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n
d
p
o
w
er
s
y
s
te
m
a
r
e
p
r
esen
ted
in
[
1
4
]
.
I
n
th
is
p
ap
er
,
v
o
ltag
e
co
n
tr
o
l
tech
n
iq
u
e
is
u
s
ed
in
b
o
th
g
r
id
-
s
id
e
as
w
ell
as
m
ac
h
in
e
-
s
id
e
co
n
v
er
ter
s
to
an
al
y
ze
t
h
e
p
er
f
o
r
m
a
n
ce
o
f
th
e
DFI
G
s
y
s
te
m
u
n
d
er
g
r
id
v
o
ltag
e
f
l
u
ct
u
atio
n
a
n
d
th
e
ex
p
er
im
e
n
tal
r
es
u
lt
s
ar
e
o
b
t
ain
ed
u
s
i
n
g
R
ea
l
T
im
e
D
ig
i
tal
Si
m
u
la
to
r
[
1
5
]
w
h
er
e
R
T
-
L
A
B
is
u
s
ed
.
I
n
R
T
-
L
A
B
h
ar
d
w
ar
e
s
y
n
ch
r
o
n
izatio
n
m
o
d
e
is
s
ele
cted
to
s
y
n
ch
r
o
n
ize
t
h
e
s
o
f
t
war
e
en
v
ir
o
n
m
e
n
t
w
i
th
th
e
h
ar
d
w
ar
e
en
v
ir
o
n
m
e
n
t
v
ia
an
a
n
alo
g
p
er
ip
h
er
al
OP
5
2
5
1
.
2.
M
O
DE
L
I
N
G
O
F
DF
I
G
T
h
e
s
ch
e
m
atic
d
iag
r
a
m
o
f
th
e
o
v
er
all
s
y
s
te
m
i
s
s
h
o
w
n
in
F
ig
u
r
e
1
.
A
1
0
h
p
w
o
u
n
d
r
o
to
r
in
d
u
ct
io
n
m
ac
h
in
e
is
m
o
d
eled
in
s
y
n
c
h
r
o
n
o
u
s
r
ef
er
e
n
ce
f
r
a
m
e.
T
w
o
v
o
ltag
e
f
ed
P
W
M
co
n
v
e
r
ter
s
ar
e
u
s
ed
.
O
n
e
co
n
v
er
ter
is
u
s
ed
in
th
e
g
r
id
s
id
e
an
d
o
th
er
is
in
th
e
r
o
to
r
s
id
e.
T
h
e
o
b
j
ec
ti
v
e
o
f
g
r
id
s
id
e
co
n
v
er
ter
is
to
m
ai
n
tai
n
d
c
-
li
n
k
v
o
lta
g
e
co
n
s
tan
t
an
d
th
e
r
o
to
r
s
id
e
co
n
v
er
ter
r
eg
u
lates
t
h
e
s
p
ee
d
,
th
u
s
m
ak
in
g
th
e
s
y
s
te
m
s
u
itab
le
f
o
r
v
ar
iab
le
s
p
ee
d
ap
p
licatio
n
s
y
s
te
m
.
E
q
u
atio
n
s
(
1
)
-
(
4
)
an
d
(
8
)
-
(
9
)
d
escr
ib
e
th
e
co
m
p
lete
m
ac
h
i
n
e
m
o
d
el
i
n
s
ta
te
-
s
p
ac
e
f
o
r
m
w
h
e
r
e
Ψ
qs
, Ψ
ds
, Ψ
qr
, Ψ
dr
ar
e
th
e
s
ta
te
v
ar
iab
les.
qm
qs
ls
X
s
R
ds
b
e
qs
v
b
dt
qs
d
(
1
)
dm
ds
ls
X
s
R
qs
b
e
ds
v
b
dt
ds
d
(
2
)
qm
qr
lr
X
R
dr
b
r
e
qr
v
b
dt
qr
d
r
(
3
)
dm
dr
lr
X
R
qr
b
r
e
dr
v
b
dt
dr
d
r
(
4
)
W
h
er
e
qr
lr
ml
qs
ls
ml
qm
X
X
X
X
(
5
)
dr
lr
ml
ds
ls
ml
dm
X
X
X
X
(
6
)
ls
m
lr
m
lr
ls
lr
ls
m
ml
X
X
X
X
X
X
X
X
X
X
(
7
)
T
h
e
d
ev
elo
p
m
e
n
t o
f
to
r
q
u
e
b
y
th
e
in
ter
ac
tio
n
o
f
air
g
ap
f
lu
x
an
d
r
o
to
r
m
m
f
i
s
ex
p
r
es
s
ed
in
eq
n
.
(
8
)
in
ter
m
s
o
f
d
-
q
-
co
m
p
o
n
e
n
t
s
o
f
s
ta
to
r
f
l
u
x
a
n
d
cu
r
r
en
t.
ds
qs
qs
ds
b
e
i
i
p
T
1
2
2
3
(
8
)
T
h
e
s
p
ee
d
ω
r
in
th
e
ab
o
v
e
eq
u
atio
n
s
ca
n
n
o
t b
e
tr
ea
ted
as c
o
n
s
tan
t.
I
t c
an
b
e
r
elate
d
to
th
e
t
o
r
q
u
e
as
dt
d
J
p
T
dt
d
J
T
T
r
m
m
m
e
2
(
9
)
T
h
e
s
y
s
te
m
s
et
u
p
is
d
escr
ib
ed
in
th
e
n
e
x
t sectio
n
.
Evaluation Warning : The document was created with Spire.PDF for Python.
I
SS
N
:
2
0
8
8
-
8
694
IJ
PEDS
Vo
l.
7
,
No
.
4
,
Dec
em
b
er
2
0
1
6
:
1
3
3
7
–
1
3
4
7
1339
Fig
u
r
e
1
.
Sch
e
m
atic
d
iag
r
a
m
o
f
w
in
d
t
u
r
b
in
e
d
r
iv
e
n
DFI
G
s
y
s
te
m
w
it
h
p
r
o
p
o
s
ed
g
r
id
s
id
e
an
d
r
o
to
r
s
id
e
co
n
v
er
ter
v
ec
to
r
co
n
tr
o
l
3.
RE
A
L
T
I
M
E
SE
T
UP
T
h
is
s
i
m
u
lato
r
is
d
ev
elo
p
ed
w
ith
t
h
e
ai
m
o
f
m
ee
ti
n
g
th
e
tr
an
s
ie
n
t
s
i
m
u
latio
n
n
ee
d
s
o
f
elec
tr
o
m
ec
h
a
n
ical
d
r
iv
e
s
a
n
d
elec
tr
ic
s
y
s
te
m
s
w
h
ile
s
o
lv
in
g
th
e
li
m
ita
tio
n
s
o
f
tr
ad
itio
n
a
l r
ea
l
-
ti
m
e
s
i
m
u
lato
r
s
.
I
t
is
b
ased
o
n
a
ce
n
tr
al
p
r
in
ci
p
le:
th
e
u
s
e
o
f
w
id
el
y
a
v
ailab
le,
u
s
er
-
f
r
ie
n
d
l
y
,
h
ig
h
l
y
co
m
p
etitiv
e
co
m
m
er
cial
p
r
o
d
u
cts
(
P
C
p
latf
o
r
m
,
Si
m
u
li
n
k
™
)
.
T
h
e
r
ea
l
-
ti
m
e
s
i
m
u
la
to
r
co
n
s
i
s
ts
o
f
t
w
o
m
ai
n
to
o
ls
:
a
r
ea
l
-
ti
m
e
d
is
tr
ib
u
ted
s
i
m
u
latio
n
p
ac
k
ag
e
(
R
T
-
L
A
B
)
f
o
r
t
h
e
ex
ec
u
tio
n
o
f
Si
m
u
li
n
k
b
lo
ck
d
ia
g
r
a
m
s
o
n
a
P
C
-
clu
s
ter
,
an
d
alg
o
r
it
h
m
ic
to
o
lb
o
x
es
d
esig
n
ed
f
o
r
th
e
f
i
x
ed
-
t
i
m
e
-
s
t
e
p
s
i
m
u
latio
n
o
f
s
ti
f
f
elec
tr
i
c
cir
cu
it
s
an
d
t
h
eir
co
n
tr
o
ller
s
.
R
ea
l
-
ti
m
e
s
i
m
u
la
t
io
n
an
d
Har
d
w
ar
e
-
In
-
th
e
-
L
o
o
p
(
HI
L
)
ap
p
licatio
n
s
ar
e
i
n
cr
e
asin
g
l
y
r
ec
o
g
n
ized
as e
s
s
e
n
tial to
o
ls
f
o
r
en
g
i
n
ee
r
i
n
g
d
esi
g
n
,
esp
ec
iall
y
in
p
o
w
er
elec
tr
o
n
ics an
d
elec
tr
ical
s
y
s
t
e
m
s
[
1
5
].
T
h
e
p
r
esen
t
r
ea
l
-
ti
m
e
s
i
m
u
la
t
o
r
is
b
ased
o
n
R
T
L
A
B
r
ea
l
-
ti
m
e,
d
is
tr
ib
u
ted
s
i
m
u
latio
n
p
la
tf
o
r
m
.
I
t
is
o
p
tim
ized
to
r
u
n
Si
m
u
li
n
k
in
r
ea
l
-
ti
m
e,
w
it
h
e
f
f
icie
n
t
f
i
x
e
d
-
s
tep
s
o
l
v
er
s
,
o
n
P
C
C
l
u
s
ter
.
B
ased
o
n
C
OT
S
n
o
n
-
p
r
o
p
r
ietar
y
P
C
co
m
p
o
n
e
n
ts
,
R
T
L
A
B
is
a
m
o
d
u
l
ar
r
ea
l
-
ti
m
e
s
i
m
u
la
tio
n
p
lat
f
o
r
m
,
f
o
r
th
e
a
u
to
m
atic
i
m
p
le
m
en
ta
tio
n
o
f
s
y
s
te
m
-
l
ev
el,
b
lo
ck
d
i
a
g
r
a
m
m
o
d
e
ls
,
o
n
s
ta
n
d
ar
d
P
C
‟
s
.
It
u
s
e
s
t
h
e
p
o
p
u
lar
MA
T
L
A
B
/S
i
m
u
li
n
k
as
a
f
r
o
n
t
-
en
d
f
o
r
ed
iti
n
g
an
d
v
ie
w
i
n
g
g
r
ap
h
ic
m
o
d
els
i
n
b
lo
c
k
-
d
i
ag
r
a
m
f
o
r
m
at.
T
h
e
b
lo
ck
d
iag
r
a
m
m
o
d
els
b
ec
o
m
e
t
h
e
s
o
u
r
ce
f
r
o
m
w
h
ich
c
o
d
e
ca
n
b
e
au
to
m
a
ticall
y
g
e
n
er
ated
,
m
a
n
ip
u
lated
an
d
d
o
w
n
lo
ad
ed
o
n
to
tar
g
et
p
r
o
ce
s
s
o
r
s
(
P
en
tiu
m
a
n
d
P
en
ti
u
m
-
co
m
p
a
tib
le)
f
o
r
r
ea
l
-
t
i
m
e
o
r
d
is
tr
ib
u
ted
s
i
m
u
lat
io
n
.
E
lectr
ic
an
d
p
o
w
er
elec
tr
o
n
ic
s
y
s
te
m
s
ar
e
cr
ea
ted
o
n
th
e
h
o
s
t p
er
s
o
n
al
co
m
p
u
ter
b
y
i
n
ter
co
n
n
ec
t
in
g
:
a.
E
lectr
ical
co
m
p
o
n
en
t
s
f
r
o
m
c
o
m
p
o
n
en
t
m
o
d
el
lib
r
ar
ies av
ai
lab
le
in
th
e
P
o
w
er
S
y
s
te
m
B
lo
ck
-
s
et
b.
C
o
n
tr
o
ller
co
m
p
o
n
en
t
s
an
d
o
th
er
co
m
p
o
n
e
n
t
s
f
r
o
m
Si
m
u
li
n
k
an
d
its
to
o
lb
o
x
es
th
at
ar
e
s
u
p
p
o
r
ted
b
y
R
ea
l
-
T
i
m
e
-
W
o
r
k
s
h
o
p
c.
I
/O
b
lo
ck
s
f
r
o
m
t
h
e
s
i
m
u
lato
r
I
/O
to
o
lb
o
x
es.
T
h
e
ea
s
y
-
to
-
u
s
e
d
r
ag
-
a
n
d
-
d
r
o
p
Si
m
u
li
n
k
i
n
ter
f
ac
e
i
s
u
s
ed
at
all
s
ta
g
es o
f
th
e
p
r
o
ce
s
s
.
T
h
ese
s
y
s
te
m
s
ar
e
t
h
en
s
i
m
u
lated
an
d
t
u
n
ed
o
f
f
-
l
in
e
in
th
e
M
A
T
L
A
B
/S
i
m
u
li
n
k
en
v
ir
o
n
m
en
t.
AR
T
E
MI
S
f
ix
ed
s
tep
s
o
lv
er
s
ar
e
u
s
ed
f
o
r
th
e
elec
tr
ic
p
ar
t
an
d
Si
m
u
li
n
k
n
ati
v
e
s
o
lv
er
s
f
o
r
th
e
co
n
tr
o
ller
an
d
o
th
er
b
lo
ck
-
d
iag
r
a
m
p
ar
ts
.
Fi
n
all
y
,
th
e
m
o
d
el
is
au
to
m
atica
ll
y
co
m
p
iled
an
d
lo
ad
ed
to
th
e
P
C
-
C
l
u
s
te
r
w
it
h
R
T
-
L
A
B
s
i
m
u
latio
n
i
n
t
er
f
ac
e.
T
h
e
s
i
m
u
lato
r
s
o
f
t
w
a
r
e
co
n
v
er
ts
Si
m
u
li
n
k
an
d
Si
m
P
o
w
er
S
y
s
te
m
s
n
o
n
-
r
ea
l
-
ti
m
e
m
o
d
els to
r
ea
l
-
t
i
m
e
s
i
m
u
latio
n
.
4.
G
RI
D
SI
D
E
CO
NV
E
R
T
E
R
CO
NT
RO
L
Gr
id
v
o
ltag
e
m
a
y
c
h
an
g
e
d
u
e
to
s
u
d
d
en
lo
ad
ch
an
g
e
o
r
w
i
n
d
s
p
ee
d
v
ar
iatio
n
in
w
ea
k
g
r
id
an
d
in
m
icr
o
-
g
r
id
.
I
f
th
e
g
r
id
v
o
lta
g
e
ch
a
n
g
e
s
,
t
h
e
v
o
lta
g
e
o
f
DF
I
G
s
tato
r
a
n
d
r
o
to
r
also
ch
a
n
g
e.
T
h
is
a
f
f
ec
t
s
t
h
e
Evaluation Warning : The document was created with Spire.PDF for Python.
I
J
PEDS
I
SS
N:
2
0
8
8
-
8
694
V
ec
to
r
C
o
n
tr
o
l R
ea
liz
a
tio
n
o
f
DF
I
G
Un
d
er Grid
A
b
n
o
r
ma
liti
es u
s
in
g
R
ea
l Time
Dig
ita
l
…
(K
.
B
.
Mo
h
a
n
ty
)
1340
DFI
G
p
er
f
o
r
m
an
ce
.
Sin
ce
t
h
e
co
n
v
er
ter
s
ar
e
co
n
n
ec
ted
b
ac
k
-
to
-
b
ac
k
,
th
e
s
a
m
e
e
f
f
ec
t
is
al
s
o
o
b
s
er
v
ed
ac
r
o
s
s
th
ese
t
w
o
co
n
v
er
ter
s
a
n
d
o
n
t
h
e
d
c
-
l
in
k
ca
p
ac
ito
r
as
w
ell.
Un
d
er
n
o
r
m
a
l
o
p
er
atin
g
co
n
d
i
tio
n
s
,
p
ea
k
v
a
lu
e
o
f
g
r
id
p
h
ase
v
o
ltag
e
(
v
abc
m
ax
)
is
tak
en
a
s
3
8
0
V
an
d
d
c
lin
k
v
o
l
tag
e
as
8
5
0
V.
T
h
e
m
a
x
i
m
u
m
v
alu
e
o
f
a
m
p
l
itu
d
e
m
o
d
u
latio
n
i
n
d
ex
o
f
g
r
id
s
id
e
co
n
v
er
ter
(
m
a1
)
i
s
s
et
at
0
.
8
9
,
f
o
r
lin
ea
r
m
o
d
u
lat
io
n
.
T
h
e
f
o
llo
w
i
n
g
r
elatio
n
b
et
w
ee
n
p
ea
k
g
r
id
p
h
ase
v
o
lta
g
e,
d
c
lin
k
v
o
lta
g
e
an
d
m
o
d
u
l
atio
n
in
d
e
x
h
o
ld
s
g
o
o
d
[
1
6
].
v
abc
m
ax
=
m
a1
v
dc
/2
T
h
e
n
ec
es
s
ar
y
co
n
tr
o
l
ac
tio
n
is
ad
o
p
ted
to
m
ai
n
tai
n
t
h
e
d
c
-
lin
k
v
o
lta
g
e
co
n
s
ta
n
t.
Gr
id
v
o
ltag
e
o
r
ien
ted
v
ec
to
r
co
n
tr
o
l
tech
n
i
q
u
e
is
u
s
ed
,
in
w
h
ic
h
th
e
r
ea
l
ax
is
o
f
t
h
e
g
r
id
v
o
ltag
e
v
ec
t
o
r
is
ch
o
s
en
as
th
e
d
-
ax
i
s
.
P
h
ase
L
o
ck
ed
L
o
o
p
b
lo
ck
is
u
s
ed
to
m
ea
s
u
r
e
t
h
e
s
y
s
te
m
f
r
eq
u
e
n
c
y
a
n
d
p
r
o
v
id
es
t
h
e
p
h
ase
a
n
g
le
θ
f
o
r
th
e
d
-
q
tr
an
s
f
o
r
m
atio
n
s
b
lo
ck
.
T
h
e
co
n
tr
o
l
s
ch
e
m
e
u
t
iliz
es
cu
r
r
en
t
co
n
tr
o
l
lo
o
p
s
f
o
r
i
d
an
d
i
q
w
ith
t
h
e
i
d
d
em
a
n
d
b
ein
g
d
er
iv
ed
f
r
o
m
th
e
d
c
-
lin
k
v
o
ltag
e
er
r
o
r
th
r
o
u
g
h
a
s
tan
d
ar
d
P
-
I
co
n
tr
o
ll
er
.
T
h
e
i
q
d
em
a
n
d
d
eter
m
in
e
s
t
h
e
d
is
p
lace
m
en
t
f
ac
to
r
o
n
t
h
e
g
r
id
s
id
e
o
f
t
h
e
ch
o
k
e.
T
h
e
ac
ti
v
e
p
o
w
er
an
d
r
ea
ctiv
e
p
o
w
er
is
co
n
tr
o
lled
in
d
ep
en
d
en
tl
y
u
s
i
n
g
d
-
q
co
m
p
o
n
e
n
t o
f
t
h
e
cu
r
r
en
t g
o
v
er
n
ed
b
y
(
1
0
)
an
d
(
1
1
)
.
)
(
2
3
q
q
d
d
i
v
i
v
P
(
1
0
)
)
(
2
3
d
q
q
d
i
v
i
v
Q
(
1
1
)
T
h
e
r
ef
er
en
ce
v
o
ltag
e
v
ec
to
r
s
f
o
r
th
e
g
r
id
s
id
e
co
n
v
er
ter
s
ar
e
f
o
u
n
d
f
r
o
m
(
1
2
)
an
d
(
1
3
)
.
d
d
e
q
d
d
v
R
i
L
i
v
v
'
*
*
*
(
1
2
)
q
q
e
d
q
q
v
R
i
L
i
v
v
'
*
*
*
(
1
3
)
W
h
er
e,
v
‟
d
a
n
d
v
‟
q
ar
e
f
o
u
n
d
f
r
o
m
t
h
e
cu
r
r
e
n
t e
r
r
o
r
s
th
r
o
u
g
h
s
tan
d
ar
d
P
-
I
co
n
tr
o
ller
s
.
5.
RO
T
O
R
SI
D
E
CO
NV
E
R
T
E
R
CO
NT
RO
L
R
o
to
r
p
h
ases
ar
e
s
tar
co
n
n
ec
ted
.
R
o
to
r
lin
e
v
o
ltag
e
(
v
abcr
m
ax
)
is
r
elate
d
to
d
c
lin
k
v
o
ltag
e
an
d
m
o
d
u
latio
n
in
d
e
x
o
f
r
o
to
r
s
id
e
co
n
v
er
ter
(
m
a2
)
t
h
r
o
u
g
h
t
h
e
f
o
llo
w
i
n
g
ex
p
r
ess
io
n
[
1
6
].
v
abcr
m
ax
=
√
3
.
m
a2
. v
dc
/2
W
ith
s
ta
to
r
p
ea
k
v
o
lta
g
e
o
f
3
8
0
V,
r
o
to
r
p
ea
k
lin
e
v
o
lta
g
e
co
m
e
s
o
u
t
as
5
5
0
V.
T
o
r
eg
u
l
ate
d
c
lin
k
v
o
ltag
e
at
8
5
0
V,
r
o
to
r
s
id
e
co
n
v
er
ter
m
o
d
u
latio
n
i
n
d
ex
h
as
to
b
e
0
.
7
5
,
in
d
icatin
g
l
in
e
ar
m
o
d
u
latio
n
.
T
h
e
n
ec
es
s
ar
y
co
n
tr
o
l
ac
tio
n
is
ad
o
p
ted
f
o
r
th
e
r
o
to
r
s
id
e
co
n
v
e
r
ter
to
m
a
in
ta
in
th
e
s
p
ee
d
o
f
th
e
DFI
G
co
n
s
ta
n
t
an
d
also
to
s
u
p
p
ly
t
h
e
r
ea
ctiv
e
p
o
w
er
r
eq
u
ir
ed
b
y
th
e
m
ac
h
in
e
lo
ca
ll
y
,
ir
r
esp
ec
tiv
e
o
f
th
e
w
i
n
d
s
p
ee
d
.
T
h
e
u
n
it
v
ec
to
r
r
eq
u
ir
e
m
e
n
t
f
o
r
th
e
d
-
q
tr
an
s
f
o
r
m
atio
n
is
f
o
u
n
d
b
y
u
s
i
n
g
g
r
id
v
o
lta
g
e
o
r
ien
tati
o
n
w
h
er
e
t
h
e
r
ea
l a
x
is
o
f
t
h
e
g
r
id
v
o
lta
g
e
v
e
cto
r
is
ch
o
s
en
a
s
th
e
d
-
a
x
i
s
as
u
s
ed
in
ca
s
e
o
f
g
r
id
s
id
e
co
n
v
e
r
ter
co
n
tr
o
l.
T
h
e
r
ef
er
en
ce
v
o
ltag
e
v
ec
to
r
s
f
o
r
m
ac
h
in
e
s
id
e
co
n
v
er
ter
ar
e
b
ein
g
d
er
iv
ed
u
s
in
g
(
1
4
)
an
d
(
1
5
)
.
qs
m
r
qr
r
r
dr
d
d
i
L
L
i
R
i
v
v
'
*
(
1
4
)
ds
m
r
dr
r
r
qr
q
q
i
L
L
i
R
i
v
v
'
*
(
1
5
)
W
h
er
e,
v
‟
d
an
d
v
‟
q
ar
e
f
o
u
n
d
f
r
o
m
t
h
e
c
u
r
r
en
t
er
r
o
r
s
t
h
r
o
u
g
h
s
ta
n
d
ar
d
P
-
I
co
n
tr
o
ller
s
.
T
h
e
r
ef
er
en
ce
c
u
r
r
en
t
i*
dr
ca
n
b
e
f
o
u
n
d
eit
h
er
f
r
o
m
t
h
e
r
ef
er
e
n
ce
to
r
q
u
e
g
i
v
e
n
b
y
(
1
6
)
o
r
f
o
r
m
th
e
s
p
ee
d
er
r
o
r
s
th
r
o
u
g
h
s
tan
d
ar
d
P
-
I
co
n
tr
o
ller
s
.
Si
m
ilar
l
y
,
i
*
qr
is
f
o
u
n
d
f
r
o
m
t
h
e
r
ea
cti
v
e
p
o
w
er
er
r
o
r
s
.
T
h
e
r
ea
ctiv
e
p
o
w
er
a
n
d
s
p
ee
d
is
co
n
tr
o
lled
u
s
i
n
g
th
e
c
u
r
r
en
t c
o
n
tr
o
l lo
o
p
s
.
m
s
s
e
dr
L
L
T
i
*
*
(
1
6
)
Evaluation Warning : The document was created with Spire.PDF for Python.
I
SS
N
:
2
0
8
8
-
8
694
IJ
PEDS
Vo
l.
7
,
No
.
4
,
Dec
em
b
er
2
0
1
6
:
1
3
3
7
–
1
3
4
7
1341
W
h
er
e,
r
l
o
s
s
m
e
c
h
e
P
P
T
*
(
1
7
)
)
(
C
u
s
C
u
r
l
o
ss
P
P
L
o
s
s
e
s
E
l
e
c
t
r
i
c
a
l
L
o
s
s
e
s
M
e
c
h
a
n
i
c
a
l
P
(
1
8
)
6.
SI
M
UL
AT
I
O
N
R
E
S
UL
T
S
AND
DIS
CUSS
I
O
NS
T
h
r
o
u
g
h
e
x
p
er
i
m
e
n
t
s
,
p
ar
a
m
eter
s
ar
e
d
eter
m
i
n
ed
f
o
r
th
e
1
0
h
p
d
o
u
b
l
y
f
ed
i
n
d
u
ct
io
n
g
e
n
er
ato
r
(
DFI
G)
an
d
co
n
v
er
ter
s
y
s
te
m
in
th
e
lab
o
r
ato
r
y
.
T
h
e
s
p
ec
if
icatio
n
s
a
n
d
p
ar
am
eter
s
v
al
u
e
s
ar
e
g
iv
e
n
in
t
h
e
T
ab
le
1
.
T
h
is
s
y
s
te
m
is
s
i
m
u
lated
w
it
h
M
A
T
L
A
B
/SIM
U
L
I
NK
en
v
ir
o
n
m
e
n
t
b
y
tak
i
n
g
d
if
f
er
e
n
t
ca
s
e
s
in
to
ac
co
u
n
t.
A
t
ti
m
e
t
=
0
,
w
in
d
tu
r
b
in
e
s
tar
ts
d
r
iv
i
n
g
t
h
e
DFI
G,
an
d
t
w
o
co
n
v
er
ter
s
ar
e
s
witch
ed
o
n
.
Star
ti
n
g
tr
an
s
ie
n
t
r
esp
o
n
s
e
o
f
s
tato
r
v
o
ltag
es
(
v
abc
)
,
s
ta
to
r
cu
r
r
en
t
s
(
I
abc
)
,
d
c
lin
k
v
o
ltag
e
(
v
d
c)
,
ac
tiv
e
p
o
w
er
(
P
)
,
r
ea
ctiv
e
p
o
w
er
(
Q)
,
an
d
r
o
to
r
s
p
ee
d
(
ω
r
)
ar
e
ca
p
tu
r
ed
f
r
o
m
t
i
m
e
t
=
0
to
0
.
2
s
.
T
h
e
s
tar
tin
g
tr
an
s
ien
t
s
s
ettle
to
s
tead
y
s
tate
v
al
u
es
w
ell
w
i
th
i
n
i
n
itial
0
.
2
s
.
A
t
t
i
m
e
t
=
0
.
2
s
,
g
r
id
v
o
lta
g
e
i
s
c
h
an
g
ed
.
I
n
th
e
f
ir
s
t
ca
s
e,
g
r
id
v
o
ltag
e
is
r
ed
u
ce
d
to
5
0
%
at
t
=
0
.
2
s
.
T
h
e
s
tar
tin
g
s
i
m
u
la
ti
o
n
r
esp
o
n
s
e
s
an
d
s
i
m
u
latio
n
r
esp
o
n
s
es
w
it
h
t
h
is
v
o
ltag
e
s
ag
ar
e
s
h
o
w
n
i
n
Fi
g
u
r
e
2
.
I
n
t
h
e
s
ec
o
n
d
ca
s
e,
g
r
id
v
o
lta
g
e
is
i
n
cr
ea
s
ed
to
1
2
0
%
at
t
=
0
.
2
s
.
T
h
e
s
i
m
u
latio
n
r
esp
o
n
s
es
a
r
e
s
h
o
w
n
i
n
Fi
g
u
r
e
3
.
C
o
r
r
esp
o
n
d
in
g
to
th
e
s
e
t
w
o
ca
s
es
tr
an
s
ien
t
r
esp
o
n
s
es
ar
e
tak
en
f
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f
A
d
v
a
n
ce
d
C
o
m
p
u
ti
n
g
,
T
h
ir
u
v
an
a
n
t
h
ap
u
r
a
m
to
w
ar
d
s
th
e
r
esear
c
h
p
r
o
j
ec
t
“
Dev
el
o
p
m
e
n
t
o
f
a
h
ig
h
p
er
f
o
r
m
a
n
ce
s
en
s
o
r
less
f
ield
-
o
r
ien
t
ed
d
o
u
b
le
o
u
tp
u
t
in
d
u
c
tio
n
g
e
n
er
ato
r
s
y
s
te
m
f
o
r
w
i
n
d
en
er
g
y
h
ar
n
e
s
s
i
n
g
”
at
Natio
n
al
I
n
s
t
itu
te
o
f
T
ec
h
n
o
lo
g
y
R
o
u
r
k
ela,
u
n
d
er
NaM
P
E
T
s
ch
e
m
e
to
d
ev
elo
p
th
e
ex
p
er
i
m
en
ta
l set
u
p
an
d
d
o
th
is
r
esear
c
h
.
RE
F
E
R
E
NC
E
S
[1
]
R.
P
e
n
a
,
J.C.
Clare
,
a
n
d
G
.
M
.
A
s
h
e
r,
“
Do
u
b
ly
f
e
d
in
d
u
c
ti
o
n
g
e
n
e
ra
to
r
u
sin
g
b
a
c
k
-
to
-
b
a
c
k
P
W
M
c
o
n
v
e
rters
a
n
d
it
s
a
p
p
li
c
a
ti
o
n
t
o
v
a
riab
le
-
sp
e
e
d
w
in
d
-
e
n
e
rg
y
g
e
n
e
ra
ti
o
n
”
,
IEE
P
r
o
c
.
p
t.
B,
v
o
l
.
1
4
3
,
n
o
.
3
,
M
a
y
1
9
9
6
,
p
p
.
2
3
1
-
2
4
1
.
[2
]
S
.
R.
Jo
n
e
s,
a
n
d
R.
Jo
n
e
s,
“
A
c
o
n
tro
l
stra
teg
y
f
o
r
sin
u
so
i
d
a
l
su
p
p
ly
sid
e
c
o
n
v
e
rto
r
s”
,
IEE
Co
ll
o
q
u
i
u
m
o
n
De
v
e
lo
p
m
e
n
ts
in
Re
a
l
T
ime
Co
n
t
ro
l
f
o
r
In
d
u
c
ti
o
n
M
o
t
o
r
Driv
e
s,
F
e
b
ru
a
ry
2
,
1
9
9
3
,
L
o
n
d
o
n
,
p
p
.
5
/1
-
5
/9
.
[3
]
O.S
.
Eb
ra
h
im
,
P
.
K.
Ja
in
,
a
n
d
G
.
Nish
it
h
,
“
Ne
w
c
o
n
tro
l
sc
h
e
m
e
f
o
r
th
e
w
in
d
-
d
riv
e
n
d
o
u
b
ly
fe
d
in
d
u
c
ti
o
n
g
e
n
e
ra
to
r
u
n
d
e
r
n
o
rm
a
l
a
n
d
a
b
n
o
rm
a
l
g
rid
v
o
lt
a
g
e
c
o
n
d
it
io
n
s”
,
Jo
u
r
n
a
l
o
f
P
o
w
e
r
El
e
c
tro
n
ics
,
v
o
l.
8
,
n
o
.
1
,
Ja
n
u
a
ry
2
0
0
8
,
p
p
.
1
0
-
2
2
.
[4
]
O.
A
b
d
e
l
-
Ba
q
i,
a
n
d
A
.
Na
siri,
“
A
d
y
n
a
m
ic
L
V
RT
so
lu
ti
o
n
f
o
r
d
o
u
b
ly
-
fe
d
in
d
u
c
ti
o
n
g
e
n
e
ra
to
rs”
,
IEE
E
T
ra
n
s.
P
o
w
e
r
El
e
c
tro
n
ics
,
v
o
l.
2
5
,
n
o
.
1
,
2
0
1
0
,
p
p
.
1
9
3
-
1
9
6
.
[5
]
Y.
Zh
o
u
,
P
.
Ba
u
e
r,
J.A
.
F
e
rre
ira,
a
n
d
J.
P
ierik
,
“
Op
e
ra
ti
o
n
o
f
g
rid
-
c
o
n
n
e
c
ted
DFIG
u
n
d
e
r
u
n
b
a
lan
c
e
d
g
rid
v
o
lt
a
g
e
c
o
n
d
i
ti
o
n
”
,
IEE
E
T
ra
n
s.
En
e
rg
y
Co
n
v
e
rsio
n
,
v
o
l.
2
4
,
n
o
.
1
,
2
0
0
9
,
p
p
.
2
4
0
-
2
4
6
.
[6
]
P
.
N.
E
n
jeti,
a
n
d
S
.
A
.
Ch
o
u
d
h
u
r
y
,
“
A
n
e
w
c
o
n
tro
l
stra
teg
y
to
im
p
ro
v
e
th
e
p
e
rf
o
r
m
a
n
c
e
o
f
a
P
W
M
A
C
to
DC
c
o
n
v
e
rter
u
n
d
e
r
u
n
b
a
lan
c
e
d
o
p
e
r
a
ti
n
g
c
o
n
d
it
io
n
s”
,
IEE
E
T
ra
n
s.
P
o
w
e
r
El
e
c
tro
n
ics
,
v
o
l.
8
,
n
o
.
4
,
Oc
t.
1
9
9
3
,
p
p
.
493
–
5
0
0
.
[7
]
F
.
K.A
.
L
i
m
a
,
A
.
L
u
n
a
,
a
n
d
P
.
Ro
d
rig
u
e
z
,
E.
H.
W
a
tan
a
b
e
,
F
.
Blaa
b
jerg
,
“
Ro
to
r
v
o
lt
a
g
e
d
y
n
a
m
ic
s
in
t
h
e
d
o
u
b
ly
f
e
d
in
d
u
c
ti
o
n
g
e
n
e
ra
to
r
d
u
ri
n
g
g
rid
f
a
u
lt
s”
,
IEE
E
T
ra
n
s.
o
n
P
o
w
e
r
El
e
c
tro
n
ics
.
v
o
l.
2
5
,
n
o
.
1
,
Ja
n
,
2
0
1
0
,
p
p
.
1
1
8
-
1
3
0
.
[8
]
P
.
Zh
o
u
,
Y.
He
,
D.
S
u
n
,
“
Im
p
ro
v
e
d
d
irec
t
p
o
w
e
r
c
o
n
tro
l
o
f
a
DFIG
-
b
a
se
d
w
in
d
t
u
r
b
in
e
d
u
ri
n
g
n
e
t
w
o
rk
u
n
b
a
lan
c
e
”
,
IEE
E
T
ra
n
s.
o
n
P
o
w
e
r
El
e
c
tro
n
ics
,
v
o
l.
2
4
,
n
o
.
1
1
,
N
o
v
.
2
0
0
9
,
p
p
.
2
4
6
5
-
2
4
7
4
.
[9
]
S
.
A
lep
u
z
,
S
.
B
u
sq
u
e
ts
-
M
o
n
g
e
,
J.
Bo
rd
o
n
a
u
,
J.A
.
M
a
rti
n
e
z
-
V
e
la
sc
o
,
C.
A
.
S
il
v
a
,
J.
P
o
n
tt
,
J.
R
o
d
r
ig
u
e
z
,
“
Co
n
tro
l
stra
teg
ies
b
a
s
e
d
o
n
sy
m
m
e
tri
c
a
l
c
o
m
p
o
n
e
n
ts
f
o
r
g
rid
-
c
o
n
n
e
c
ted
c
o
n
v
e
rters
u
n
d
e
r
v
o
lt
a
g
e
d
i
p
s”
,
IEE
E
T
ra
n
s.
o
n
In
d
u
strial
El
e
c
tro
n
ics
,
v
o
l.
5
6
,
n
o
.
6
,
J
u
n
e
2
0
0
9
,
p
p
.
2
1
6
2
-
2
1
7
3
.
[1
0
]
L
.
X
u
,
“
En
h
a
n
c
e
d
c
o
n
tr
o
l
a
n
d
o
p
e
ra
ti
o
n
o
f
DFIG
-
b
a
se
d
w
in
d
f
a
rm
s
d
u
ri
n
g
n
e
tw
o
rk
u
n
b
a
lan
c
e
”
,
I
EE
E
T
ra
n
s.
o
n
En
e
rg
y
Co
n
v
e
rsio
n
,
v
o
l
.
2
3
,
n
o
.
4
,
De
c
e
m
b
e
r
2
0
0
8
,
p
p
.
1
0
7
3
-
1
0
8
1
.
[1
1
]
F
.
K.
d
e
A
.
L
i
m
a
,
J.L
.
Da
n
tas
,
C.
G
.
C.
Bra
n
c
o
,
“
Re
a
c
ti
v
e
p
o
w
e
r
c
o
n
tro
l
o
f
DFIG
-
b
a
s
e
d
w
in
d
tu
rb
i
n
e
d
u
ri
n
g
v
o
lt
a
g
e
sa
g
”
,
3
8
th
A
n
n
u
a
l
Co
n
f
e
re
n
c
e
IE
EE
IECON 2
0
1
2
,
p
p
.
4
3
2
1
–
4
3
2
5
.
[1
2
]
A
.
Y.
A
b
d
e
laz
iz,
A
.
M
.
Ib
ra
h
im
,
A.M
.
A
si
m
,
A
.
H.
A
b
d
e
l
Ra
z
e
k
,
Y.
G
.
H
e
g
a
z
y
,
“
In
v
e
stig
a
ti
o
n
o
f
e
le
c
tri
c
a
l
d
y
n
a
m
i
c
s
o
f
DFI
G
-
b
a
se
d
w
in
d
tu
rb
i
n
e
s
d
u
rin
g
se
v
e
re
s
y
m
m
e
tri
c
a
l
g
rid
v
o
lt
a
g
e
d
ip
s”
,
IEE
E
In
t.
C
o
n
f
En
g
in
e
e
rin
g
a
n
d
T
e
c
h
n
o
lo
g
y
,
2
0
1
2
,
p
p
.
1
-
6.
[1
3
]
H.M
.
A
b
d
e
l
-
M
a
g
e
e
d
,
“
S
i
m
u
latio
n
o
f
th
e
d
iff
e
re
n
t
tran
s
m
issio
n
li
n
e
f
a
u
lt
s
f
o
r
a
g
rid
c
o
n
n
e
c
ted
win
d
f
a
r
m
w
it
h
d
if
fe
re
n
t
t
y
p
e
s
o
f
g
e
n
e
ra
to
rs”
,
In
tern
a
ti
o
n
a
l
Jo
u
rn
a
l
o
f
El
e
c
tri
c
a
l
a
n
d
Co
m
p
u
ter
En
g
in
e
e
rin
g
,
v
o
l.
2
,
n
o
.
1
,
2
0
1
2
p
p
.
35
-
45
[1
4
]
A
.
M
u
ru
k
e
sh
a
n
,
R.
Ra
jas
e
k
a
ra
n
,
“
P
o
w
e
r
s
y
ste
m
sta
b
il
it
y
e
n
h
a
n
c
e
m
e
n
t
a
n
d
im
p
ro
v
e
m
e
n
t
o
f
L
V
RT
c
a
p
a
b
il
it
y
o
f
a
DFIG
b
a
se
d
w
in
d
p
o
w
e
r
s
y
ste
m
b
y
u
sin
g
S
M
ES
a
n
d
S
F
CL
”
,
In
tern
a
ti
o
n
a
l
Jo
u
rn
a
l
o
f
El
e
c
tri
c
a
l
a
n
d
C
o
m
p
u
ter
En
g
in
e
e
rin
g
,
v
o
l.
3
,
n
o
.
5
,
2
0
1
3
,
p
p
.
6
1
8
-
6
2
8
.
[1
5
]
S
.
A
b
o
u
ri
d
a
,
C.
Du
f
o
u
r,
J.
Bé
lan
g
e
r,
G
.
M
u
re
re
,
N.
L
e
c
h
e
v
in
,
Yu
Biao
,
“
Re
a
l
-
ti
m
e
P
C
-
b
a
se
d
sim
u
lato
r
o
f
e
lec
tri
c
s
y
ste
m
s
a
n
d
d
riv
e
s”
,
1
7
th
A
n
n
u
a
l
IEE
E
A
p
p
li
e
d
P
o
w
e
r
El
e
c
tro
n
ics
Co
n
f
.
a
n
d
Ex
p
o
siti
o
n
,
M
a
r
c
h
1
0
-
1
4
,
2
0
0
2
,
Da
ll
a
s,
T
X
,
v
o
l.
1
,
p
p
.
4
3
3
-
4
3
8
.
[1
6
]
N.
M
o
h
a
n
,
T
.
M
.
U
n
d
e
lan
d
,
W
.
P
.
Ro
b
b
i
n
s,
P
o
w
e
r
El
e
c
tro
n
ics
:
Co
n
v
e
rters
,
A
p
p
li
c
a
ti
o
n
s
a
n
d
De
sig
n
(S
e
c
o
n
d
Ed
it
i
o
n
,
Jo
h
n
W
il
e
y
a
n
d
S
o
n
s,
S
i
n
g
a
p
o
re
,
1
9
9
5
).
B
I
O
G
RAP
H
I
E
S
O
F
AUTH
O
RS
Dr
Ka
n
u
n
g
o
Ba
ra
d
a
M
o
h
a
n
ty
re
c
e
iv
e
d
B.
Tec
h
.
d
e
g
re
e
in
El
e
c
tri
c
a
l
En
g
in
e
e
rin
g
f
ro
m
V
S
S
UT
,
Bu
rla
in
th
e
y
e
a
r
1
9
8
9
.
His
M
.
T
e
c
h
.
a
n
d
P
h
.
D.
d
e
g
re
e
s
a
re
f
ro
m
II
T
Kh
a
ra
g
p
u
r
in
th
e
y
e
a
r
s
1
9
9
0
a
n
d
2
0
0
2
,
re
sp
e
c
ti
v
e
ly
.
He
i
s
a
f
a
c
u
lt
y
m
e
m
b
e
r
o
f
NIT
Ro
u
rk
e
la
sin
c
e
1
9
9
1
,
a
n
d
p
re
se
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