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h
e
s
w
i
tc
h
ed
r
elu
cta
n
ce
m
ac
h
i
n
e
m
o
d
el
is
h
i
g
h
l
y
n
o
n
li
n
ea
r
an
d
th
e
p
r
o
ce
s
s
o
u
t
lin
ed
in
[
1
2
]
h
as
b
ee
n
u
s
ed
to
aid
i
n
d
esi
g
n
.
B
u
ck
-
B
o
o
s
t
co
n
v
er
ter
f
o
r
P
FC
[
1
3
]
w
as
u
s
ed
as
a
p
o
w
er
f
ac
to
r
co
r
r
ec
to
r
h
er
e.
I
n
th
is
p
ap
er
,
r
esu
lts
f
o
r
SR
M
d
r
iv
e
s
y
s
te
m
u
s
ed
w
i
th
b
o
th
d
io
d
e
b
r
i
d
g
e
co
n
v
er
ter
an
d
w
ith
B
u
c
k
-
B
o
o
s
t
co
n
v
er
ter
ar
e
co
m
p
ar
ed
.
SR
M
w
it
h
d
if
f
er
en
t
co
n
d
itio
n
s
li
k
e
SR
M
at
s
tar
ti
n
g
co
n
d
itio
n
s
,
co
n
s
tan
t
DC
li
n
k
v
o
ltag
e,
s
tep
c
h
an
g
e
i
n
DC
li
n
k
v
o
ltag
e
a
n
d
SR
M
w
i
th
s
te
p
v
ar
iatio
n
in
AC
v
o
ltag
e
ar
e
d
is
c
u
s
s
ed
i
n
th
is
p
ap
er
w
ith
Ma
t
lab
/Si
m
u
lin
k
m
o
d
els an
d
r
esu
lt
s
.
2.
O
P
E
RAT
I
O
N
O
F
SRM
L
i
k
e
al
l
o
t
h
er
elec
tr
ical
m
ac
h
i
n
es,
SR
M
al
s
o
co
n
s
is
t
s
o
f
a
s
t
ato
r
an
d
a
r
o
to
r
.
Stato
r
o
f
SR
M
co
n
s
is
t
s
of
w
in
d
i
n
g
s
b
u
t
r
o
to
r
w
ill
n
o
t
h
av
e
a
n
y
w
in
d
i
n
g
s
o
n
i
t.
R
o
t
o
r
o
f
SR
M
co
n
s
is
t
s
o
f
j
u
s
t
s
te
el
la
m
i
n
atio
n
s
li
k
e
s
alien
t
p
o
les.
Stato
r
p
o
les
ar
e
also
s
alien
t
t
y
p
e
an
d
th
u
s
SR
M
ca
n
b
e
ca
lled
as
d
o
u
b
ly
s
a
l
ien
t
t
y
p
e
m
ac
h
in
e.
SR
M
w
o
r
k
s
o
n
b
asic
p
r
in
cip
l
e
o
f
o
p
er
atio
n
w
h
en
a
p
air
o
f
s
tato
r
p
o
les
is
ex
cited
th
e
r
o
t
o
r
ten
d
s
to
alig
n
i
n
th
e
d
ir
ec
tio
n
o
f
lo
w
r
el
u
cta
n
c
e
p
ath
p
r
o
v
id
ed
b
y
s
ta
to
r
p
o
l
es.
T
h
u
s
b
y
s
eq
u
e
n
tial
s
w
i
tch
in
g
o
f
s
tato
r
p
o
les,
r
o
to
r
ten
d
s
to
r
o
tate
p
r
o
d
u
cin
g
to
r
q
u
e.
T
h
is
p
r
o
d
u
ce
d
to
r
q
u
e
is
ca
lled
r
elu
cta
n
ce
to
r
q
u
e
s
in
ce
th
e
r
o
tatio
n
i
s
p
r
o
d
u
ce
d
d
u
e
to
r
elu
ctan
ce
.
T
h
e
r
o
tatio
n
o
f
r
o
to
r
d
ep
en
d
s
o
n
th
e
s
w
itc
h
i
n
g
s
eq
u
en
ce
o
f
ex
citatio
n
to
th
e
s
tato
r
p
o
les.
T
o
r
ed
u
ce
th
e
co
m
p
lex
it
y
o
f
m
a
g
n
et
ic
lo
ck
in
g
t
h
e
n
u
m
b
er
o
f
r
o
to
r
p
o
les
s
h
o
u
ld
b
e
d
if
f
er
en
t
to
th
at
o
f
s
t
ato
r
.
A
s
i
m
p
le
6
/4
SR
M
is
s
h
o
w
n
i
n
Fig
u
r
e
1
.
SR
M
in
its
o
p
er
atio
n
co
n
s
is
t
s
o
f
t
w
o
r
o
to
r
p
o
s
itio
n
s
al
ig
n
ed
p
o
s
itio
n
a
n
d
u
n
al
ig
n
ed
p
o
s
itio
n
o
f
r
o
to
r
.
W
h
en
t
h
e
s
tato
r
p
air
o
f
p
o
les
ar
e
ex
cited
,
p
r
o
d
u
ce
s
f
l
u
x
an
d
r
o
to
r
ten
d
s
to
ali
g
n
to
lo
w
r
elu
ctan
c
e
p
ath
ca
lled
alig
n
ed
p
o
s
itio
n
o
f
r
o
to
r
.
Un
alig
n
ed
p
o
s
itio
n
i
s
th
e
p
o
s
itio
n
o
f
r
o
to
r
w
h
e
n
t
h
e
r
o
to
r
p
o
le
ax
is
is
n
o
t
s
a
m
e
a
s
s
tato
r
p
o
le
ax
is
.
A
l
i
g
n
ed
a
n
d
u
n
alig
n
ed
p
o
s
itio
n
s
o
f
r
o
to
r
ar
e
s
h
o
w
n
in
Fig
u
r
e
2
an
d
Fig
u
r
e
3
r
esp
ec
tiv
el
y
.
Fig
u
r
e
1
.
B
asic d
iag
r
a
m
o
f
S
R
M
w
it
h
6
/4
p
o
le
V
d
c
Fig
u
r
e
2
.
B
asic A
li
g
n
ed
r
o
to
r
p
o
s
itio
n
V
d
c
Fig
u
r
e
3
.
B
asic U
n
ali
g
n
ed
r
o
to
r
p
o
s
itio
n
3.
SRM
CO
NVERT
E
R
T
o
d
r
iv
e
SR
M,
a
co
n
v
er
ter
is
n
ee
d
ed
an
d
in
t
h
is
p
ap
er
a
s
im
p
le
as
y
m
m
etr
ical
co
n
v
er
ter
s
h
o
w
n
i
n
Fig
u
r
e
4
is
em
p
lo
y
ed
.
T
h
is
a
s
y
m
m
etr
ical
co
n
v
er
ter
co
n
tin
u
o
u
s
l
y
s
w
i
tch
e
s
th
e
p
h
a
s
es
o
f
s
tato
r
an
d
th
u
s
t
h
e
r
o
to
r
co
n
tin
u
o
u
s
l
y
r
o
tates.
Fi
g
u
r
e
4
s
h
o
w
s
t
h
e
b
asic
ci
r
c
u
it
o
f
as
y
m
m
e
tr
ical
co
n
v
er
ter
to
d
r
iv
e
SR
M.
B
y
p
r
o
p
er
ly
s
w
itc
h
i
n
g
th
e
s
w
itc
h
es
i
n
co
n
v
er
ter
,
th
e
p
h
ase
o
f
S
R
M
w
il
l
b
e
ex
cited
a
n
d
h
en
ce
r
o
to
r
r
o
tates.
C
o
n
tr
o
lli
n
g
t
h
e
s
w
itc
h
i
n
g
o
p
er
atio
n
co
n
tr
o
ls
th
e
S
R
M.
S
w
it
ch
in
g
o
n
s
w
i
tch
e
s
S1
an
d
S2
en
er
g
ize
s
p
h
ase
-
A
o
f
S
R
M
a
n
d
s
i
m
ilar
l
y
b
y
p
r
o
p
er
s
w
itc
h
in
g
s
w
itc
h
es
S3
,
S4
a
n
d
S5
,
S6
e
n
er
g
ize
s
p
h
a
s
es B
an
d
C
r
e
s
p
ec
tiv
el
y
.
Fo
r
cu
r
r
en
t
co
n
tr
o
l
m
o
d
e,
lo
w
er
s
w
itc
h
i
n
leg
w
ill
b
e
t
u
r
n
ed
ON
co
n
ti
n
u
o
u
s
l
y
s
w
itc
h
in
g
u
p
p
er
s
w
i
tch
th
r
o
u
g
h
t
h
e
o
p
er
atio
n
o
f
o
n
e
p
h
ase.
T
h
u
s
a
3
-
p
h
a
s
e
6
/4
p
o
le
SR
M
o
p
er
ates.
Evaluation Warning : The document was created with Spire.PDF for Python.
I
J
PEDS
I
SS
N:
2
0
8
8
-
8
694
Desig
n
a
n
d
S
imu
la
tio
n
o
f P
F
C
C
o
n
ve
r
ter fo
r
B
r
u
s
h
less
S
R
M Drive
(
M.
R
a
ma
S
u
b
b
a
mma
)
627
P
h
a
s
e
a
P
h
a
s
e
b
P
h
a
s
e
c
V
d
c
S
1
S
2
D
1
D
2
S
3
S
4
D
4
D
3
S
5
S
6
D
6
D
5
Fig
u
r
e
4
.
A
s
y
m
m
etr
ical
co
n
v
e
r
ter
o
f
6
/4
p
o
le
SR
M
Dr
iv
e
4.
DIOD
E
B
RID
G
E
RE
CT
I
F
I
E
R
F
E
D
S
RM
DRIVE
A
s
i
m
p
le
b
lo
ck
d
ia
g
r
a
m
o
f
S
R
M
d
r
iv
e
i
s
s
h
o
w
n
i
n
Fi
g
u
r
e
5
.
T
h
e
in
p
u
t
AC
s
u
p
p
l
y
is
f
e
d
to
d
io
d
e
b
r
id
g
e
r
ec
tif
ier
w
h
ic
h
co
n
v
e
r
ts
AC
-
DC
.
A
ca
p
ac
ito
r
is
co
n
n
ec
ted
at
th
e
o
u
tp
u
t
o
f
r
e
ctif
ier
to
m
ai
n
tai
n
co
n
s
ta
n
t
D
C
v
o
ltag
e
a
t
t
h
e
i
n
p
u
t
o
f
a
s
y
m
m
etr
ical
co
n
v
er
ter
.
T
h
e
d
io
d
e
b
r
i
d
g
e
r
ec
tif
ier
i
n
d
u
ce
s
h
ar
m
o
n
ics
i
n
th
e
s
y
s
te
m
at
t
h
e
s
o
u
r
ce
s
id
e
g
i
v
i
n
g
less
ef
f
icie
n
c
y
,
s
o
n
e
ed
s
to
b
e
co
n
tr
o
lled
.
B
u
ck
-
B
o
o
s
t
co
n
v
er
ter
f
o
r
p
o
w
er
f
ac
to
r
co
r
r
ec
tio
n
s
h
o
w
n
i
n
Fi
g
u
r
e
6
is
u
s
ed
f
o
r
m
iti
g
ati
n
g
p
o
w
er
q
u
alit
y
.
B
u
ck
-
B
o
o
s
t
co
n
v
er
ter
co
n
s
is
ts
o
f
t
w
o
n
u
m
b
er
o
f
MO
SF
E
T
s
w
itc
h
es a
n
d
w
it
h
co
n
tr
o
l stra
teg
y
f
o
r
P
FC
g
i
v
es
h
i
g
h
ef
f
icien
c
y
.
S
R
M
C
o
n
v
e
r
t
e
r
S
R
M
M
o
t
o
r
D
i
o
d
e
b
r
i
d
g
e
r
e
c
t
i
f
i
e
r
L
C
6
/
4
P
o
l
e
S
R
M
M
o
t
o
r
Fig
u
r
e
5
.
B
lo
ck
d
iag
r
a
m
o
f
S
R
M
Dr
iv
e
S
R
M
C
o
n
v
e
r
t
e
r
S
R
M
M
o
t
o
r
B
u
c
k
-
B
o
o
s
t
C
o
n
v
e
r
t
e
r
L
C
6
/
4
P
o
l
e
S
R
M
M
o
t
o
r
Fig
u
r
e
6
.
P
r
o
p
o
s
ed
SR
M
d
r
iv
e
5.
DE
S
I
G
N
O
F
B
UCK
-
B
O
O
S
T
CO
NVE
RT
E
R
B
u
ck
-
B
o
o
s
t
co
n
v
er
ter
a
s
s
h
o
w
n
i
n
Fig
u
r
e
5
(
a)
,
B
u
ck
-
B
o
o
s
t
co
n
v
er
ter
s
w
i
tch
is
ON
a
s
s
h
o
w
n
i
n
Fig
u
r
e
5
(
b
)
,
B
u
ck
-
B
o
o
s
t
co
n
v
er
ter
s
w
itc
h
i
s
OFF
a
s
s
h
o
w
n
in
Fi
g
u
r
e
5
(
c)
,
an
d
w
a
v
e
f
o
r
m
s
s
h
o
w
i
n
g
v
o
lta
g
e
o
u
tp
u
t
w
it
h
ch
a
n
g
e
in
i
n
d
u
c
to
r
cu
r
r
en
t a
lo
n
g
w
it
h
ch
a
n
g
e
in
ca
p
ac
ito
r
v
o
ltag
e
as s
h
o
w
n
i
n
Fig
u
r
e
7
.
L
V
i
n
S
D
C
R
V
o
I
i
n
I
0
Fig
u
r
e
5
(
a)
.
B
u
ck
-
B
o
o
s
t
co
n
v
er
ter
Evaluation Warning : The document was created with Spire.PDF for Python.
I
SS
N
:
2088
-
8
694
IJ
PEDS
Vo
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7
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No
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3
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3
7
628
w
h
e
n
s
w
itc
h
is
O
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L
V
i
n
C
R
Fig
u
r
e
5
(
b
)
.
B
u
ck
-
B
o
o
s
t
co
n
v
er
ter
s
w
itc
h
is
ON
;
(
1
)
w
h
e
n
S is
OF
F
L
C
R
I
Fig
u
r
e
5
(
c)
.
B
u
ck
-
B
o
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2088
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