Internati
o
nal
Journal of P
o
wer Elect
roni
cs an
d
Drive
S
y
ste
m
(I
JPE
D
S)
Vol
.
6
,
No
. 2,
J
une
2
0
1
5
,
pp
. 26
8~
27
3
I
S
SN
: 208
8-8
6
9
4
2
68
Jo
urn
a
l
h
o
me
pa
ge
: h
ttp
://iaesjo
u
r
na
l.com/
o
n
lin
e/ind
e
x.ph
p
/
IJPEDS
T Source Inverter Based Shunt Ac
tive Filter with LCL Passive
Filter f
o
r th
e 415V 50 Hz Distribu
tion Sys
t
e
ms
S. Sellakum
ar
*,
M.
Vi
jayak
u
mar
**
*Departm
ent
of
Ele
c
tri
cal
and
E
l
ectron
i
cs
Eng
i
ne
ering,
J
e
ppi
aar
E
ngineer
ing Col
l
e
g
e, Ch
enna
i,
Ind
i
a
**Jawaharlal Nehru Tec
hnological Univ
ersity
(JNTU), Anantpur
, India
Article Info
A
B
STRAC
T
Article histo
r
y:
Received Nov 7, 2014
Rev
i
sed
Feb 9, 20
15
Accepte
d
Mar 2, 2015
The inver
t
er to
polog
y
is
be
in
g us
ed as
an act
ive fil
t
er to
reduce th
e
harm
onics
in th
e power s
y
s
t
em
. Th
e tr
aditional voltag
e
source or curr
en
t
source inverters are having th
e disadvant
ag
es of limited output voltage rang
e
hence it may
n
o
t be
able to su
pply
enough
co
mpensating curr
ents during
heav
y s
w
it
chin
g s
u
rges
, Vuln
erabl
e
to
EM
I
nois
e
and
th
e
devic
e
s
get
s
damaged in
eith
er open
or short cir
c
uit conditio
ns and th
e main
switching
devic
e
of VS
I
an
d CS
I are
not
int
e
rchang
eab
le.
T
h
e a
c
tiv
e f
ilt
ers
are
the
t
y
pe
of DC-AC
sy
stem with wide range of
voltage r
e
gulation and in
tegration of
energ
y
stor
ages
is often
requir
e
d
.
Th
is cannot b
e
achieved with
convention
a
l
inverters and hence the impedan
ce sour
ce inver
t
ers have been suggested. Th
e
T source inver
t
ers are basically impe
dance sou
r
ce
inverters which can b
e
us
ed as
an a
c
tiv
e fil
t
er in
the p
o
wer s
y
s
t
em
. T
h
e M
A
TLAB s
i
m
u
lation i
s
done and
the r
e
sults ar
e discu
ssed in th
is paper for bo
th
th
e ty
p
e
s.
The
proposed dampening s
y
stem is fully
char
acterized b
y
LCL bas
e
d passive
filters and
T sou
r
ce
invert
er b
a
sed shunt
activ
e f
i
l
t
er. Th
e disturb
a
nces in
the
supply
voltage and load current
due to
the non linear lo
ads are observed in
the simulation
.
The same is st
udied after con
n
ecting the designed h
y
brid
shunt active f
ilter in the distribu
tion
s
y
stem. The
simulation results obtained
from the propos
ed method prov
es that it giv
e
s
comparativ
ely
b
e
tter THD
value.
Keyword:
Distribution sy
ste
m
Hyb
r
i
d
shu
n
t
activ
e filter
Shunt active fil
t
ers
Tot
a
l
ha
rm
oni
c di
st
o
r
t
i
o
n
Copyright ©
201
5 Institut
e
o
f
Ad
vanced
Engin
eer
ing and S
c
i
e
nce.
All rights re
se
rve
d
.
Co
rresp
ond
i
ng
Autho
r
:
S. Sellakum
a
r,
Depa
rtem
ent of Electrical a
n
d
El
ect
ro
ni
cs E
n
gi
nee
r
i
n
g,
Jeppiaar E
n
gineering Colle
ge,
R
a
ji
v
Ga
nd
hi
s
a
l
a
i
,
C
h
en
nai
-
6
0
3
2
1
0
,
Tam
i
lnad
u,
I
n
di
a.
Em
a
il: sellak
u
m
arin
@g
m
a
il.co
m
1.
INTRODUCTION
Th
e
Harm
o
n
i
c in
th
e
d
i
stribu
tio
n system
are lead
s t
o
po
or
p
o
wer quality p
r
o
b
l
em
s.
W
ith
t
h
e
p
r
o
liferation
o
f
n
on-lin
ear l
o
ad
s in
i
n
du
strial
ap
p
lica
tion
s
an
d
frequ
en
t switch
i
n
g
o
f
l
o
ads in
th
e
d
i
stribu
tio
n
syste
m
s, the com
p
ensation
of ha
rm
oni
c and reactive powe
r is becom
i
ng in
creasi
ngly concerne
d. T
h
e passive
filters h
a
v
e
b
e
en
wi
d
e
ly u
s
ed
b
ecau
s
e
of th
eir low co
st. Howev
e
r,
th
e p
e
rform
a
n
ces
o
f
su
ch
filters
are not
sensitive to the variation
of
reactive
power for t
h
e r
ealiz
ation of better
powe
r
f
actor. He
nce the
usage
of
activ
e filters yi
eld
s
th
e effectiv
e and
d
y
n
a
m
i
c co
m
p
en
sa
tion
with
t
h
e
v
a
ri
atio
n
o
f
th
e curren
t
wh
ich cann
o
t
be
carried out
with passi
ve
filters.
The c
o
mpensation of
harm
onic a
n
d
reactive
power ca
n be ac
hieve
d
dynam
i
cally in
the case of
SAF. T
h
e re
sea
r
ch in t
h
is
fi
el
d has
bee
n
d
o
n
e f
o
r m
a
ny
years an
d re
sea
r
che
r
s
pr
o
pose
d
se
ve
ral
m
e
t
hods
o
f
im
pro
v
i
n
g T
HD
val
u
e
u
p
t
o
5%
by
el
i
m
i
n
at
i
ng ha
rm
oni
cs sel
ect
i
v
e
l
y
or
redu
cing
it
b
y
u
s
ing
d
i
fferen
t filterin
g
techniq
u
e
s in
t
h
e activ
e filters. The con
tin
uou
s
po
wer
flow m
e
t
h
od
is
im
pl
em
ent
e
d i
n
ST
ATC
O
M
and
TC
SC
as t
h
ei
r c
ont
rol
st
r
a
t
e
gy
t
o
i
m
pro
v
e t
h
e
p
o
we
r s
y
st
em
phen
o
m
e
no
n
an
d
vo
ltag
e
st
ab
ility [1
-4
].
A non
-lin
ear fu
n
c
tion
b
a
sed
clo
s
ed
l
o
op
con
t
ro
l strateg
y
(withou
t lo
ad
cu
rren
t
ex
traction
)
fo
r th
ree-p
h
a
se SAF with
LC passiv
e
f
ilter to
en
h
a
n
ce th
e q
u
a
lity o
f
power b
y
redu
cin
g
t
h
e
Evaluation Warning : The document was created with Spire.PDF for Python.
I
S
SN
:
2
088
-86
94
I
J
PED
S
Vo
l. 6,
No
.
2,
Ju
ne 20
15
:
268
–
2
73
2
69
h
a
rm
o
n
i
cs [5
]. Th
e
Referen
c
es
p
a
p
e
rs
h
a
v
e
rep
o
rted field test resu
lts of act
iv
e filters
in
tend
ed
for
in
stallatio
n
o
n
d
i
stri
b
u
t
i
o
n syste
m
s. Th
e
activ
e filter is
ch
aracteri
zed
t
o
b
e
h
a
v
e
lik
e a
resistor for harm
o
n
i
c
frequen
c
ies.
Th
e propo
sed
d
i
stribu
tio
n
sy
ste
m
co
n
s
ists o
f
th
ree
d
i
st
ributio
n
lin
es, in
stallin
g
th
e activ
e filter o
n
th
e en
d
b
u
s
of eac
h l
i
n
e i
s
effect
i
v
e i
n
ha
r
m
oni
c dam
p
i
ng. T
h
e
po
we
r
factor,
reactive
powe
r flow, t
h
e voltage and c
u
rrent
v
a
riation
s
d
u
e
to
an non
lin
ear lo
ad
s are
o
b
serv
ed
u
s
in
g
power
qu
ality
m
e
ter and
the same is v
e
rified
in
th
e
sim
u
l
a
t
i
on. Th
e pr
op
ose
d
s
h
unt
act
i
v
e fi
l
t
er co
nsi
s
t
s
o
f
a t
h
ree p
h
as
e pwm
i
nvert
er w
o
r
k
s
base
d o
n
instantane
ous
powe
r the
o
ry
and yields bet
t
er res
u
lts for source c
u
rre
nt THD, reacti
v
e
power
and powe
r
factor.
2.
IN
STAN
TANEOU
S
P-Q THEORY
[
C
ON
TR
OL STRA
TEGY]
The insta
n
tane
ous
p-q the
o
ry has bee
n
used in ac
tive filters to determ
ine
the instanta
neous reactive
p
o
wer th
at h
a
s to
b
e
co
m
p
en
sated
i
n
activ
e filters [2
]-[3
]
.
In
t
h
is meth
od
, th
e
In
stan
tan
e
ou
s
real an
d
im
agi
n
ary
p
o
w
e
rs ha
ve fi
rst
b
een de
fi
ne
d i
n
t
h
e t
i
m
e
dom
ain. Let
t
h
e t
h
ree
phase
v
o
l
t
a
ges
are sense
d
at
poi
nt
of c
o
m
m
on coupl
i
n
g an
d de
not
e
d
as ea, eb an
d ec. The
l
o
ad side c
u
rre
n
ts are iaL, ibL and icL. T
h
e three
p
h
a
se vo
ltag
e
s an
d
load
cu
rren
t
s can
b
e
tr
an
sfo
r
m
e
d
in
to
th
eir
or
tho
gonal co
o
r
d
i
n
a
te
eq
u
i
v
a
len
t
s as
g
i
v
e
n
bel
o
w.
e
2
3
e
1
2
e
1
2
e
e
2
3
√
3
2
e
√
3
2
e
e
2
3
1
√
2
e
1
√
2
e
1
√
2
e
i
_
2
3
i
1
2
i
1
2
i
i
_
2
3
√
3
2
i
√
3
2
i
i
_
2
3
1
√
2
i
1
√
2
i
1
√
2
i
The
α
-
β
-0
is a th
ree d
i
m
e
n
s
io
n
a
l statio
nary
fram
e
o
f
referen
ce
wh
ere as th
e vo
ltag
e
an
d
cu
rren
t
space vectors are
rotating vectors.
T
h
e
tw
o instantane
ous real
powe
r
p0 and
p
αβ
, an
d a
n
in
s
t
an
ta
n
e
ou
s
im
aginary power
q
αβ
i
n
t
h
ree
pha
se f
o
ur
wi
r
e
sy
st
em
are de
fi
ne
d
wi
t
h
re
sp
ect
t
o
l
o
a
d
si
de
an
d
gi
ve
n
bel
o
w,
p
_
e
i
p
_
e
i
e
i
q
_
e
i
e
i
The syste
m
lo
ad curre
n
ts in
α
-
β
-0 co o
r
di
nat
e
sy
st
em
can al
so be det
e
rm
i
n
ed usi
n
g
abo
v
e equat
i
ons
by
fo
rm
i
ng m
a
t
r
i
x
a
n
d
t
a
ki
n
g
i
nve
rse t
r
ans
f
or
m
.
The refe
re
n
ce p
o
we
rs a
r
e
assi
gne
d t
o
t
h
e
Loa
d
In
st
ant
a
neo
u
s
Po
wers
as
foll
ows
,
p
∗
p
_
p
∗
p
_
q
∗
q
_
The c
o
m
p
ensa
ting c
u
rrents i
n
α
-
β
-0 re
fere
nce fram
e can be calc
u
lated by using the
refe
rence powers
m
e
nt
i
oned
i
n
t
h
e a
b
o
v
e e
q
uat
i
ons
an
d a
r
e
gi
ven
bel
o
w
,
Evaluation Warning : The document was created with Spire.PDF for Python.
I
J
PED
S
I
S
SN
:
208
8-8
6
9
4
T Sou
rce
In
verter Ba
sed
Sh
unt Active Filter with
LCL Pa
ssive Filter fo
r the 41
5V
5
0
Hz
… (S
.
S
e
lla
kuma
r)
27
0
i
_
p
∗
e
i
i
_
e
e
.p
∗
e
e
.q
∗
i
_
e
e
.p
∗
e
e
.q
∗
Whe
r
e,
e
e
e
The sam
e
can
be calculate
d i
n
a
−
b
−
c
refe
rence
f
r
am
e usi
ng
f
o
l
l
o
wi
ng
e
x
p
r
essi
ons
,
i
0
.
5
7
∙
i
_
0
.
8
2
∙
i
_
i
0
.
5
7
∙
i
_
0
.
4
1∙i
_
0
.707
∙
i
_
i
0
.577
∙
i
0
.
4
1∙
i
0
.707
∙
i
_
Fin
a
lly th
e resu
ltan
t
so
urce cu
rren
ts are ob
t
a
in
ed
b
y
ad
d
i
ng
th
e co
mp
e
n
s
a
tin
g
cu
rr
en
ts
with
th
e lo
ad
cu
rren
ts
as fo
llo
ws,
i
_
i
i
i
_
i
i
i
_
i
i
Th
is t
h
eory is
i
m
p
l
e
m
en
ted
to
p
r
od
u
c
e gate pu
lses
fo
r t
h
e T sou
r
ce inv
e
rter
b
a
sed
shun
t activ
e
filters. Th
e
LC
L passi
ve fi
l
t
e
r al
so co
nne
ct
ed i
n
t
h
e
di
st
ri
b
u
t
i
on sy
st
e
m
at
PC
C
.
A non l
i
n
ea
r l
o
a
d
of
rect
i
f
i
e
rs s
u
ppl
y
i
n
g
p
o
wer fo
r
d
i
fferen
t lo
ad
s is con
n
ected
to
the
syste
m
. Th
e same is si
m
u
la
ted
in
th
e M
A
TLAB and
th
e
d
i
ag
ra
m
i
s
gi
ve
n
bel
o
w.
3.
T SOURCE INVE
RTER
Th
e aim o
f
th
is work
is to
sho
w
th
e
p
o
s
sib
ility o
f
realizati
o
n
o
f
SAF u
s
i
n
g
T So
urce inv
e
rter sim
ilar
t
o
Z-s
o
urce i
n
vert
er
b
u
t
wi
t
h
u
s
e o
f
hi
g
h
fre
que
ncy
transform
e
r with
lo
w leak
ag
e inducta
nce. T
h
e
o
retical
analysis as we
ll sim
u
lation and
experim
e
ntal results are
s
h
own
in
t
h
is pap
e
r. Th
e id
ea h
e
re is to
u
s
e th
is T
so
urce i
n
v
e
rter in
stead
of
vo
ltag
e
so
urce
in
v
e
rter as
an activ
e filter in
th
e
d
i
stribu
t
i
o
n
system
. Th
e two
pos
si
bl
e c
o
nfi
g
u
r
at
i
o
ns a
r
e s
h
o
w
n i
n
Fi
gu
r
e
1
a a
n
d
b.
T
h
e
num
ber
o
f
passi
ve
el
em
ent
s
used
i
n
T
sou
r
ce
inve
rter less c
o
m
p
ared to Z
-
source inve
rter. The s
h
oot
through state of
s
o
urce c
u
rr
en
t i
s
well h
a
n
d
l
ed in
T
sou
r
ce i
n
ve
rt
er
com
p
ared t
o
Z t
y
pe. The
pe
rf
orm
a
nce of
T-S
o
u
r
ce i
n
ver
t
er base
d S
A
F
i
s
obse
r
ve
d
fr
o
m
t
h
e
MATLAB
simu
latio
n
,
th
e resu
lts are
g
i
v
e
n belo
w.
(a)
(b
)
Fi
gu
re
1 T
h
e t
w
o
p
o
ssi
bl
e co
nfi
g
u
r
at
i
o
n
s
;
a
and
b
eq
ui
val
e
nt
ci
rc
ui
t
s
o
f
T
So
ur
ce
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I
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4.
LCL FILTER
Th
e LCL filter as Fig
u
re 2
has co
mm
o
n
l
y
b
een
u
s
ed
to
giv
e
a b
e
tter smo
o
t
h
i
ng
of ou
t
p
u
t
cu
rren
ts
fr
om
a vol
t
a
ge
so
urce
based
con
v
e
r
t
e
rs c
o
m
p
ared t
o
ot
he
r L
an
d
LC
fi
l
t
ers.
A
l
o
t
of
re
search
has
bee
n
do
ne
in
th
e ap
p
licatio
n
s
of LCL
filters with
g
r
i
d
-co
n
n
ected
inv
e
rters an
d
PWM b
a
sed rectifiers m
a
in
ly d
u
e
to
its
ab
ility
to
m
i
n
i
mize
th
e h
a
rmo
n
i
cs inj
ected
in
to
th
e g
r
i
d
[6
]-[7
]. Th
e investig
atio
n
s
on
LCL filter n
o
w h
a
v
e
foc
u
se
d on fundam
ental curre
nt track
i
ng a
n
d
reso
na
nce da
m
p
i
ng fo
r m
o
st
l
y
sim
p
l
e
gri
d
con
n
ect
ed i
n
v
e
rt
ers
an
d
rectifiers. Th
e reson
a
n
c
e freq
u
e
n
c
y of LCL filter is
u
s
u
a
lly tu
n
e
d
to
b
e
at least ten
ti
m
e
s o
f
the
fu
n
d
am
ent
a
l
li
ne f
r
e
que
ncy
f
o
r
t
h
e a
b
o
v
e m
e
nt
i
one
d
ap
pl
i
cat
i
ons.
It
i
s
t
h
e
r
e
f
o
r
e
not
di
f
f
i
c
ul
t
t
o
sim
u
l
t
a
neousl
y
achi
e
ve t
h
e
desi
re
d co
nt
r
o
l
ob
ject
i
v
es at
fu
ndam
e
nt
al
fre
que
ncy
usi
ng e
x
i
s
t
i
ng c
ont
rol
tech
n
i
qu
es. The Mod
e
l,
Design
criteria and
perfo
r
m
a
n
ce of
LCL filter is
d
i
scu
ssed
i
n
th
e feren
ces [6
] and [7
].
Fig
u
re
2
.
LCL
Equ
i
v
a
len
t
ci
rcu
it of LCL
filter
5.
SIMULINK MO
DEL
OF
PROP
OSE
D
SYSTE
M
Th
e
h
ybrid
shu
n
t
activ
e filter con
s
ists
o
f
LCL p
a
ssi
v
e
filt
er and
im
p
e
d
a
n
ce [T co
nn
ected
]
sou
r
ce
in
v
e
rter b
a
sed
activ
e filter. Th
e switch
i
n
g
pu
lses fo
r
th
e activ
e filter are p
r
o
d
u
c
ed
u
s
ing
in
stan
tan
e
ous p
-
q
th
eory b
a
sed
co
n
t
ro
ller. Th
e
p
o
wer q
u
ality
p
a
ram
e
ters
su
ch
as sou
r
ce curren
t THD,
p
o
wer factor and
reactiv
e
po
we
r re
qui
re
m
e
nt
s are ob
s
e
rve
d
by
M
A
TLAB
si
m
u
l
a
ti
on a
nd t
a
b
u
l
a
t
e
d. The
val
u
e
s
of t
h
em
pro
v
e t
h
e
effectiness
of
HSAF, as Fi
gure
3.
Fi
gu
re 3.
Si
m
u
l
i
nk
M
odel
of
DS wi
t
h
SA
F
6.
SIMULINK
MODEL OF
T SOURCE B
A
SED
SHUNT ACTIVE FILTER [SUB SYSTEM 1]
Fig
u
re
4
sho
w
s T Sou
r
ce
b
a
sed
sh
un
t activ
e filter.
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8-8
6
9
4
T Sou
rce
In
verter Ba
sed
Sh
unt Active Filter with
LCL Pa
ssive Filter fo
r the 41
5V
5
0
Hz
… (S
.
S
e
lla
kuma
r)
27
2
Fig
u
re
4
.
T Sou
r
ce Based Shu
n
t
Activ
e
Filter
7.
R
E
SU
LTS AN
D ANA
LY
SIS
The FFT a
n
al
ysis is done a
n
d the s
o
urce
curren
t THD o
f
d
i
d
t
ribu
tio
n
syste
m
with
ou
t
and
with
HSAF is gi
ve
n as Figure 5
and
Figu
re 6. The other power
quality
para
meters such as reactive powe
r
and
powe
r fact
or are also im
prove
d
.
Fig
u
re
5
.
So
urce Cu
rren
t THD
with
ou
t
HSAF
Figu
re
6.
S
o
u
r
ce Cur
r
e
n
t TH
D
with
HS
AF
8.
CO
NCL
USI
O
N
The
powe
r qua
lity param
e
ters suc
h
as
powe
r fact
or,
reactive powe
r a
n
d source c
u
rre
nt THD of three
pha
se 4
4
0
V
5
0
Hz
di
st
ri
b
u
t
i
on sy
st
em
wi
th n
on l
i
n
ea
r l
o
ad
s ha
ve bee
n
o
b
ser
v
e
d
by
M
A
TLAB
si
m
u
l
a
t
i
o
n
.
They are
ve
ry
m
u
ch above t
h
eir standard
va
lues. T
h
e sa
m
e
ha
ve been
obs
e
rve
d
with T
s
o
urce inve
rter
base
d
HSAF and
power
qu
ality v
a
lu
es fou
n
d
t
o
b
e
with
in
t
h
eir stand
a
rd
s. Th
e so
urce cu
rren
t
THD
h
a
s
b
een
red
u
ce
d fr
om
28
.1
% t
o
4.
86
%, t
h
e react
i
v
e po
wer re
q
u
i
r
em
ent
has bee
n
red
u
ce
d f
r
o
m
358
0V
AR
t
o
2
4
7
0
VAR
an
d t
h
e
po
we
r fact
or i
m
prove
d fr
om
0.2
6
t
o
0.
7
2
.
The ab
ov
e res
u
l
t
s
sho
w
t
h
at
t
h
e T sou
r
ce i
nve
rt
er
b
a
sed
h
y
b
r
i
d
sh
un
t activ
e filter co
nn
ected to th
e
d
i
stribu
tion
system
i
m
p
r
o
v
e
s th
e qu
ality o
f
po
wer.
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2
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2
73
REFERE
NC
ES
[1]
Murat Kale, En
gin O
¨
zdem
ir,
“Harm
onic and
reactive
power com
p
ensation with shunt active power filter under
non-ideal mains voltage”,
Journ
a
l of Ele
c
tric
P
o
wer
Systems Research, EL
SE
V
I
ER,
74 (2005)
363–370, March
2005.
[2]
Em
ílio F. Couto
,
Júlio S. Mart
ins, João
L. Afonso, “Sim
ulation
Results of a Shunt
Active Power Fi
lter
with Con
t
rol
Based on p-
q Th
eor
y
”, Internatio
nal
confer
ence
o
n
renew
a
ble en
ergies and
power
qualities,2003
[3]
Ali I. Maswood, and Fangrui
Liu,
“A Unity
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Po
wer-Factor Con
v
erter Us
ing th
e S
y
nchronous-R
eferen
ce-Frame-
Based H
y
steresis Current Contr
o
l”, in
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EEE Transactions on I
ndustry Applications,
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o
. 2, March/Apr
i
l
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[4]
Haniy
e
h Maref
a
tjou and Moha
mmad
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rformanc
e
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AT
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C
SC
in
Improvement Voltag
e
Stability
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il
i
t
y
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m
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International Journal Of
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e
r
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[5]
Arivarasu A, Muthukumar K and Balasubraman
ian R, “Clo
sed Loop Non Linear Control of Shunt H
y
brid Power
Filter for
Harm
onics Mitig
ation
i
n
Industrial
Dist
ribution S
y
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In
ternation
a
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f
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y
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JPEDS)
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[6]
Yi Tang, Poh Ch
iang Loh
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Peng
Wang, Fook Hoong Choo, Fe
ng
Gao, and Fred
e
Blaabjerg, “Generalized D
e
sign
of
High Perform
ance Shunt Act
i
v
e
Power Filter
With Output L
C
L Filter
”
, in
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EE Transactio
ns on Industrial
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,
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c
h 2012
[7]
Qian Liu,
Li Pen
g
, Yong Kang
, S
h
iy
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ng Tang, Deliang Wu, and Y
u
Qi, “A
Novel
Design and Op
timization
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er
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ve Power Filter”, in
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August 2014
BIOGRAP
HI
ES OF
AUTH
ORS
S.
Se
llakumar
was born in Tam
ilnadu India
,
on June
25, 1978. He receiv
e
d the
B.E (with firs
t
class) from Uni
v
ersity
o
f
Madras, M.E (First
class with honors) from
Sath
y
a
bama University
.
Currently
h
e
is
doing resear
ch in harmonics in
the power s
y
s
t
em due to non-linear lo
ads and
working as
As
s
i
s
t
ant P
r
ofes
s
o
r i
n
J
e
ppia
a
r Eng
i
neering
Coll
ege
,
Chenna
i,
India
.
His
res
ear
ch
inter
e
s
t
s
inc
l
ude
power el
ec
tronic
s
, ac
tiv
e fi
lt
ering
,
and
con
t
rol
s
y
s
t
em
s
.
M
.
Vijay
a
kumar
, Graduated f
r
om NB
KR Inst
itute of
Science and Technol
og
y
,
Vid
y
anagar,
A.P, India 1988. He obtained
M.
Tech Degree from Regional Engi
neering College, Warangal,
India
in 1990.
He receiv
ed Do
ctoral Degr
ee fr
om
JNT University
H
y
d
e
rab
a
d,
India
in 2000. 1
Ph.D is awarded under his guidan
ce
and guiding 6 Ph.Ds at present. He
is the recipien
t of
“Pandit Madan Mohan Malaviya” me
m
o
rial pri
ze. Curr
entl
y he
is
the Director
,
foreign affai
r
s
and alumini matters of JNTU An
antapur
University
, Anan
tapur
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