Rockwell Automation 1557 MEDIUM VOLTAGE AC DRIVE - Manual (Page 39)

DESCRIPTION OF OPERATION 5-21
1557-UM050F-EN-P –June 2013
Is
a
lp
h
a
Is
b
e
ta
V
E
C
T
O
R
R
O
T
A
T
O
R
S
T
A
T
O
R
V
O
L
T
A
G
E
C
A
L
C
U
L
A
T
IO
N
Is
q
(V
3
3
9
)
Is
d
(V
3
3
8
)
S
lip
fr
e
q
u
e
n
c
y
(V
3
4
3
)
F
lx
f
ro
m
c
u
rr
e
n
t
(V
3
4
1
T
r
o
to
r
(P
1
3
2
)
L
m
a
g
n
e
ti
z
in
g
(P
1
3
1
)
R
O
T
O
R
F
L
U
X
C
A
L
C
U
L
A
T
IO
N
F
D
B
K
S
E
L
E
C
T
X
+
Y
2
2
S
ta
to
r
fr
e
q
u
e
n
c
y
(V
3
3
7
)
F
lx
f
ro
m
v
o
lt
a
g
e
(V
3
4
2
S
p
e
e
d
fe
e
d
b
a
c
k
(V
2
5
9
)
F
lu
x
fe
e
d
b
a
c
k
R
S
ta
to
r
(P
1
2
9
)
L
t
o
ta
l
le
a
k
a
g
e
(P
1
3
0
)
I
s
ta
to
r
(V
3
4
0
)
V
s
ta
to
r
(V
3
4
4
)
F
lu
x
f
e
e
d
b
a
c
k
(V
3
0
6
)
T
o
rq
u
e
(V
3
4
5
)
M
o
to
r
p
o
w
e
r
(V
3
4
6
)
Motor Model