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1
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2
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.
T
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g
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I
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IJ
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Up
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6
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tu
r
b
in
e
co
n
tr
o
llin
g
.
I
n
th
is
s
y
s
tem
,
ea
ch
w
in
d
tu
r
b
in
e
is
eq
u
ip
p
ed
w
ith
an
en
er
g
y
s
to
r
ag
e
s
y
s
tem
w
h
ich
is
co
n
tr
o
llin
g
b
y
a
w
in
d
tu
r
b
in
e
in
itial
co
n
tr
o
ller
th
at
is
co
n
n
ec
ted
w
ith
a
w
in
d
f
ar
m
s
ec
o
n
d
ar
y
co
n
tr
o
ller
.
I
n
R
ef
.
[
7
]
,
a
co
n
tr
o
l
s
y
s
tem
h
as
b
ee
n
p
r
o
p
o
s
ed
,
u
s
in
g
a
f
ly
w
h
ee
l
an
d
f
u
zz
y
lo
g
ic
co
n
tr
o
ller
to
r
ed
u
ce
o
s
ci
llatio
n
s
o
f
o
u
tp
u
t
p
o
w
er
o
f
d
o
u
b
ly
-
f
ed
w
in
d
tu
r
b
in
e
an
d
also
r
eg
u
latin
g
th
e
tu
r
b
in
e
o
u
tp
u
t
v
o
ltag
e.
I
n
R
ef
.
[
8
]
an
d
[
9
]
,
u
s
in
g
v
ec
to
r
co
n
tr
o
l
m
eth
o
d
s
alo
n
g
th
e
s
tato
r
f
lu
x
,
th
e
o
u
tp
u
t
ac
tiv
e
an
d
r
ea
ctiv
e
p
o
w
er
ar
e
co
n
tr
o
lled
b
y
P
I
co
n
tr
o
ller
in
SISO
m
o
d
e,
s
u
ch
th
at
th
e
v
o
ltag
e
m
ag
n
itu
d
e
o
f
d
an
d
q
ax
es
ar
e
co
n
s
id
er
ed
as
s
y
s
tem
in
p
u
t
r
ef
er
en
ce
v
o
ltag
e.
A
cc
o
r
d
in
g
to
th
e
tab
le
o
f
r
eg
u
lated
p
o
w
er
f
o
r
ex
tr
ac
tin
g
w
in
d
m
ax
im
u
m
p
o
w
er
in
d
if
f
er
en
t
s
p
ee
d
s
,
th
e
m
ax
im
u
m
p
o
w
er
in
ea
ch
m
o
m
en
t
is
tr
ac
ed
.
T
h
is
m
eth
o
d
h
as
r
elativ
ely
lo
w
r
esis
tan
ce
,
co
n
s
id
er
in
g
th
e
r
elativ
ely
w
id
e
v
ar
iatio
n
s
in
in
ter
n
al
ch
ar
ac
ter
is
tics
o
f
g
en
er
ato
r
,
s
u
ch
as
v
ar
iatio
n
s
in
r
esis
tan
ce
v
alu
e
an
d
r
o
to
r
an
d
s
tato
r
in
d
u
ctan
ce
.
I
n
R
ef
.
[
1
0
]
,
a
m
eth
o
d
h
as
b
ee
n
p
r
o
p
o
s
ed
to
m
ain
tain
h
ig
h
ef
f
icien
cy
in
p
o
w
er
co
n
v
er
to
r
,
o
v
er
th
e
w
h
o
le
r
an
g
e
o
f
lo
ad
s
an
d
in
cir
cu
its
.
T
h
e
p
r
o
p
o
s
ed
m
eth
o
d
b
asically
in
cr
ea
s
es
th
e
co
n
v
er
to
r
ef
f
icien
cy
in
lig
h
t
-
lo
ad
.
T
h
is
ca
n
b
e
p
o
s
s
ib
le
b
y
m
in
im
izin
g
th
e
s
w
itch
in
g
lo
s
s
,
s
em
ico
n
d
u
cto
r
s
w
itch
es
lo
s
s
an
d
also
th
e
m
ag
n
etic
c
o
m
p
o
n
en
t
o
f
co
r
e
lo
s
s
.
T
h
is
lo
s
s
is
m
in
im
ized
b
y
co
n
tr
o
llin
g
th
e
tu
r
n
in
g
o
n
an
d
tu
r
n
in
g
o
f
f
in
p
o
w
er
co
n
v
er
to
r
s
,
s
u
ch
th
at
if
th
e
co
n
v
er
to
r
is
o
n
,
it
w
o
r
k
s
at
m
ax
im
u
m
lev
el
o
f
ef
f
icien
cy
.
I
n
R
ef
.
[
1
1
]
,
a
m
eth
o
d
h
as
b
ee
n
p
r
o
p
o
s
ed
f
o
r
ef
f
icien
cy
im
p
r
o
v
em
en
t
o
f
lig
h
t
-
lo
ad
in
s
y
n
ch
r
o
n
o
u
s
b
u
ck
co
n
v
er
to
r
b
y
lo
s
s
r
ed
u
ctio
n
in
g
ate
tr
ig
g
er
.
A
ls
o
,
a
n
o
v
el
tech
n
iq
u
e
f
o
r
g
ate
tr
ig
g
in
g
h
as
b
ee
n
p
r
o
p
o
s
ed
,
s
u
ch
th
at
th
e
g
ate
v
o
ltag
e
is
o
s
cillatin
g
d
y
n
am
ically
,
alo
n
g
w
ith
th
e
lo
ad
cu
r
r
en
t,
in
a
w
ay
th
at
th
e
g
ate
tr
ig
g
er
lo
s
s
is
ex
ch
an
g
ed
f
o
r
co
n
d
u
ctio
n
lo
s
s
.
T
h
e
co
n
d
u
ctio
n
lo
s
s
is
p
r
o
p
o
r
tio
n
al
w
ith
s
q
u
ar
e
cu
r
r
en
t.
T
h
e
ex
is
ten
ce
o
f
an
o
p
tim
u
m
g
ate
o
s
cillato
r
s
h
o
w
s
th
at
in
lig
h
t
-
lo
ad
s
,
th
e
m
ag
n
itu
d
e
o
f
lo
s
s
is
s
m
aller
.
I
n
R
ef
.
[
1
2
]
an
d
[
1
3
]
,
u
s
in
g
to
r
q
u
e
co
n
tr
o
l
m
eth
o
d
,
th
e
s
tato
r
ac
tiv
e
an
d
r
ea
ctiv
e
p
o
w
er
m
ag
n
itu
d
e
ar
e
ca
lcu
lated
an
d
th
en
,
b
ased
o
n
th
e
h
y
s
ter
esis
r
eg
u
lato
r
s
,
th
e
s
tato
r
v
o
ltag
e
v
ec
to
r
s
ar
e
co
n
tr
o
lled
.
T
h
e
b
asic
p
r
o
b
lem
o
f
th
is
m
eth
o
d
is
th
e
v
ar
iatio
n
o
f
th
e
s
w
itch
in
g
f
r
eq
u
en
cy
o
f
th
e
r
o
to
r
s
id
e
p
o
w
er
co
n
v
er
to
r
,
w
h
ich
ch
an
g
es
w
ith
th
e
o
u
tp
u
t
ac
tiv
e
an
d
r
ea
ctiv
e
p
o
w
er
v
ar
iatio
n
s
.
T
h
er
ef
o
r
e,
th
e
p
o
w
er
co
n
v
er
to
r
an
d
h
ar
m
o
n
ic
f
ilter
s
co
n
s
tr
u
ctio
n
w
ill
b
ec
o
m
e
co
m
p
licated
an
d
ex
p
en
s
iv
e.
I
n
d
ee
d
,
th
e
v
ec
to
r
co
n
tr
o
l
is
co
n
tr
o
llin
g
th
e
f
lu
x
m
ak
er
an
d
to
r
q
u
e
m
ak
er
co
m
p
o
n
en
ts
o
f
s
tato
r
cu
r
r
en
t
in
an
ar
b
itra
r
y
r
ef
er
en
ce
f
r
am
e.
T
h
ese
co
m
p
o
n
en
ts
ar
e
co
n
tr
o
lled
in
an
ar
b
itra
r
y
f
r
am
e
w
ith
m
ag
n
itu
d
e,
p
h
ase
an
d
f
r
eq
u
en
cy
r
eg
u
latio
n
o
f
s
u
p
p
ly
v
o
ltag
e.
Sin
ce
th
e
f
lu
x
v
ar
iatio
n
w
ith
cu
r
r
en
t
co
n
tr
o
l
is
v
er
y
s
lo
w
,
th
e
f
lu
x
m
ak
er
co
m
p
o
n
en
t
o
f
cu
r
r
en
t
s
h
o
u
ld
b
e
k
ep
t
co
n
s
tan
t
f
o
r
h
av
in
g
f
ast
s
p
ee
d
an
d
f
ast
to
r
q
u
e
r
esp
o
n
s
e.
On
th
e
o
th
er
h
an
d
,
it
is
n
ec
ess
ar
y
to
co
n
tr
o
l
th
e
f
lu
x
in
o
r
d
er
to
av
o
id
m
ag
n
etic
s
atu
r
atio
n
an
d
also
Evaluation Warning : The document was created with Spire.PDF for Python.
IJ
A
P
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SS
N:
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8792
I
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r
o
vin
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h
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a
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fficien
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b
y
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a
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I
n
tera
ctio
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E
ffect
in
…
(
S
ey
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s
ma
ee
l Mir
h
o
s
s
ein
i Ni
r
i
)
159
f
lu
x
m
itig
atio
n
in
o
r
d
er
to
r
ed
u
cin
g
th
e
co
r
e
lo
s
s
in
lig
h
t
-
lo
ad
.
T
h
e
r
o
to
r
f
lu
x
o
r
ien
tatio
n
m
eth
o
d
is
s
en
s
itiv
e
w
ith
r
esp
ec
t
to
th
e
m
o
to
r
p
ar
am
eter
s
an
d
h
as
a
co
m
p
licated
d
ec
o
u
p
le
cir
cu
it,
b
u
t
th
e
s
tato
r
f
lu
x
o
r
ien
tatio
n
m
eth
o
d
h
as
less
s
en
s
itiv
ity
w
ith
r
esp
ec
t
to
m
o
to
r
p
ar
am
eter
s
[
1
4
]
.
T
h
er
ef
o
r
e,
th
e
s
tato
r
f
lu
x
o
r
ien
tatio
n
m
eth
o
d
h
as
b
ee
n
u
s
ed
.
T
h
er
e
ar
e
p
r
o
ce
s
s
es
th
at
h
a
v
e
lo
ts
o
f
co
n
tr
o
l
v
ar
iab
les
an
d
m
an
y
m
ea
s
u
r
ed
v
ar
iab
les.
Su
ch
s
y
s
te
m
s
ar
e
ca
lled
m
u
lti
-
i
n
p
u
t
m
u
lti
-
o
u
tp
u
t
(
MI
MO
)
s
y
s
te
m
s
.
B
ec
a
u
s
e
o
f
t
h
e
i
n
ter
ac
tio
n
b
et
w
ee
n
th
e
s
ig
n
al
s
,
it
m
a
y
b
e
v
er
y
d
i
f
f
icu
l
t
to
c
o
n
tr
o
l
s
u
ch
s
y
s
te
m
s
b
y
a
co
m
b
i
n
atio
n
o
f
s
i
m
p
le
co
n
tr
o
ller
s
.
A
s
i
m
p
le
w
a
y
to
co
n
tr
o
l
s
u
c
h
s
y
s
te
m
s
is
to
u
s
e
t
w
o
s
i
n
g
le
-
lo
o
p
co
n
tr
o
ller
s
,
ea
ch
f
o
r
o
n
e
lo
o
p
.
T
o
d
o
th
is
,
it
h
as
to
b
e
d
ec
id
ed
h
o
w
to
co
n
n
ec
t t
h
ese
co
n
tr
o
ller
s
in
t
h
e
f
ir
s
t p
lace
.
Fi
g
u
r
e
2
s
h
o
w
s
a
p
r
o
ce
d
u
r
e
w
it
h
t
w
o
-
i
n
p
u
t a
n
d
t
w
o
-
o
u
tp
u
t [
1
5
]
.
Fig
u
r
e
2
.
B
lo
ck
d
iag
r
a
m
o
f
a
s
y
s
te
m
w
it
h
t
w
o
-
in
p
u
t a
n
d
t
w
o
-
o
u
tp
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t
I
n
t
h
is
p
ap
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,
ex
tr
ac
tio
n
o
f
m
a
x
i
m
u
m
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w
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o
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D
FIG
v
ia
e
v
alu
ati
n
g
t
h
e
s
tate
-
s
p
ac
e
eq
u
a
ti
o
n
s
i
n
th
e
ca
s
e
o
f
clo
s
e
d
-
lo
o
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n
tr
o
l,
f
o
r
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e
p
u
r
p
o
s
e
o
f
l
ig
h
t
-
l
o
ad
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f
icie
n
c
y
i
m
p
r
o
v
e
m
e
n
t
h
as
b
ee
n
s
tu
d
ied
.
C
o
n
s
id
er
in
g
t
h
e
s
tate
-
s
p
ac
e
e
q
u
atio
n
s
o
f
D
FIG
as
a
MI
MO
s
y
s
te
m
,
an
d
p
r
o
p
o
s
in
g
th
e
d
e
ce
n
tr
alize
d
co
n
tr
o
l
m
et
h
o
d
f
o
r
it,
th
e
o
b
tain
i
n
g
r
esu
lt
s
co
m
p
ar
ed
w
i
th
th
e
SISO
s
y
s
te
m
r
es
u
lt
s
p
er
t
h
e
v
al
u
es
u
p
to
0
.
2
ti
m
es
o
f
th
e
r
ated
lo
ad
.
T
h
er
ef
o
r
e,
in
t
h
e
MI
MO
m
o
d
elin
g
,
t
h
e
lig
h
t
-
lo
ad
ef
f
icie
n
c
y
o
f
DFI
G,
w
h
en
it
is
co
n
n
ec
ted
to
n
et
w
o
r
k
,
ca
n
b
e
i
n
cr
ea
s
ed
b
y
eli
m
i
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g
th
e
i
n
ter
f
er
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ce
e
f
f
ec
t a
n
d
w
it
h
t
h
e
h
elp
o
f
t
h
e
p
r
o
p
er
c
o
n
tr
o
l
ler
.
2.
T
H
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W
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URB
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DF
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e
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in
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IJ
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2
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IJ
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I
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tr
o
lli
n
g
dr
i
an
d
qr
i
v
alu
e
s
,
s
u
c
h
t
h
a
t
th
e
ac
tiv
e
a
n
d
r
ea
ctiv
e
p
o
w
er
s
r
ea
c
h
to
th
e
d
esire
d
v
alu
e
s
.
T
h
e
in
p
u
t
r
e
f
er
en
ce
cu
r
r
en
t
s
ca
n
b
e
o
b
tain
ed
th
r
o
u
g
h
th
e
ac
ti
v
e
an
d
r
ea
ctiv
e
p
o
w
er
s
.
4.
ACTI
VE
AN
D
RAC
T
I
V
E
P
O
WE
R
CO
N
T
RO
L
T
o
co
n
tr
o
l
th
e
ac
tiv
e
an
d
r
ea
ctiv
e
p
o
w
er
o
f
w
i
n
d
tu
r
b
in
e
eq
u
ip
p
ed
w
ith
D
FIG
,
d
if
f
er
e
n
t
s
c
h
e
m
e
s
h
av
e
b
ee
n
p
r
o
p
o
s
ed
.
I
n
th
ese
s
ch
e
m
e
s
,
d
ec
o
u
p
led
v
ar
iab
le
an
d
SISO
m
o
d
elin
g
h
a
v
e
b
ee
n
p
er
f
o
r
m
ed
.
I
n
th
i
s
p
ap
er
,
in
th
e
f
ir
s
t
s
tep
,
it
h
as
b
ee
n
tr
ied
to
co
n
tr
o
l
th
e
s
y
s
te
m
p
r
o
p
er
l
y
u
s
i
n
g
P
I
D
co
n
tr
o
ller
.
I
t
s
h
o
u
ld
b
e
m
e
n
tio
n
ed
th
at,
b
e
ca
u
s
e
i
t
is
a
t
w
o
v
ar
iab
le
s
y
s
te
m
,
it
is
b
etter
to
ev
al
u
ate
t
h
e
i
n
p
u
t
a
n
d
o
u
tp
u
t
2
/
,
/
(
.
)
/
(
)
,
/
/
,
/
,
2,
s
m
s
l
m
s
r
m
m
s
r
r
m
r
r
r
r
s
s
s
R
s
r
s
s
r
p
g
k
L
L
k
L
L
L
k
L
L
L
k
L
L
L
R
L
R
fn
Evaluation Warning : The document was created with Spire.PDF for Python.
IJ
A
P
E
I
SS
N:
2252
-
8792
I
mp
r
o
vin
g
Lig
h
t
-
Lo
a
d
E
fficien
cy
b
y
E
limin
a
tin
g
I
n
tera
ctio
n
E
ffect
in
…
(
S
ey
ed
E
s
ma
ee
l Mir
h
o
s
s
ein
i Ni
r
i
)
163
ef
f
ec
ts
,
f
o
r
b
etter
co
n
tr
o
llin
g
th
e
s
y
s
te
m
.
T
h
e
co
n
tr
o
ller
d
esig
n
in
th
is
s
y
s
te
m
is
p
er
f
o
r
m
ed
u
s
in
g
th
e
d
ec
en
tr
alize
d
co
n
tr
o
l
m
et
h
o
d
.
4
.
1
.
T
he
pro
po
s
e
d Co
ntr
o
l Sy
s
t
em
I
n
t
h
i
s
s
ec
tio
n
,
th
e
ac
ti
v
e
a
n
d
r
ea
ctiv
e
co
n
tr
o
l
s
y
s
te
m
o
f
w
i
n
d
t
u
r
b
in
e
h
a
v
e
b
ee
n
in
tr
o
d
u
ce
d
.
T
h
e
co
n
tr
o
l s
y
s
te
m
s
h
o
w
ed
i
n
Fi
g
u
r
e
6
h
as b
ee
n
co
n
s
id
er
ed
as r
o
to
r
s
id
e
co
n
tr
o
l sy
s
te
m
co
n
v
er
to
r
.
Fig
u
r
e
6
.
B
lo
ck
d
iag
r
a
m
o
f
r
o
to
r
s
id
e
co
n
tr
o
l sy
s
te
m
co
n
v
er
to
r
Fo
r
th
is
p
u
r
p
o
s
e,
th
e
tr
ac
i
n
g
t
ab
le
h
as
b
ee
n
u
s
ed
to
d
eter
m
i
n
e
th
e
s
p
ee
d
w
h
ich
t
h
e
g
en
er
a
ted
p
o
w
er
w
il
l
b
e
p
r
o
p
o
r
tio
n
al
to
t
h
e
m
a
x
i
m
u
m
lo
ad
.
T
h
e
tr
ac
in
g
tab
le
in
p
u
t
i
s
t
h
e
g
e
n
er
ato
r
s
p
ee
d
,
an
d
it
s
o
u
tp
u
t
is
th
e
o
p
tim
u
m
ac
ti
v
e
p
o
w
er
t
h
at
h
a
s
b
ee
n
co
n
s
id
er
ed
as
t
h
e
r
e
f
er
en
ce
p
o
w
er
o
f
t
h
e
ac
ti
v
e
p
o
wer
co
n
tr
o
l
s
y
s
te
m
o
f
th
e
co
n
v
er
to
r
.
T
h
ese
ch
ar
ac
t
er
is
tics
h
av
e
b
ee
n
o
b
tain
ed
b
ased
o
n
th
e
ae
r
o
d
y
n
a
m
ic
i
n
f
o
r
m
atio
n
o
f
w
i
n
d
tu
r
b
in
e
r
o
to
r
an
d
th
e
p
o
in
ts
w
h
ich
ar
e
p
r
o
p
o
r
tio
n
al
to
th
e
tu
r
b
in
e
m
ax
i
m
u
m
p
o
w
er
.
T
h
en
,
th
e
d
esire
d
q
r
e
f
i
h
as b
ee
n
o
b
tain
ed
b
y
co
n
tr
o
ller
an
d
it is
co
m
p
ar
ed
w
it
h
t
h
e
o
u
tp
u
t c
u
r
r
en
t
v
alu
e.
5.
SI
M
UL
AT
I
O
N
R
E
S
UL
T
S
I
n
th
is
s
ec
tio
n
,
t
h
e
s
i
m
u
la
tio
n
r
esu
lts
ar
e
r
ep
r
esen
ted
in
o
r
d
er
to
v
er
if
y
th
e
e
f
f
ec
tiv
e
p
er
f
o
r
m
an
ce
o
f
th
e
p
r
o
p
o
s
ed
c
o
n
tr
o
l
m
et
h
o
d
.
T
h
e
s
i
m
u
la
tio
n
s
ar
e
ca
r
r
ied
o
u
t
b
ased
o
n
th
e
ch
ar
ac
ter
is
tic
s
o
f
a
ty
p
ical
DFI
G,
w
h
ic
h
ar
e
s
h
o
w
n
in
tab
le
2
[
1
9
]
.
A
ls
o
,
th
e
r
o
to
r
s
id
e
co
n
v
er
t
o
r
w
a
s
m
o
d
eled
b
y
t
h
e
p
r
o
p
o
s
ed
co
n
tr
o
l sy
s
te
m
T
ab
le
2
.
T
h
e
Dete
r
m
i
n
ed
v
al
u
es f
o
r
th
e
p
ar
a
m
eter
s
o
f
th
e
s
i
m
u
lated
s
y
s
te
m
P
a
r
a
me
t
e
r
C
o
n
si
d
e
r
e
d
V
a
l
u
e
nom
P
2
M
W
nom
v
6
9
0
v
nom
f
5
0
H
z
s
R
1
0
.
3
mΩ
r
R
8
.
2
8
mΩ
s
L
0
.
2
8
0
1
mH
r
L
0
.
1
1
7
7
mH
m
L
2
6
.
9
6
mH
Ω
g
1
9
5
0
r
p
m
p
n
2
5
.
1
.
T
he
T
ra
cing
Resul
t
s
o
f
t
he
M
a
x
i
m
u
m
E
x
t
ra
ct
a
ble P
o
w
er
f
ro
m
Sy
s
t
e
m
I
n
Fi
g
u
r
e
7
,
t
h
e
m
ax
i
m
u
m
e
x
tr
ac
tab
le
p
o
w
er
h
as
b
ee
n
s
h
o
w
n
b
y
r
ed
d
iag
r
a
m
,
w
h
ic
h
h
as
b
ee
n
o
b
tain
ed
p
er
d
if
f
er
en
t
w
i
n
d
s
p
ee
d
s
.
T
h
e
ex
tr
ac
ted
p
o
w
er
,
w
h
ich
h
a
s
b
ee
n
s
h
o
w
n
b
y
b
lu
e
d
i
ag
r
a
m
,
co
u
ld
tr
ac
e
th
e
m
a
x
i
m
u
m
r
e
f
er
en
ce
p
o
w
er
w
it
h
m
in
i
m
u
m
r
ip
p
le
.
Evaluation Warning : The document was created with Spire.PDF for Python.
I
SS
N
:
2
2
5
2
-
8792
IJ
A
P
E
Vo
l.
3
,
No
.
3
,
Dece
m
b
er
201
4
:
1
5
7
–
1
6
5
164
Fig
u
r
e
7
.
a.
T
h
e
r
ef
er
en
ce
p
o
w
er
tr
ac
in
g
d
iag
r
a
m
t
h
e
o
f
co
n
tr
o
l s
y
s
te
m
Fig
u
r
e
7
.
b
.
R
esize
o
f
th
e
r
e
f
er
en
ce
p
o
w
er
tr
ac
in
g
d
iag
r
a
m
t
h
e
o
f
co
n
tr
o
l s
y
s
te
m
5
.
2
.
T
he
E
f
f
iciency
Re
s
ults O
bta
i
ned in L
ig
ht
-
L
o
a
ds
I
n
th
is
s
ec
tio
n
,
t
h
e
p
r
o
p
o
s
ed
co
n
tr
o
l
s
y
s
te
m
i
n
MI
MO
m
o
d
e
p
er
0
.
0
1
,
0
.
0
2
5
,
0
.
0
5
,
0
.
1
,
0
.
2
ti
m
es
o
f
r
ated
lo
ad
,
w
h
ic
h
h
av
e
b
ee
n
c
o
n
s
id
er
ed
as
li
g
h
t
-
lo
ad
s
,
h
as
b
ee
n
s
i
m
u
lated
a
n
d
th
e
o
b
tain
e
d
r
esu
lts
h
a
v
e
b
ee
n
co
m
p
ar
ed
w
it
h
th
e
r
es
u
lt
s
o
b
tain
ed
b
y
th
e
co
n
tr
o
l s
y
s
te
m
in
SISO
m
o
d
e
,
as it h
a
s
b
ee
n
s
h
o
w
n
i
n
Fi
g
u
r
e
8
.
Fig
u
r
e
8
.
T
h
e
o
u
tp
u
t p
o
w
er
ef
f
icie
n
c
y
d
ia
g
r
a
m
p
er
lig
h
t
-
lo
a
d
s
6.
CO
NCLU
SI
O
N
I
n
th
is
p
ap
er
,
a
n
o
v
el
m
eth
o
d
h
as
b
ee
n
p
r
o
p
o
s
ed
f
o
r
ef
f
icie
n
c
y
i
m
p
r
o
v
e
m
e
n
t
i
n
lig
h
t
-
lo
a
d
s
.
I
n
th
is
s
y
s
te
m
,
t
h
e
o
p
ti
m
u
m
p
o
w
er
v
alu
e
o
f
t
h
e
co
n
tr
o
ller
r
ef
er
en
c
e
o
f
tu
r
b
in
e
h
as
b
ee
n
o
b
tain
ed
u
s
i
n
g
d
ec
e
n
tr
alize
d
co
n
tr
o
ller
to
in
cr
ea
s
e
th
e
s
y
s
te
m
ef
f
ic
ien
c
y
.
T
h
is
h
a
s
b
ee
n
d
o
n
e
u
s
in
g
t
h
e
tr
ac
in
g
tab
le,
wh
ich
is
o
b
tain
ed
v
ia
th
e
w
i
n
d
tu
r
b
in
e
tech
n
ical
c
h
ar
ac
ter
is
tics
.
I
n
t
h
e
s
i
m
u
latio
n
o
f
th
e
p
r
o
p
o
s
ed
m
e
th
o
d
,
it
h
as
b
ee
n
s
h
o
w
n
t
h
at
th
e
p
r
o
p
o
s
ed
co
n
tr
o
l
m
o
d
el
h
as
b
ee
n
i
m
p
r
o
v
ed
th
e
q
u
ali
t
y
o
f
t
h
e
r
ea
ctiv
e
p
o
w
er
.
Mo
r
eo
v
er
,
th
e
m
o
r
e
th
e
ap
p
lied
lo
ad
g
ettin
g
a
w
a
y
f
r
o
m
th
e
r
ated
lo
ad
,
th
e
m
o
r
e
th
e
ef
f
icien
c
y
w
il
l in
cr
ea
s
e
.
RE
F
E
R
E
NC
E
S
[1
]
Oa
n
a
Be
n
iu
g
a
,
"
Ra
zv
a
n
Ben
i
u
g
a
,
Pa
u
l
Bi
c
lea
n
u
,
An
a
Nicu
t
a
,
S
i
lviu
Ur
sa
c
h
e
.
.
,
W
in
d
T
u
r
b
in
e
Cro
w
b
a
r
Relia
b
il
i
ty
Rela
ted
o
n
e
lec
tric
Ch
a
rg
e
Acc
u
mu
la
ti
o
n
/
Disc
h
a
rg
e
"
,
I
n
tern
a
ti
o
n
a
l
Co
n
f
e
re
n
c
e
a
n
d
Ex
p
o
siti
o
n
o
n
El
e
c
tri
c
a
l
a
n
d
P
o
w
e
r
En
g
in
e
e
rin
g
(E
P
E)
2
0
12,
[2
]
A
li
re
z
a
Na
z
a
ri
a
n
d
Ho
ss
e
in
He
y
d
a
ri,
"
A
No
v
e
l
M
o
d
e
l
-
Ba
se
d
P
re
d
ictiv
e
Dire
c
t
P
o
w
e
r
Co
n
tro
l
o
f
Do
u
b
ly
-
F
e
d
In
d
u
c
ti
o
n
G
e
n
e
ra
to
r"
,
In
tern
a
ti
o
n
a
l
Jo
u
rn
a
l
o
f
Co
m
p
u
ter an
d
El
e
c
tri
c
a
l
En
g
in
e
e
rin
g
,
V
o
l
.
4
,
No
.
4
,
2
0
1
2
[3
]
Yo
u
se
f
i
-
Talo
u
k
i.
A
,
G
h
o
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tri
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.
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to
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ly
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s"
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rg
y
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v
o
l.
3
5
,
p
p
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1
6
6
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–
1
6
7
0
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2
0
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Evaluation Warning : The document was created with Spire.PDF for Python.
IJ
A
P
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I
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N:
2252
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8792
I
mp
r
o
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g
Lig
h
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fficien
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ffect
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165
[5
]
Ha
n
se
n
,
L
.
H.,
L
.
H
e
ll
e
,
F
.
Blaa
b
jerg
,
E.
Rit
c
h
ie,
S
.
M
u
n
k
-
Nie
lse
n
,
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Bin
d
n
e
r,
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S
o
re
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se
n
,
a
n
d
B.
Ba
k
-
Je
n
se
n
,
"
Co
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a
l
s
u
rv
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o
f
g
e
n
e
ra
to
rs
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d
p
o
w
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lec
tro
n
ics
f
o
r
w
in
d
tu
r
b
in
e
s"
,
Ris
Na
ti
o
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a
l
L
a
b
o
ra
t
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ry
,
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sk
il
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e
,
De
n
m
a
rk
,
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e
c
h
.
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p
,
2
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.
[6
]
L
i
y
a
n
Qu
a
n
d
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e
i
Qia
o
,
"
Co
n
sta
n
t
P
o
w
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r
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tro
l
o
f
DFIG
W
in
d
T
u
rb
in
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s
W
it
h
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p
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rc
a
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it
o
r
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n
e
rg
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S
to
r
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g
e
"
,
IEE
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T
ra
n
sa
c
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In
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stry
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l.
4
7
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.
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,
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0
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1
[7
]
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il
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rb
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o
tf
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ic su
p
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[8
]
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.
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p
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.
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ra
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.
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o
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rm
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2
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0
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n
g
,
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.
M
.
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2
5
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p
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1
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.
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.
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re
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ra
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rg
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rsio
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p
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p
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9
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a
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4
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n
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.
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,
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Driv
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y
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re
ss
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.
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5
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m
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g
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lu
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,
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ID
Co
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ll
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rs T
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n
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6
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Ra
h
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n
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ian
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M
.
,
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ficie
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m
e
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w
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d
tu
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in
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h
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ly
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p
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t"
,
IET
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n
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l.
4
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No
.
3
,
p
p
.
242
-
2
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2
,
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0
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.
[1
7
]
W
a
ris,
T
,
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C.
V
.
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riab
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p
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F
re
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l
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in
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ly
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e
d
In
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ra
to
r
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p
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ialists Co
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e
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,
p
p
.
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7
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8
–
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3
4
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2
0
0
8
.
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8
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th
i
M
.
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a
n
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n
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n
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3
1
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u
a
l
C
o
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re
n
c
e
o
f
IEE
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ra
n
s.
o
n
In
d
u
str
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tro
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o
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p
p
.
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N
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v
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2
0
0
5
.
[1
9
]
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ww
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d
Zafa
r
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M
a
n
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l
G
á
lv
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z
Ca
rril
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o
h
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n
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se
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k
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ich
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n
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e
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m
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sp
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ly
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se
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s
y
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m
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Un
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v
e
rsité
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ib
re
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Bru
x
e
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s (UL
B),
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ss
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lg
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2
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ro
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Evaluation Warning : The document was created with Spire.PDF for Python.