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-
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T
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Fig
u
r
e
1
s
h
o
w
s
t
h
e
SEI
G
f
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d
in
g
t
h
r
ee
-
p
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ase
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d
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ctio
n
m
o
to
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d
F
ig
u
r
e
2
s
h
o
w
s
t
h
e
s
ch
e
m
atic
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c
u
it
o
f
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G
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e
ed
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g
t
h
r
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ase
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n
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ctio
n
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o
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ad
to
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A
T
C
OM
is
co
n
n
ec
ted
to
d
is
tr
ib
u
tio
n
s
y
s
te
m
at
p
o
i
n
t
o
f
co
m
m
o
n
co
u
p
li
n
g
f
o
r
h
ar
m
o
n
ic
s
u
p
p
r
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io
n
f
o
r
b
o
th
s
in
g
le
-
p
h
ase
a
n
d
t
h
r
ee
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p
h
ase
lo
ad
co
n
d
itio
n
s
.
ST
A
T
C
OM
is
a
s
h
u
n
t
ac
ti
v
e
F
A
C
T
S
d
ev
ice
u
s
ed
to
co
m
p
en
s
ate
h
ar
m
o
n
ics
in
s
o
u
r
ce
co
m
p
o
n
en
t
s
w
h
e
n
co
n
n
ec
ted
to
p
o
w
er
d
is
t
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ib
u
tio
n
s
y
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te
m
.
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A
T
C
OM
i
s
co
n
n
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ted
i
n
p
ar
allel
to
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i
s
tr
ib
u
tio
n
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y
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te
m
a
n
d
in
d
u
ce
s
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m
p
en
s
ati
n
g
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u
r
r
en
ts
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m
i
n
ate
h
ar
m
o
n
ics.
S
T
A
T
C
OM
is
a
s
i
m
p
le
v
o
lta
g
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s
o
u
r
ce
co
n
v
er
ter
(
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w
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th
a
s
m
all
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o
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r
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r
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ter
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n
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tr
o
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Sin
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ct
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ato
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r
o
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g
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s
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r
ce
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m
p
ed
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ce
is
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n
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ec
ted
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T
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O
M
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n
n
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ted
at
p
o
in
t
o
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co
m
m
o
n
co
u
p
lin
g
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er
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te
m
.
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T
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T
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en
d
s
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m
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en
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g
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i
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al
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th
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ilter
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m
m
o
n
co
u
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g
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ic
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p
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n
d
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c
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r
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atic
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CO
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I
n
g
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n
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al,
d
ir
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t
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n
tr
o
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is
p
r
ef
er
r
ed
w
h
er
e
v
er
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as
t
v
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co
n
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s
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v
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m
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k
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u
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ec
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s
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e
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n
b
e
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atin
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ter
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o
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least.
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t
o
f
d
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f
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n
t
co
n
tr
o
l
s
tr
ate
g
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s
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m
o
r
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e
f
f
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t
m
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h
o
d
o
f
co
n
tr
o
llin
g
th
e
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A
T
C
OM
is
b
y
t
h
e
s
y
n
c
h
r
o
n
o
u
s
r
ef
e
r
en
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f
r
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e
s
tr
ate
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,
w
h
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h
u
s
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co
-
o
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d
in
ate
tr
an
s
f
o
r
m
atio
n
s
to
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e
n
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ate
th
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cu
r
r
en
t r
ef
er
e
n
ce
.
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t
e
m
p
lo
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s
th
e
w
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k
n
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C
lar
k
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T
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tio
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ar
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r
an
s
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m
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p
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r
p
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t
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m
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at
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P
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p
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th
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co
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g
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r
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On
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,
r
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s
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s
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e
m
p
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an
s
f
o
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t
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q
u
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tit
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b
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k
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t
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al
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ase
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.
Fi
g
u
r
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3
s
h
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co
n
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l
s
tr
ateg
y
p
r
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d
u
cin
g
p
u
ls
e
s
to
ST
A
T
C
OM
.
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f
ST
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f
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DIS
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4
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SE
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f
ee
di
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le
-
ph
a
s
e
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nd
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n
m
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t
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lo
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d w
it
h S
T
AT
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M
a
t
P
CC
Fig
u
r
e
4
s
h
o
w
s
th
r
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ase
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r
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v
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g
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s
o
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r
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cu
r
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en
t
s
,
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ad
cu
r
r
en
t
an
d
in
j
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ted
cu
r
r
en
ts
f
r
o
m
ST
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T
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w
h
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n
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f
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in
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s
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s
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in
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m
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h
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w
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e
f
o
r
m
s
s
h
o
w
s
s
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r
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r
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m
ain
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s
i
n
u
s
o
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d
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n
tain
s
le
s
s
h
ar
m
o
n
ics.
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o
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m
p
e
n
s
ate
s
o
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r
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c
u
r
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t
s
,
ST
A
T
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OM
in
j
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ts
co
m
p
e
n
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g
c
u
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[1
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Z
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v
e
P
o
w
e
r
F
il
ter
u
n
d
e
r
Disto
rted
a
n
d
Un
b
a
la
n
c
e
d
S
u
p
p
ly
V
o
lt
a
g
e
s
,
”
I
EE
E
T
ra
n
sa
c
ti
o
n
s
o
n
In
d
u
stria
l
El
e
c
tro
n
ics
,
v
o
l
/i
ss
u
e
:
60
(
12
)
,
p
p
.
5
3
7
6
-
5
3
9
0
,
2
0
1
3
.
[3
]
“
IEE
E
S
tan
d
a
rd
De
f
in
it
io
n
s
f
o
r
t
h
e
M
e
a
su
re
m
e
n
t
o
f
El
e
c
tri
c
P
o
we
r
Qu
a
n
ti
ti
e
s
u
n
d
e
r
S
in
u
so
i
d
a
l,
No
n
sin
u
s
o
id
a
l
,
Ba
lan
c
e
d
,
o
r
U
n
b
a
lan
c
e
d
C
o
n
d
it
i
o
n
s,
”
IEE
E
S
t
d
.
1
4
5
9
-
2
0
1
0
.
[4
]
A
.
G
h
o
sh
a
n
d
G
.
L
e
d
w
ich
,
“
P
o
w
e
r
Qu
a
li
t
y
En
h
a
n
c
e
m
e
n
t
Us
in
g
Cu
sto
m
P
o
w
e
r
De
v
ice
s,
”
Klu
we
r
Aca
d
e
mic
Pu
b
li
s
h
e
rs
,
2
0
0
2
.
[5
]
S
.
M
.
R.
Ra
f
iei,
e
t
a
l.
,
“A
n
o
p
ti
m
a
l
a
n
d
f
lex
ib
le
c
o
n
tro
l
stra
teg
y
f
o
r
a
c
ti
v
e
f
il
terin
g
a
n
d
p
o
w
e
r
fa
c
to
r
c
o
rre
c
ti
o
n
un
d
e
r
n
o
n
-
sin
u
so
i
d
a
l
li
n
e
v
o
lt
a
g
e
s
,”
IEE
E
T
ra
n
s.
P
o
we
r De
l
.
,
v
o
l
/
i
ss
u
e
:
16
(
2
)
,
p
p
.
2
9
7
–
3
0
5
,
2
0
0
1
.
[6
]
A.
H.
No
ro
u
z
i
a
n
d
A.
M
.
S
h
a
rd
,
“
A No
v
e
l
Co
n
tro
l
S
c
h
e
m
e
f
o
r
th
e
S
TAT
COM
S
tab
il
it
y
En
h
a
n
c
e
m
e
n
t
,
”
2
0
0
3
IEE
E
PE
S
T
r
a
n
sm
issio
n
a
n
d
Distrib
u
ti
o
n
C
o
n
fer
e
n
c
e
a
n
d
Exp
o
si
ti
o
n
,
2
0
0
3
.
[7
]
G
.
E.
A
h
m
e
d
,
e
t
a
l.
,
“
Op
ti
m
a
l
S
TAT
COM
c
o
n
tro
ll
e
r
f
o
r
e
n
h
a
n
c
in
g
w
in
d
f
a
r
m
p
o
w
e
r
s
y
st
e
m
p
e
r
f
o
rm
a
n
c
e
u
n
d
e
r
f
a
u
lt
c
o
n
d
it
i
o
n
s,
”
2
0
1
6
Ei
g
h
tee
n
t
h
In
ter
n
a
ti
o
n
a
l
M
id
d
le E
a
st
Po
we
r S
y
ste
ms
Co
n
fer
e
n
c
e
(
M
EP
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)
,
Ca
iro
,
Eg
y
p
t,
p
p
.
2
2
6
-
233
,
2
0
1
6
.
[8
]
E.
R.
M
a
u
b
o
y
,
e
t
a
l.
,
“
S
tab
il
it
y
e
n
h
a
n
c
e
m
e
n
t
o
f
a
p
o
w
e
r
s
y
s
tem
w
it
h
w
in
d
g
e
n
e
ra
ti
o
n
u
sin
g
A
NN
b
a
se
d
S
TAT
COM,
”
1
0
th
I
n
ter
n
a
t
io
n
a
l
Co
n
fer
e
n
c
e
o
n
Ad
v
a
n
c
e
s
in
Po
we
r
S
y
ste
m
Co
n
tro
l,
Op
e
ra
t
io
n
&
M
a
n
a
g
e
me
n
t
(
AP
S
COM
2
0
1
5
)
,
Ho
n
g
Ko
n
g
,
p
p
.
1
-
6
,
2
0
1
5
.
[9
]
H.
S
a
m
e
t
a
n
d
M
.
A
.
Ja
rra
h
i,
“
A
c
o
m
p
a
riso
n
b
e
twe
e
n
S
V
C
a
n
d
S
TAT
COM
in
f
li
c
k
e
r
m
it
i
g
a
ti
o
n
o
f
e
le
c
tri
c
a
r
c
f
u
rn
a
c
e
u
sin
g
p
ra
c
ti
c
a
l
re
c
o
rd
e
d
d
a
ta,
”
2
0
1
5
3
0
t
h
I
n
ter
n
a
t
io
n
a
l
P
o
we
r
S
y
ste
m
Co
n
fer
e
n
c
e
(
PS
C)
,
T
e
h
ra
n
,
Ira
n
,
p
p
.
300
-
3
0
4
,
2
0
1
5
.
[1
0
]
T
.
P
a
u
lraj
,
e
t
a
l.
,
“
M
it
ig
a
ti
o
n
o
f
p
o
w
e
r
lo
ss
in
tran
sm
issio
n
a
n
d
d
istri
b
u
ti
o
n
li
n
e
u
sin
g
S
T
AT
COM,
”
2
0
1
6
In
ter
n
a
t
io
n
a
l
C
o
n
fer
e
n
c
e
o
n
A
d
v
a
n
c
e
d
C
o
mm
u
n
ic
a
ti
o
n
Co
n
tr
o
l
a
n
d
C
o
mp
u
ti
n
g
T
e
c
h
n
o
lo
g
ie
s
(
ICACCCT
)
,
Ra
m
a
n
a
th
a
p
u
ra
m
,
In
d
ia,
p
p
.
4
3
2
-
435
,
2
0
1
6
.
[1
1
]
P
.
S
a
d
a
n
a
n
d
a
m
,
“
GA
F
o
r
Op
ti
m
a
l
P
I
in
DC
V
o
lt
a
g
e
Re
g
u
latio
n
o
f
DST
A
T
C
OM
,
”
In
ter
n
a
ti
o
n
a
l
J
o
u
rn
a
l
o
f
El
e
c
trica
l
a
n
d
C
o
mp
u
ter
En
g
in
e
e
rin
g
(
IJ
EC
E)
,
v
ol
/i
ss
u
e
:
1
(
2
)
,
pp.
110
-
1
1
8
,
2
0
1
1
.
[1
2
]
A
.
Ba
n
e
rji
,
“
DST
AT
C
OM
A
p
p
li
c
a
ti
o
n
f
o
r
M
it
ig
a
ti
o
n
o
f
Vo
lt
a
g
e
S
a
g
Ca
u
se
d
b
y
D
y
n
a
m
ic
L
o
a
d
s
in
A
u
to
n
,
”
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 (
IJ
PE
DS
)
,
v
ol
/i
ss
u
e
:
1
(
2
)
,
p
p.
2
3
2
-
2
4
0
,
2
0
1
2
.
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