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b
le
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p
ee
d
Dri
ve
s
d
u
r
in
g
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o
lta
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e
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a
g
(
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.
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en
u
ka
d
ev
i
)
1399
p
er
f
o
r
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er
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o
f
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r
ev
io
u
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m
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ar
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e
p
r
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id
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g
t
h
e
e
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n
t
r
es
u
lt
s
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s
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m
p
ar
ed
to
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e
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ASD’
s
i.e
.
Z
s
o
u
r
ce
n
e
u
tr
al
li
n
k
ed
Vie
n
n
a
r
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ti
f
ier
s
F
ig
u
r
e
5
(
d
)
is
p
r
o
d
u
cin
g
th
e
d
esire
d
r
esu
lt
s
.
W
h
er
ea
s
t
h
e
o
th
er
ASD
’
s
w
it
h
Dio
d
e
r
ec
tifie
r
w
it
h
o
u
t
Z
-
s
o
u
r
ce
Fig
u
r
e
5
(
a)
an
d
o
th
er
ar
e
n
o
t p
er
f
o
r
m
i
n
g
w
ell.
4.
ASD
WI
T
H
Z
-
SO
URC
E
N
E
UT
RAL
L
I
NK
E
D
VI
E
NN
A
RE
C
T
I
F
I
E
R
Af
ter
d
is
c
u
s
s
in
g
t
h
e
p
er
f
o
r
m
an
ce
o
f
v
ar
io
u
s
d
r
iv
e
s
i
n
d
if
f
er
en
t
ar
ea
s
u
ch
a
s
DC
L
i
n
k
,
R
o
to
r
an
d
Stato
r
Vo
ltag
e
&
c
u
r
r
en
t,
Ou
tp
u
t
Vo
ltag
e,
Sp
ee
d
an
d
E
l
ec
tr
o
m
a
g
n
etic
T
o
r
q
u
e
w
e
ca
m
e
to
th
e
co
n
cl
u
s
io
n
th
at
t
h
e
A
S
D
w
it
h
Z
s
o
u
r
ce
V
ien
n
a
r
ec
tifie
r
o
u
tp
er
f
o
r
m
s
all
o
th
er
co
m
p
etito
r
.
Si
n
ce
th
e
i
n
ter
n
al
s
tr
u
c
tu
r
e
o
f
th
e
ASD
t
h
at
e
m
p
lo
y
s
t
h
e
Z
s
o
u
r
ce
Vie
n
n
a
r
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tifie
r
p
r
o
v
es
b
etter
p
er
f
o
r
m
a
n
ce
a
m
o
n
g
s
t
th
e
f
o
u
r
to
p
o
lo
g
ie
s
Fig
u
r
e
6
is
tak
e
n
f
o
r
in
ter
p
r
etatio
n
.
Fig
u
r
e
6
.
A
SD
w
ith
Z
s
o
u
r
ce
n
eu
tr
al
l
in
k
ed
Vien
n
a
r
ec
ti
f
ier
T
ab
le
6
.
P
ar
am
eter
s
C
o
n
s
id
er
e
d
Fo
r
C
o
m
p
ar
is
o
n
A
n
d
R
e
s
u
lt
s
P
a
r
a
me
t
e
r
s
D
u
r
a
t
i
o
n
o
f
D
i
st
o
r
t
i
o
n
(
s)
L
o
w
e
st
V
a
l
u
e
r
e
a
c
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e
d
D
C
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i
n
k
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o
l
t
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g
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0
.
5
-
1
.
0
1
0
0
(
V
)
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o
t
o
r
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n
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t
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1
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r
ce
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tifie
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n
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ig
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r
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f
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r
d
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d
a
p
o
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tr
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h
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n
c
ase
o
f
s
i
n
g
le
p
h
a
s
e
r
ec
tif
icat
io
n
,
co
n
n
ec
ted
in
s
u
c
h
a
w
a
y
th
at
i
t
ca
n
r
ed
u
ce
th
e
v
o
lta
g
e
s
tr
e
s
s
ac
r
o
s
s
th
e
p
o
w
er
elec
tr
o
n
ic
r
e
ctif
y
i
n
g
s
w
i
tch
an
d
ca
n
p
r
o
d
u
ce
a
g
o
o
d
o
p
er
atin
g
v
o
ltag
e
f
o
r
th
e
i
n
v
er
ter
th
a
t
h
as
to
b
e
co
n
n
ec
ted
w
ith
th
e
r
ec
tif
ier
.
T
h
e
v
ar
io
u
s
p
ar
a
m
ete
r
s
d
is
cu
s
s
ed
co
r
r
esp
o
n
d
in
g
to
ASD
ar
e
tab
u
lated
in
T
ab
le
6
.
T
h
at
is
f
o
r
v
ar
io
u
s
p
ar
a
m
eter
s
th
e
d
is
to
r
tio
n
l
ev
el
an
d
t
h
e
lo
w
est
v
al
u
e
r
ea
ch
ed
ar
e
tab
u
lated
an
d
d
is
c
u
s
s
ed
.
T
h
e
u
s
e
o
f
Z
s
o
u
r
ce
Vien
n
a
r
ec
ti
f
ier
th
e
v
o
lt
ag
e
at
th
e
o
u
tp
u
t a
l
m
o
s
t
d
o
u
b
les t
h
e
v
o
ltag
e
at
t
h
e
DC
lin
k
.
So
it
p
r
o
v
id
es
a
b
etter
s
o
lu
tio
n
to
m
in
i
m
ize
v
o
lt
ag
e
s
ag
d
u
e
to
v
ar
io
u
s
r
ea
s
o
n
s
b
y
p
r
o
v
id
in
g
t
h
e
in
v
er
ter
a
b
etter
o
p
er
atin
g
v
o
lt
ag
e.
A
ls
o
t
h
e
r
ec
o
v
er
y
t
i
m
e
o
f
th
is
ASD
i
s
m
u
c
h
b
etter
w
h
e
n
co
m
p
ar
in
g
it
w
it
h
o
th
er
ASD
as
0
.
8
to
1
s
f
aster
th
an
o
th
er
s
.
So
t
h
e
Z
s
o
u
r
ce
Vien
n
a
f
ed
ASD
f
i
n
d
its
ap
p
licatio
n
q
u
iet
i
m
p
r
ess
i
v
e
i
n
t
h
e
p
r
o
ce
s
s
co
n
tr
o
l
ap
p
licatio
n
in
in
d
u
s
tr
ial
s
ec
to
r
.
T
h
is
A
SD
ca
n
b
e
u
s
ed
f
o
r
co
n
tr
o
llin
g
d
if
f
er
e
n
t t
y
p
e
s
o
f
m
o
to
r
s
esp
e
ciall
y
f
o
r
th
e
co
n
tr
o
lli
n
g
o
f
in
d
u
ctio
n
m
ac
h
i
n
e.
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
9
3
–
1
4
0
1
1400
5.
RE
SU
L
T
S AN
D
D
I
SCU
SS
I
O
N
T
h
e
r
esu
lts
o
f
Dio
d
e
r
ec
tif
ier
w
it
h
o
u
t
Z
-
s
o
u
r
ce
an
d
w
i
th
Z
-
s
o
u
r
ce
in
v
er
ter
p
r
o
v
es th
at
d
u
r
in
g
v
o
lta
g
e
s
ag
t
h
e
d
c
lin
k
v
o
lta
g
e
is
v
er
y
lo
w
(
4
0
V
-
5
0
V)
to
s
u
s
ta
in
t
h
e
m
o
to
r
in
r
u
n
n
in
g
co
n
d
itio
n
.
T
h
e
s
i
n
g
le
p
h
ase
t
w
o
leg
Vie
n
n
a
r
ec
ti
f
ier
p
r
o
d
u
ce
s
1
2
5
V
d
u
r
in
g
v
o
lta
g
e
s
ag
co
n
d
itio
n
w
h
ic
h
i
s
a
s
li
g
h
tl
y
i
m
p
r
o
v
ed
co
n
d
itio
n
w
h
e
n
co
m
p
ar
ed
w
it
h
d
io
d
e
r
ec
tif
ier
s
.
T
h
e
s
in
g
le
p
h
a
s
e
n
e
u
tr
al
lin
k
ed
Vie
n
n
a
r
ec
tif
ier
w
it
h
Z
-
s
o
u
r
ce
i
n
v
er
ter
p
r
o
d
u
ce
s
th
e
r
eq
u
ir
ed
d
c
lin
k
v
o
lta
g
e
(
3
1
5
V)
f
o
r
th
e
co
n
tin
o
u
s
o
p
er
atio
n
o
f
th
e
i
n
d
u
ctio
n
m
o
to
r
.
T
h
is
to
p
o
lo
g
y
o
f
ad
j
u
s
tab
le
s
p
ee
d
d
r
iv
e
w
it
h
s
in
g
le
p
h
ase
n
e
u
tr
a
l
lin
k
ed
i
n
v
er
ter
w
it
h
Z
-
s
o
u
r
c
e
in
v
er
ter
p
r
o
v
es
t
h
e
s
atis
f
ac
to
r
y
r
es
u
lt
s
d
u
r
in
g
v
o
lt
ag
e
s
a
g
co
n
d
itio
n
.
6.
CO
NCLU
SI
O
N
T
h
is
p
ap
er
ex
am
in
e
s
a
co
m
p
ar
ativ
e
s
t
u
d
y
o
n
t
h
e
p
er
f
o
r
m
an
ce
o
f
f
o
u
r
to
p
o
lo
g
ies
o
f
A
d
j
u
s
tab
le
Sp
ee
d
Dr
iv
es.
A
SD
’
s
w
it
h
th
e
co
m
b
i
n
atio
n
o
f
f
o
llo
w
in
g
,
Dio
d
e
r
ec
tif
ier
w
ith
o
u
t
Z
-
s
o
u
r
ce
in
v
er
ter
,
Dio
d
e
r
ec
tif
ier
w
ith
Z
-
s
o
u
r
ce
in
v
er
t
er
,
Sin
g
le
p
h
ase
t
w
o
leg
Vie
n
n
a
r
ec
ti
f
ier
an
d
Z
-
s
o
u
r
ce
n
e
u
tr
al
lin
k
ed
Vien
n
a
r
ec
tif
ier
u
s
i
n
g
Ma
t
lab
/Si
m
u
li
n
k
ar
e
co
m
p
ar
ed
.
P
er
f
o
r
m
a
n
c
e
p
ar
a
m
eter
s
o
f
ASD
s
u
ch
as
DC
li
n
k
v
o
lta
g
e,
r
o
to
r
an
d
s
tato
r
cu
r
r
en
t,
m
o
to
r
s
p
ee
d
an
d
elec
tr
o
m
ag
n
eti
c
to
r
q
u
e
w
a
s
in
v
est
ig
ated
f
o
r
th
e
f
o
u
r
d
if
f
er
en
t
to
p
o
lo
g
ies.
I
t
is
n
o
ticea
b
le
t
h
at
t
h
e
ASD
w
it
h
Z
-
s
o
u
r
c
e
n
e
u
tr
al
l
in
k
ed
Vie
n
n
a
r
ec
t
if
ier
p
r
o
v
es
b
etter
p
er
f
o
r
m
a
n
ce
b
y
p
r
o
d
u
cin
g
h
i
g
h
er
DC
li
n
k
v
o
lta
g
e
a
n
d
le
s
s
er
v
ar
iatio
n
i
n
s
p
ee
d
d
u
r
in
g
v
o
lta
g
e
s
a
g
w
h
e
n
co
m
p
ar
ed
to
th
e
o
th
er
t
h
r
ee
to
p
o
lo
g
ies
d
is
cu
s
s
ed
i
n
t
h
is
p
ap
er
.
T
h
u
s
th
i
s
ASD
s
y
s
te
m
w
it
h
Z
s
o
u
r
ce
in
v
er
ter
an
d
n
eu
tr
al
lin
k
ed
Vie
n
n
a
r
ec
t
if
ier
i
m
p
r
o
v
e
s
th
e
v
o
lta
g
e
s
a
g
p
r
o
b
lem
in
i
n
d
u
c
tio
n
m
o
to
r
w
i
th
f
a
s
ter
r
esp
o
n
s
e.
RE
F
E
R
E
NC
E
S
[1
]
S.
Da
h
iy
a
,
D.K.
Ja
in
,
As
h
o
k
k
u
m
a
r,
R.
Da
h
i
y
a
a
n
d
S
.
S
.
De
s
w
a
l
,
e
t
a
l.
,
"
Im
p
ro
v
e
me
n
t
o
f
A
d
ju
st
a
b
l
e
S
p
e
e
d
Dr
ive
s
(
AS
D’s
)
Per
fo
rm
a
n
c
e
Du
rin
g
S
a
g
Co
n
d
it
i
o
n
s Us
i
n
g
Ultr
a
c
a
p
a
c
it
o
r
s
"
,
IEE
E
co
n
f
e
re
n
c
e
,
pp.
1
-
4
,
2
0
08
.
[2
]
M
.
H.J.
Bo
ll
e
n
,
"
Un
d
e
rsta
n
d
in
g
P
o
w
e
r
Qu
a
li
t
y
P
ro
b
lem
s:
V
o
lt
a
g
e
S
a
g
s
a
n
d
In
terru
p
ti
o
n
s
"
,
S
e
ries
o
n
p
o
w
e
r
e
n
g
in
e
e
rin
g
,
IEE
E
P
re
ss
,
20
0
0
.
[3
]
"
IEE
E
Re
c
o
m
m
e
n
d
e
d
p
ra
c
ti
c
e
s o
n
m
o
n
it
o
ri
n
g
e
lec
tri
c
p
o
w
e
r
q
u
a
li
ty
"
,
IEE
E
S
tan
d
a
rd
.
1
1
5
9
,
1
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[4
]
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[5
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C.
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s,
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ly
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rd
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.
[7
]
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.
N.
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jeti
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Ba
n
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rjee
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ly
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[8
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n
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p
.
76
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ly
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.
[9
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2
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Evaluation Warning : The document was created with Spire.PDF for Python.