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221
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Ana
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De
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y:
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2
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t
A
n
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ra
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teristic
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ra
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teristic
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c
k
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lu
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ra
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p
re
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s
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re
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lt
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se
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p
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se
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h
e
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g
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to
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f
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p
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se
is
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%
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th
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se
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c
k
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se
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re
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to
t
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h
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se
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R
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P
M
G
w
h
ic
h
is
5
5
%
.
K
ey
w
o
r
d
:
Do
u
b
le
s
tato
r
P
er
m
a
n
en
t
m
a
g
n
e
t
Slo
tted
r
o
to
r
Co
p
y
rig
h
t
©
201
7
In
s
t
it
u
te o
f
A
d
v
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n
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d
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n
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e
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All
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h
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C
o
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r
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s
p
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ing
A
uth
o
r
:
R.
N.
Fird
au
s
,
Facu
lt
y
o
f
E
lectr
ical
E
n
g
i
n
ee
r
in
g
,
Un
i
v
er
s
iti T
ek
n
ik
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la
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g
T
u
ah
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7
6
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ian
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m
ail:
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NT
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D
UCT
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Gen
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t
d
r
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P
MG
u
s
in
g
s
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m
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latio
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[
1
]
.
A
f
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r
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Ne
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all
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ap
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d
f
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r
h
y
b
r
id
v
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icle
s
[
2
]
-
[
9
]
.
M.
No
r
h
is
a
m
et.
al
p
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t
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m
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ar
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o
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th
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d
en
s
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o
f
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al
t
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es
o
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o
u
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tato
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s
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t
an
d
s
lo
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le
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s
to
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f
P
MG
th
at
ar
e
p
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r
p
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s
ely
d
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ed
f
o
r
ag
r
icu
l
t
u
r
e
s
ec
to
r
s
[
1
0
]
.
T
h
e
p
o
w
er
d
en
s
it
y
e
v
al
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atio
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i
s
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y
i
m
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o
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er
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r
tab
le
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th
at
is
s
m
all
er
,
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h
t
w
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g
h
t
as
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ll
as
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ig
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t
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.
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n
ad
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itio
n
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o
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tato
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ld
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a
x
i
m
ize
t
h
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u
s
a
g
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f
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x
li
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k
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w
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co
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cr
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[
1
1
]
.
A
n
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w
s
tr
u
ct
u
r
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f
o
r
d
o
u
b
le
s
t
ato
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p
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to
im
p
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v
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y
[
1
2
]
.
Ho
w
e
v
er
,
th
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esear
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l
y
co
v
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f
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s
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d
y
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f
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v
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p
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tio
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d
s
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c
h
r
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n
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u
s
m
ac
h
in
e
[
1
3
]
-
[
15
]
.
No
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s
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th
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th
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f
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-
p
h
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s
e
Do
u
b
le
Stato
r
Slo
tted
R
o
to
r
P
er
m
an
e
n
t
Ma
g
n
et
Ge
n
er
at
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r
(
DSSR
-
P
MG
)
.
Mo
s
t
o
f
th
e
m
f
o
c
u
s
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o
n
th
e
p
er
m
a
n
e
n
t
m
a
g
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et
s
y
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c
h
r
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o
u
s
m
u
ltip
h
ase
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e
n
er
ato
r
s
[
1
6
]
-
[
18
]
th
at
m
a
y
h
a
v
e
p
r
o
s
p
ec
t
f
o
r
ap
p
licatio
n
s
in
Evaluation Warning : The document was created with Spire.PDF for Python.
I
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2
0
8
8
-
8
694
IJ
PEDS
Vo
l.
8
,
No
.
1
,
Ma
r
ch
2
0
1
7
:
2
1
3
–
221
214
s
tan
d
-
alo
n
e
s
el
f
-
ex
c
ited
g
en
er
atin
g
s
y
s
te
m
s
i
n
r
u
r
al
ar
ea
s
an
d
lo
w
-
p
o
w
er
h
y
d
r
o
elec
tr
ic
p
lan
ts
[
1
9
]
,
[
20
]
.
I
n
th
is
p
ap
er
,
a
f
iv
e
-
p
h
a
s
e
DS
SR
-
P
MG
is
p
r
o
p
o
s
ed
f
o
r
lo
w
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co
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g
i
n
g
to
r
q
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e
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m
p
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th
r
ee
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p
h
a
s
e
DSS
R
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P
MG
.
2.
B
ASI
C
S
T
RUC
T
UR
E
2
.
1
.
B
a
s
ic
s
t
ruct
ure
a
nd
co
nfig
ura
t
io
ns
o
f
DSSR
-
P
M
G
Fig
u
r
e
1
s
h
o
w
s
t
h
e
b
asic
s
tr
u
ctu
r
e
a
n
d
eq
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i
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t
m
a
g
n
e
tic
cir
cu
it
o
f
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DS
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.
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ad
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m
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y
w
a
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p
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ap
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[
2
1
]
.
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er
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ar
e
1
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s
lo
ts
2
0
p
o
les
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ase
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F
ig
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d
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n
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at
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ter
s
t
ato
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.
(a
)
T
h
r
ee
-
p
h
ase
(
b
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Fiv
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p
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ase
(
c)
E
q
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Fig
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B
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ated
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n
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a
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v
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ta
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ter
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n
d
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w
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d
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r
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en
t
lo
s
s
es
i
n
th
e
p
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m
a
n
en
t
m
a
g
n
e
t
[
2
2
]
.
T
h
e
m
ater
ial
u
s
ed
f
o
r
f
iv
e
-
p
h
a
s
e
DSS
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-
P
MG
ar
e
s
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m
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it
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t
h
r
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p
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ase
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n
.
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h
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d
esi
g
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p
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m
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th
r
ee
a
n
d
f
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p
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ase
DS
SR
-
P
MG
ar
e
lis
ted
in
T
ab
le
1
.
T
ab
le
1
.
DSSR
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P
MG
s
p
ec
i
f
ic
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n
P
a
r
a
me
t
e
r
s
D
S
S
R
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P
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3
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t
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a
t
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d
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a
me
t
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r
(
mm
)
1
5
6
1
5
6
I
n
n
e
r
st
a
t
o
r
d
i
a
me
t
e
r
(
mm
)
86
94
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mb
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r
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sl
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t
s
18
20
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e
r
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p
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e
s
20
18
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mb
e
r
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se
3
5
P
M
v
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l
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(
m
3
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6
.
3
x
1
0
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7
7
.
0
3
5
x
1
0
-
7
P
M
s
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z
e
(
mm
)
6
x
2
x
5
2
.
5
6
.
7
x
2
x
5
2
.
5
C
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(
mm
)
0
.
6
0
.
6
S
t
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(
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5
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55
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f
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l
e
(
°
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15
13
S
t
a
t
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r
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t
h
t
h
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c
k
n
e
ss (m
m)
2
2
S
t
a
t
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r
t
o
o
t
h
w
i
d
t
h
(
mm
)
5
5
O
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t
e
r
st
a
t
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r
sl
o
t
o
p
e
n
i
n
g
(
mm
)
1
8
.
3
1
6
.
5
I
n
n
e
r
st
a
t
o
r
sl
o
t
o
p
e
n
i
n
g
(
mm
)
8
.
9
8
.
5
O
u
t
e
r
st
a
t
o
r
t
o
o
t
h
h
e
i
g
h
t
(
mm
)
12
9
I
n
n
e
r
st
a
t
o
r
t
o
o
t
h
h
e
i
g
h
t
(
mm
)
15
18
2
.
2
.
P
ha
s
e
a
nd
co
il a
rr
a
ng
e
m
ent
s
T
h
e
v
o
ltag
e
g
e
n
er
atio
n
p
r
o
ce
s
s
i
n
P
MG
b
eg
i
n
s
w
it
h
t
h
e
p
er
m
an
e
n
t
m
a
g
n
ets
o
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th
e
r
o
to
r
p
r
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d
u
ce
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r
o
tatin
g
m
a
g
n
etic
f
ield
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h
e
n
it
is
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r
n
ed
b
y
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r
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m
e
m
o
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er
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d
t
h
u
s
i
n
d
u
ce
s
t
h
e
v
o
ltag
es
w
it
h
i
n
t
h
e
s
tato
r
w
i
n
d
i
n
g
s
.
T
h
e
w
i
n
d
in
g
la
y
o
u
t
an
d
w
i
n
d
i
n
g
f
ac
to
r
o
f
t
h
e
P
MG
d
ep
en
d
s
o
n
t
h
e
co
m
b
i
n
ati
o
n
o
f
s
tato
r
s
lo
t
a
n
d
p
o
les
.
A
p
h
aso
r
d
iag
r
a
m
i
n
F
ig
u
r
e
2
s
h
o
w
th
e
p
h
ase
v
ec
to
r
in
m
ec
h
an
ical
d
is
p
lace
m
e
n
t,
w
h
er
ea
s
3
6
0
°/
3
=
1
2
0
° f
o
r
th
r
ee
-
p
h
ase
a
n
d
3
6
0
°/
5
=
7
2
°
in
f
iv
e
-
p
h
a
s
e.
(
a)
T
h
r
ee
-
p
h
ase
(
b
)
Fiv
e
-
p
h
a
s
e
Fig
u
r
e
2
.
P
h
ase
v
ec
to
r
s
in
m
ec
h
an
ica
l d
eg
r
ee
I
n
t
h
is
p
ap
er
,
th
e
s
tar
o
f
s
lo
ts
m
et
h
o
d
is
u
s
ed
to
f
in
d
t
h
e
w
i
n
d
in
g
la
y
o
u
t
f
o
r
b
o
th
th
r
ee
a
n
d
f
i
v
e
-
p
h
ase
DSSR
-
P
MG
.
Fo
r
th
r
ee
-
p
h
ase
1
8
-
s
lo
t/2
0
-
p
o
le
DSSR
-
PM
G,
ea
ch
p
h
ase
co
n
s
is
t
s
o
f
s
i
x
co
il
s
th
at
ar
e
co
n
n
ec
ted
in
s
er
ie
s
.
W
h
ile
in
f
i
v
e
p
h
a
s
e
2
0
-
s
lo
t/
1
8
-
p
o
le
co
n
f
ig
u
r
atio
n
s
,
ea
ch
p
h
a
s
e
h
as
f
o
u
r
co
il
s
th
at
also
co
n
n
ec
ted
i
n
s
er
ies.
B
o
th
co
n
f
i
g
u
r
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n
s
ar
e
i
m
p
le
m
e
n
ti
n
g
o
f
n
o
n
-
o
v
el
ap
p
in
g
co
n
ce
n
tr
ated
w
in
d
i
n
g
in
s
er
ies
f
o
r
b
o
th
in
n
er
an
d
o
u
ter
s
tato
r
w
it
h
d
o
u
b
le
la
y
er
w
in
d
i
n
g
ar
r
an
g
e
m
en
t
to
li
m
it
t
h
e
lo
s
s
es
a
n
d
to
r
q
u
e
r
ip
p
le.
I
n
o
r
d
er
to
ac
h
iev
e
h
ig
h
f
u
n
d
a
m
en
tal
w
i
n
d
in
g
f
ac
to
r
,
t
h
e
n
u
m
b
er
o
f
s
lo
t
p
er
p
h
ase,
q
o
f
DSS
R
-
P
MG
is
m
u
s
t
lo
w
e
r
t
h
a
n
0
.
5
b
u
t h
ig
h
er
th
a
n
0
.
2
5
.
T
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W
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th
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d
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3
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r
esp
ec
tiv
el
y
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g
u
r
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3
(
a)
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d
(
b
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s
h
o
w
m
m
f
v
ec
to
r
f
o
r
ea
ch
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ils
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d
co
il
w
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n
d
in
g
ar
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m
e
n
t
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r
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r
ee
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d
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v
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ase
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ea
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ec
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ase
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n
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°],
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a
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ase
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g
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d
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ase
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ase
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1
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2
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1
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11
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12
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ase
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k
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n
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th
e
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v
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o
lar
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y
w
h
ich
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e
s
a
m
e
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r
o
ce
s
s
ar
e
ap
p
l
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h
ase
B
(
S
7
,
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8
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,
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9
,
S
16
,
S
17
'
,
S
18
)
an
d
C
(
S
4
,
S
5
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,
S
6
,
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13
,
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14
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15
)
,
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n
th
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p
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ase
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ch
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h
a
s
e
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n
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r
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n
p
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itiv
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n
d
th
e
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th
er
s
t
w
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i
n
n
e
g
ati
v
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p
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lar
it
y
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Fro
m
Fi
g
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r
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3
(
b
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,
in
f
i
v
e
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p
h
ase
DSS
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P
MG
co
il
w
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n
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n
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g
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en
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s
a
m
e
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et
h
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er
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at
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s
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m
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ed
w
it
h
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1
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S
10
,
S
11
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,
S
20
’
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e
b
elo
n
g
i
n
g
to
p
h
ase
A
.
Si
m
ilir
f
o
r
p
h
ase
B
,
C
,
D,
an
d
E
,
w
h
ic
h
is
co
n
tai
n
s
f
o
u
r
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lo
t
s
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er
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h
ase
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h
t
w
o
s
lo
t
in
p
o
s
it
iv
e
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n
d
t
w
o
in
n
e
g
ati
v
e
p
o
lar
it
y
.
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h
e
p
o
s
itiv
e
a
n
d
n
e
g
ati
v
e
p
o
la
r
it
y
o
f
th
e
co
i
l
in
t
h
e
s
lo
t
s
m
ea
n
s
th
e
co
n
n
ec
t
io
n
s
b
et
w
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h
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m
u
s
t
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e
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n
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er
ies
an
d
s
eq
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e
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ce
p
o
lar
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y
i
n
o
r
d
er
t
o
g
et
a
r
eliab
le
a
n
d
ac
ce
p
tab
le
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r
o
m
t
h
e
FEM
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h
e
co
m
p
lete
co
il
v
ec
to
r
s
an
d
w
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n
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g
ar
r
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g
e
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e
n
t
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r
th
r
ee
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d
f
iv
e
-
p
h
ase
DSSR
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P
MG
ar
e
l
is
ted
in
T
ab
le
2
.
T
ab
le
2
.
DSSR
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P
MG
p
h
ase
a
n
d
co
il a
r
r
an
g
e
m
e
n
ts
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P
h
a
se
C
o
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l
a
r
r
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n
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t
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se
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se
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1
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2
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3
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10
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11
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12
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1
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10
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S
11
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S
20
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B
S
7
, S
8
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S
9
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16
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17
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S
18
S
8
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9
’
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S
18
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S
19
C
S
4
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5
’
,
S
6
, S
13
, S
14
'
,
S
15
S
6
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7
’
,
S
16
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S
17
D
-
S
4
, S
5
’
,
S
14
',
S
15
E
-
S
2
, S
3
’
,
S
12
',
S
13
(
a)
T
h
r
ee
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p
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ase
DS
SR
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Evaluation Warning : The document was created with Spire.PDF for Python.
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ase
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5
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ase
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ase
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ase
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ase
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ase
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r
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ase
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ase
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r
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5
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ase
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ase
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[1
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S
.
Eri
k
ss
o
n
,
e
t
a
l.
,
“
L
o
ss
e
v
a
lu
a
ti
o
n
a
n
d
d
e
sig
n
o
p
ti
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n
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o
r
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t
d
riv
e
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p
e
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n
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n
t
m
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g
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n
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o
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s
g
e
n
e
ra
to
rs f
o
r
w
in
d
p
o
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e
r,
”
Ap
p
l
ied
En
e
rg
y
,
p
p
.
2
6
5
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2
7
1
,
2
0
1
1
.
[2
]
H.
W
.
Ki
m
,
e
t
a
l.
,
“
M
o
d
e
li
n
g
a
n
d
c
o
n
tr
o
l
o
f
P
M
S
G
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b
a
se
d
v
a
riab
le
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sp
e
e
d
w
in
d
tu
rb
i
n
e
,
”
Ap
p
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e
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E
n
e
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y
,
v
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8
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p
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B
a
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m
f
,
V
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f
[
V
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n
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r
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Evaluation Warning : The document was created with Spire.PDF for Python.
I
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IJ
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Vo
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8
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No
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1
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Ma
r
ch
2
0
1
7
:
2
1
3
–
221
220
[3
]
D.
G
.
Do
rre
ll
,
“
De
sig
n
Req
u
ire
me
n
ts
fo
r
Bru
sh
les
s
PM
Ge
n
e
ra
to
r
fo
r
u
se
d
in
S
ma
ll
Ren
e
w
a
b
le
E
n
e
rg
y
S
y
ste
ms
,
”
T
h
e
A
n
n
u
a
l
C
o
n
f
e
re
n
c
e
o
f
IEE
E
In
d
u
strial
El
e
c
tro
n
ics
S
o
c
iety
(IE
CON
),
p
p
.
2
1
6
-
2
2
1
,
2
0
0
7
.
[4
]
X
.
L
iu
,
e
t
a
l
.
,
“
A
No
v
e
l
Du
a
l
-
S
tato
r
Hy
b
rid
Ex
c
it
e
d
S
y
n
c
h
ro
n
o
u
s
W
in
d
G
e
n
e
ra
to
r,
”
IEE
E
T
ra
n
sa
c
t
io
n
s o
n
In
d
u
stry
Ap
p
li
c
a
ti
o
n
s
,
v
ol
/i
ss
u
e
:
45
(
3
)
,
p
p
.
9
4
7
-
9
5
3
,
2
0
0
9
.
[5
]
Y
.
L
i,
e
t
a
l
.
,
“
A
No
v
e
l
Dire
c
t
T
o
rq
u
e
Co
n
tro
l
P
e
rm
a
n
e
n
t
M
a
g
n
e
t
S
y
n
c
h
ro
n
o
u
s
M
o
t
o
r
Driv
e
u
se
d
in
El
e
c
tri
c
a
l
V
e
h
icle
,
”
In
ter
n
a
ti
o
n
a
l
J
o
u
rn
a
l
o
f
Po
we
r
El
e
c
tro
n
ics
a
n
d
Dr
ive
S
y
ste
ms
(
I
J
PE
DS
),
v
ol
/i
ss
u
e
:
1
(
2
)
,
p
p
.
1
2
9
-
1
3
8
,
2
0
1
1
.
[6
]
S
.
Niu
,
e
t
a
l
.
,
“
A
Per
ma
n
e
n
t
-
ma
g
n
e
t
D
o
u
b
le
-
sta
t
o
r
In
te
g
ra
ted
sta
rte
r
-
g
e
n
e
ra
to
r
f
o
r
Hy
b
rid
El
e
c
tric
Veh
icle
s,”
IEE
E
V
e
h
icle
P
o
w
e
r
a
n
d
P
ro
p
u
lsi
o
n
C
o
n
f
e
re
n
c
e
(VPP
C)
,
p
p
.
1
-
5
,
2
0
0
8
.
[7
]
D
.
Zh
a
n
g
,
e
t
a
l
.,
“
De
sig
n
a
n
d
A
n
a
lys
is
o
f
a
Do
u
b
le
-
S
ta
to
r
C
u
p
-
Ro
to
r
Dire
c
tl
y
Dr
ive
n
Per
ma
n
e
n
t
M
a
g
n
e
t
W
in
d
Po
we
r Ge
n
e
ra
to
r,”
P
o
w
e
r
El
e
c
tr
o
n
ics
a
n
d
M
o
ti
o
n
C
o
n
tr
o
l
C
o
n
f
e
re
n
c
e
,
v
o
l.
3
,
p
p
.
1
-
5
,
2
0
0
6
.
[8
]
I
.
T
a
ri
m
e
r,
“
D
e
sig
n
in
g
a
n
Eff
ici
e
n
t
P
e
rm
a
n
e
n
t
M
a
g
n
e
t
Ge
n
e
ra
to
r
f
o
r
Ou
td
o
o
r
Uti
li
t
ies
,
”
In
ter
n
a
t
i
o
n
a
l
J
o
u
r
n
a
l
o
f
En
g
i
n
e
e
rin
g
S
c
ien
c
e
a
n
d
I
n
n
o
v
a
ti
v
e
T
e
c
h
n
o
l
o
g
y
(
IJ
ES
IT
),
v
ol
/i
ss
u
e
:
3
(
3
)
,
p
p
.
5
4
3
-
5
4
8
,
2
0
1
4
.
[9
]
Y.
H.
Ch
e
n
,
e
t
a
l
.
,
“
P
M
W
in
d
G
e
n
e
r
a
to
r
T
o
p
o
lo
g
ies
,
”
IEE
E
T
r
a
n
sa
c
ti
o
n
s
o
n
In
d
u
stry
Ap
p
li
c
a
ti
o
n
s,
v
o
l.
4
1
,
p
p
.
1
6
1
9
-
1
6
2
6
,
2
0
0
5
.
[1
0
]
M
.
N
o
rh
isa
m
,
e
t
a
l
.,
“
Co
m
p
a
ra
ti
v
e
E
v
a
lu
a
ti
o
n
o
n
P
o
w
e
r
-
S
p
e
e
d
D
e
n
sity
o
f
P
o
rta
b
le
P
e
rm
a
n
e
n
t
M
a
g
n
e
t
G
e
n
e
ra
to
r
F
o
r
A
g
ricu
lt
u
re
A
p
p
li
c
a
ti
o
n
s
,
”
Pro
g
re
ss
in
E
lec
tro
ma
g
n
e
ti
c
s R
e
se
a
rc
h
,
v
o
l.
1
2
9
,
p
p
.
3
4
5
-
3
6
3
,
2
0
1
2
.
[1
1
]
M
.
No
r
h
isa
m
,
e
t
a
l
.
,
“
Co
m
p
a
riso
n
o
n
P
e
rf
o
rm
a
n
c
e
o
f
a
S
in
g
le
P
h
a
se
a
n
d
T
h
re
e
P
h
a
s
e
Do
u
b
le
S
tato
r
Ty
p
e
P
e
rm
a
n
e
n
t
M
a
g
n
e
t
G
e
n
e
ra
to
r,
”
Asia
-
Pa
c
if
ic
S
y
mp
o
siu
m
o
n
Ap
p
li
e
d
E
lec
tro
ma
g
n
e
ti
c
s
a
n
d
M
e
c
h
a
n
ics
,
K
u
a
la
L
u
mp
u
r
,
p
p
.
2
3
1
-
3
4
,
2
0
1
0
.
[1
2
]
N.
F
.
Ra
ja,
e
t
a
l.
,
“
Im
p
ro
v
e
m
e
n
t
o
f
En
e
rg
y
De
n
sit
y
in
S
in
g
le
S
tato
r
In
terio
r
P
e
r
m
a
n
e
n
t
M
a
g
n
e
t
Us
in
g
Do
u
b
le
S
tato
r
T
o
p
o
lo
g
y
,
”
M
a
th
e
ma
ti
c
a
l
Pro
b
lem
s in
En
g
in
e
e
rin
g
,
p
p
.
1
-
1
5
,
2
0
1
4
.
[1
3
]
L
.
A
.
P
e
re
ira,
e
t
a
l
.,
“
M
o
d
e
l
o
f
a
fi
v
e
-
p
h
a
se
in
d
u
c
ti
o
n
ma
c
h
in
e
a
ll
o
win
g
fo
r
h
a
rm
o
n
ics
in
t
h
e
a
ir
-
g
a
p
fi
e
l
d
,
Pa
rt
I
:
Pa
ra
me
ter
d
e
ter
min
a
t
io
n
a
n
d
g
e
n
e
ra
l
e
q
u
a
ti
o
n
s,”
in
P
ro
c
.
I
EE
E
IE
CON
,
p
p
.
9
8
–
1
0
3
,
2
0
0
4
.
[1
4
]
R
.
Ilk
a
,
e
t
a
l.
,
“
Op
ti
m
u
m
De
sig
n
o
f
a
F
iv
e
P
h
a
se
P
e
rm
a
n
e
n
t
M
a
g
n
e
t
S
y
n
c
h
ro
n
o
u
s
M
o
t
o
r
f
o
r
Un
d
e
rw
a
t
e
r
V
e
h
icle
s
b
y
u
se
o
f
P
a
rti
c
le
S
w
a
r
m
Op
ti
m
i
z
a
ti
o
n
,
”
T
EL
KOM
NIKA
In
d
o
n
e
si
a
n
J
o
u
r
n
a
l
o
f
El
e
c
trica
l
E
n
g
i
n
e
e
rin
g
,
v
ol
/i
ss
u
e
:
10
(
5
)
,
p
p
.
9
2
5
-
9
3
2
,
2
0
1
2
.
[1
5
]
L
.
P
a
rsa
,
e
t
a
l
.
,
“
F
iv
e
-
p
h
a
se
in
teri
o
r
p
e
rm
a
n
e
n
t
-
m
a
g
n
e
t
m
o
to
rs
w
it
h
l
o
w
to
rq
u
e
p
u
lsa
ti
o
n
,
”
IEE
E
T
r
a
n
s.
In
d
.
A
p
p
l.
,
v
ol
/i
ss
u
e
:
43
(
1
)
,
p
p
.
4
0
–
4
6
,
2
0
0
7
.
[1
6
]
D.
V
izire
a
n
u
,
e
t
a
l.
,
“
In
v
e
stig
a
ti
o
n
o
n
m
u
lt
i
-
sta
r
stru
c
tu
re
s
f
o
r
la
rg
e
p
o
w
e
r
d
irec
t
-
d
riv
e
w
in
d
g
e
n
e
ra
to
r
,”
El
e
c
tr.
Po
we
r Co
mp
o
n
.
S
y
st.
,
v
o
l
/i
ss
u
e
:
35
(
2
)
,
p
p
.
1
3
5
–
1
5
2
,
2
0
0
7
.
[1
7
]
D.
V
izire
a
n
u
,
e
t
a
l
.
, “
De
sig
n
a
n
d
o
p
ti
miz
a
ti
o
n
o
f
a
9
-
p
h
a
se
a
x
ia
l
-
fl
u
x
PM
sy
n
c
h
ro
n
o
u
s g
e
n
e
ra
to
r wit
h
c
o
n
c
e
n
tra
te
d
win
d
i
n
g
fo
r
d
ire
c
t
-
d
riv
e
win
d
tu
r
b
in
e
,
”
in
Co
n
f
.
Re
c
.
IEE
E
IA
S
An
n
u
.
M
e
e
ti
n
g
,
T
a
m
p
a
,
F
L
,
p
p
.
1
9
1
2
–
1
9
1
8
,
2
0
0
6
.
[1
8
]
G
.
K.
S
in
g
h
,
e
t
a
l
.
,
“
A
n
a
l
y
sis
o
f
a
sa
tu
ra
ted
m
u
lt
ip
h
a
se
(six
-
p
h
a
se
)
se
lf
-
e
x
c
it
e
d
in
d
u
c
ti
o
n
g
e
n
e
ra
to
r,
”
In
t.
J
.
Eme
rg
in
g
El
e
c
tr.
Po
we
r
S
y
st
.,
v
ol
/i
ss
u
e
:
7
(
2
)
,
p
p
.
1
–
2
1
,
2
0
0
6
.
[1
9
]
S
.
Ka
to
,
et
al
.,
“
A
lo
w
-
c
o
st
sy
ste
m
o
f
v
a
ria
b
le
-
sp
e
e
d
c
a
sc
a
d
e
d
in
d
u
c
ti
o
n
g
e
n
e
ra
t
o
rs
fo
r
sm
a
ll
-
sc
a
le
h
y
d
ro
e
lec
tricity,”
i
n
Co
n
f
.
Re
c
.
IEE
E
IA
S
A
n
n
u
.
M
e
e
ti
n
g
,
Ch
ica
g
o
,
IL
,
p
p
.
1
4
1
9
–
1
4
2
4
,
2
0
0
1
.
[2
0
]
G
.
K.
S
in
g
h
,
e
t
a
l
.
,
“
A
n
a
l
y
sis
o
f
a
sa
tu
ra
ted
m
u
lt
ip
h
a
se
(six
-
p
h
a
se
)
se
lf
-
e
x
c
it
e
d
in
d
u
c
ti
o
n
g
e
n
e
ra
to
r,
”
In
t.
J
.
Eme
rg
in
g
El
e
c
tr.
Po
we
r
S
y
st
.
,
v
o
l
/i
ss
u
e
:
7
(
2
)
,
p
p
.
1
–
2
1
,
2
0
0
6
.
[2
1
]
S
.
P
a
u
lsa
m
y
,
“
Re
d
u
c
ti
o
n
o
f
Co
g
g
in
g
T
o
rq
u
e
in
D
u
a
l
Ro
t
o
r
P
e
rm
a
n
e
n
t
M
a
g
n
e
t
G
e
n
e
ra
to
r
f
o
r
Dire
c
t
Co
u
p
l
e
d
W
in
d
En
e
rg
y
S
y
ste
m
s
”
.
[2
2
]
O
.
Ba
rré
,
e
t
a
l
.
,
“
Co
n
c
e
n
trate
d
W
in
d
in
g
s
in
Co
m
p
a
c
t
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
rs:
M
a
n
a
g
in
g
Eff
icie
n
c
y
,
”
M
a
c
h
in
e
s
,
v
o
l
/i
ss
u
e
:
4
(
2
)
,
p
p
.
1
-
3
2
,
2
0
1
6
.
[2
3
]
F
.
M
ier,
“
P
e
rm
a
n
e
n
t
M
a
g
n
e
t
S
y
n
c
h
ro
n
o
u
s
M
a
c
h
i
n
e
s
w
it
h
No
n
-
Ov
e
rlap
p
in
g
Co
n
c
e
n
trate
d
W
in
d
in
g
s
f
o
r
L
o
w
-
S
p
e
e
d
Dire
c
t
-
Driv
e
A
p
p
li
c
a
rti
o
n
s
,
”
P
h
D t
h
e
sis,
Ro
y
a
l
In
stit
u
te
o
f
Tec
h
n
o
il
o
g
y
,
2
0
0
8
.
[2
4
]
D.
Ha
n
se
lma
n
,
“
Bru
sh
les
s
P
e
rm
a
n
e
n
t
-
M
a
g
n
e
t
M
o
to
r
De
sig
n
,”
Ne
w
Yo
rk
,
M
c
G
ra
w
-
Hill
,
1
9
9
4
.
B
I
O
G
RAP
H
I
E
S
O
F
AUTH
O
RS
R.
S
u
h
a
iri
wa
s
b
o
rn
o
n
1
3
Ju
n
e
1
9
8
4
a
t
K
o
ta
Bh
a
ru
Ke
lan
tan
.
He
re
c
e
iv
e
d
th
e
B.
En
g
.
i
n
In
d
u
strial
El
e
c
tro
n
ics
f
ro
m
Un
iv
e
rsiti
M
a
la
y
sia
P
e
rli
s,
M
a
la
y
si
a
in
2
0
0
9
,
a
n
d
M
.
S
c
.
i
n
El
e
c
tri
c
a
l
P
o
w
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r
En
g
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rin
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f
ro
m
Un
iv
e
rsiti
P
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tra
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a
lay
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a
la
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0
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C
u
rre
n
tl
y
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u
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n
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h
is
P
h
.
D.
i
n
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lec
tri
c
a
l
m
a
c
h
in
e
d
e
sig
n
a
t
Un
iv
e
rsiti
T
e
k
n
ik
a
l
M
a
la
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sia
M
e
la
k
a
.
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re
se
a
rc
h
in
tere
sts
a
re
e
lec
tri
c
a
l
m
a
c
h
in
e
d
e
sig
n
,
e
lec
tri
c
m
a
c
h
in
e
sim
u
latio
n
,
e
lec
tri
c
d
r
iv
e
s,
a
n
d
e
n
e
rg
y
c
o
n
v
e
rsio
n
.
Evaluation Warning : The document was created with Spire.PDF for Python.
I
J
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I
SS
N:
2
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2
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U
n
iv
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o
f
S
y
d
n
e
y
A
u
stra
li
a
.
Evaluation Warning : The document was created with Spire.PDF for Python.