
a
n
d
Na
v
e
e
n
S
e
n
,
“
M
o
d
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ll
in
g
a
n
d
S
im
u
la
ti
o
n
o
f
Per
ma
n
e
n
t
M
a
g
n
e
t
S
y
n
c
h
ro
n
o
u
s
M
o
t
o
e
r
Ba
se
d
W
in
d
En
e
rg
y
Co
n
v
e
rs
io
n
S
y
ste
m
”
,
Ju
ly
2
0
1
4
.
[7
]
M
e
ld
a
L
a
ti
f
,
M
u
m
u
h
M
u
h
a
ra
m
,
Yo
n
g
g
i
P
u
riza
a
n
d
G
u
sriwa
n
d
i,
“
S
im
p
le
Ha
w
t
P
ro
to
ty
p
e
Eff
icie
n
c
y
a
t
S
m
a
ll
S
c
a
l
e
W
in
d
S
p
e
e
d
”
T
EL
KOM
NIKA
,
V
o
l.
1
2
,
No
.
3
,
p
p
.
5
4
9
~
5
5
6
,
S
e
p
tem
b
e
r
2
0
1
4
.
[8
]
M
u
th
a
ra
sa
n
.
A
,
Ra
m
e
sh
k
u
m
a
r.
T
&
A
ji
th
a
.
A
,
“
W
in
d
En
e
rg
y
Co
n
v
e
rsio
n
Ba
se
d
On
M
a
tri
x
Co
n
v
e
rter“
in
In
ter
n
a
t
io
n
a
l
J
o
u
rn
a
l
o
f
P
o
we
r E
lec
tro
n
ics
a
n
d
Dr
ive
S
y
ste
ms
,
V
o
l
.
5
,
N
o
.
1
,
J
u
ly
2
0
1
4
,
p
p
.
1
1
9
~
1
2
8
.
[9
]
Zen
g
q
ian
g
M
i,
Yi
n
g
ji
n
Ch
e
n
,
L
iq
in
g
L
iu
,
Ya
n
g
Yu
,
“
Dy
n
a
mic
Per
fo
rm
a
n
c
e
Imp
ro
v
e
me
n
t
o
f
W
in
d
Fa
rm
wit
h
DFIG Usin
g
S
T
AT
COM
”,
i
n
I
n
tern
a
ti
o
n
a
l
Co
n
f
e
re
n
c
e
o
n
P
o
w
e
r
S
y
ste
m
T
e
c
h
n
o
lo
g
y
,
2
0
1
0
.
Evaluation Warning : The document was created with Spire.PDF for Python.
I
SS
N
:
2088
-
8
694
IJ
PEDS
Vo
l.
7
,
No
.
3
,
Sep
tem
b
er
2
0
1
6
:
9
9
6
–
1
0
0
3
1002
[1
0
]
X
ia,
Y.
,
A
h
m
e
d
,
K.H.
a
n
d
W
il
li
a
m
s,
B.
W
,
“
A
Ne
w
M
a
x
i
m
u
m
P
o
w
e
r
P
o
in
t
T
ra
c
k
in
g
T
e
c
h
n
iq
u
e
f
o
r
P
e
rm
a
n
e
n
t
M
a
g
n
e
t
S
y
n
c
h
ro
n
o
u
s
G
e
n
e
r
a
to
r
Ba
se
d
W
in
d
En
e
rg
y
Co
n
v
e
rsio
n
S
y
ste
m
”
,
IEE
E
T
ra
n
s
a
c
ti
o
n
s
o
n
Po
we
r
El
e
c
tro
n
ics
,
v
o
l.
2
6
,
n
o
.
1
2
,
De
c
2
0
1
1
.
[1
1
]
Bh
e
n
d
e
,
C.
N.,
M
ish
ra
,
S
.
a
n
d
M
a
ll
a
,
S
.
G
.
,
“
P
e
rm
a
n
e
n
t
m
a
g
n
e
t
s
y
n
c
h
ro
n
o
u
s g
e
n
e
ra
to
r
-
b
a
se
d
sta
n
d
a
l
o
n
e
w
in
d
e
n
e
rg
y
su
p
p
ly
sy
ste
m
”
,
IEE
E
T
ra
n
sa
c
ti
o
n
s o
n
S
u
sta
i
n
a
b
le E
n
e
rg
y
,
v
o
l.
2
,
n
o
.
4
,
p
p
.
3
6
1
-
3
7
3
,
Oc
t.
2
0
1
1
.
[1
2
]
P
riy
a
n
a
th
Da
s,
S
u
n
it
a
Ha
ld
e
r
n
e
e
De
y
,
A
b
h
ij
it
Ch
a
k
ra
b
a
rti
a
n
d
T
a
n
a
y
a
Da
tt
a
,
“
As
se
ss
m
e
n
t
o
f
V
o
l
tag
e
S
tab
il
it
y
Us
in
g
Ne
tw
o
rk
Eq
u
iv
a
len
t”
T
EL
KOM
NIKA
,
V
o
l
.
9
,
No
.
3
,
p
p
.
5
9
5
~
6
0
3
,
De
c
e
m
b
e
r
2
0
1
1
[1
3
]
S
.
M
.
W
o
o
,
D.W
.
Ka
n
g
,
W
.
C.
L
e
e
,
D.S
.
H
y
u
n
,
“
T
h
e
Distrib
u
ti
o
n
S
T
AT
COM
fo
r
Red
u
c
i
n
g
t
h
e
Ef
fec
t
o
f
Vo
lt
a
g
e
S
a
g
a
n
d
S
we
ll
”
,
2
7
th
A
n
n
u
a
l
Co
n
f
e
re
n
c
e
o
f
th
e
IEE
E
In
d
u
strial
E
lec
tro
n
ics
S
o
c
iety
(IE
CON
’0
1
),
Vo
l.
2
,
p
p
.
1
1
3
2
-
1
1
3
7
,
2
0
0
1
.
[1
4
]
M
a
rw
a
n
Ro
s
y
a
d
i,
S
.
M
.
M
u
y
e
e
n
,
Rio
n
T
a
k
a
h
a
sh
i
a
n
d
Ju
n
ji
T
a
m
u
ra
,
“
L
o
w
Vo
lt
a
g
e
Ri
d
e
-
T
h
r
o
u
g
h
Ca
p
a
b
il
it
y
Imp
ro
v
e
me
n
t
o
f
W
i
n
d
Fa
rm
s u
si
n
g
Va
ri
a
b
le S
p
e
e
d
Per
ma
n
e
n
t
M
a
g
n
e
t
W
in
d
Ge
n
e
ra
to
r
”.
[1
5
]
A
.
D.
Ha
n
se
n
,
G
.
M
ich
a
lk
e
,
“
M
o
d
e
li
n
g
a
n
d
Co
n
tr
o
l
o
f
V
a
riab
le
S
p
e
e
d
M
u
lt
i
-
P
o
le
P
e
rm
a
n
e
n
t
M
a
g
n
e
t
S
y
n
c
h
ro
n
o
u
s
G
e
n
e
r
a
to
r
W
in
d
T
u
rb
i
n
e
”
,
W
in
d
En
e
rg
y
,
V
o
l
.
1
1
,
n
o
.
5
,
p
p
.
5
3
7
-
5
5
4
,
2
0
0
8
.
[1
6
]
J.L
.
Ro
d
rı´
g
u
e
z
-
Am
e
n
e
d
o
a
,
S
.
A
rn
a
lt
e
sa
,
M
.
A
.
Ro
d
rı´
g
u
e
z
b
,
“
Op
e
ra
ti
o
n
a
n
d
Co
o
rd
i
n
a
ted
C
o
n
t
ro
l
o
f
F
ix
e
d
a
n
d
V
a
riab
le S
p
e
e
d
W
in
d
F
a
rm
s”
,
Re
n
e
wa
b
le E
n
e
rg
y
,
Vo
l.
3
3
,
p
p
.
4
0
6
–
4
1
4
,
2
0
0
8
.
[1
7
]
S
.
B.
P
a
p
a
e
f
th
im
io
u
n
,
S
.
A
.
P
a
p
a
th
a
n
a
ss
io
u
,
“
S
imu
la
ti
o
n
a
n
d
Co
n
tro
l
o
f
V
a
ria
b
le
S
p
e
e
d
W
in
d
T
u
r
b
in
e
W
it
h
S
y
n
c
h
ro
n
o
u
s
Ge
n
e
ra
to
r
”
,
in
CD
Re
c
.
X
V
II
In
t.
C
o
n
f
.
El
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