EMAG Tutorial 5:
Rotating Machine
EMAG Tutorial 5:
Rotating Machine
Tutorial 5
January 24, 2010
© 2010 ANSYS, Inc. All rights reserved.
ANSYS, Inc. Proprietary Inventory #003000
1-1
Training Manual
Module 5
Electromagnetic Analysis
Training
Manual
Wor
kb
• Objectives
– Set up a transient analysis of one half of
the length
of a
single periodic sector
of a
Rotor
core
kb
enc
h
-
Si
the
length
of
a
single
periodic
sector
of
a
rotating machine. Odd periodic boundary
conditions will be used to mimic
presence of adjacent periodic sectors.
–
The rotor contains a sin
g
le
p
ermanent
PM
Si
mulati
o
gp
magnet which is poled radially outward
and attached to a permeable ring.
– The stator is magnetically permeable
structure containing 3 poles. It has no
o
n Emag
coils in this exercise; a stranded
conductor option that can be used to
model coils will not be available until
version 13 .
Define 90
⁰
rotation of the rotor which
Empty
–
Define
90
⁰
rotation
of
the
rotor
which
occurs over a one second time interval.
– The PM will be electrically conductive;
eddy currents and Joule heating will be
calculated
Empty
coil
slots
Rotor
iron
January 24, 2010
© 2010 ANSYS, Inc. All rights reserved.
ANSYS, Inc. Proprietary Inventory #002406
1-2
calculated
.
– Net rotor torque will be calculated.
Training Manual
Module 5
Electromagnetic Analysis
Training
Manual
Wor
kb
• Procedure
– WB supports only
magnetostatic analyses.
Interface in air gap
kb
enc
h
-
Si
Transient analyses,
especially those including
motion effects, will require
command objects.
–
Rigid body rotation or
Mesh in direction
of motion need
not match
Si
mulati
o
Rigid
body
rotation
or
translational motion can
be simulated with an
undocumented (even in
the traditional ANSYS
e
nvir
o
nm
e
n
t)
set
o
f
o
n Emag
e o e t) set o
commands (“ARMINT”
feature).
– Insertion of command
objects that set up motion
effects is largely
effects
is
largely
automated with a special
wizard (supplied courtesy
of CADFEM).
– “Ladder mesh”
requirement will be
Mesh normal to
direction of
ti t
January 24, 2010
© 2010 ANSYS, Inc. All rights reserved.
ANSYS, Inc. Proprietary Inventory #002406
1-3
requirement
will
be
necessary to use ARMINT
feature.
mo
ti
on mus
t
match (and does)
Training Manual
Module 5
Electromagnetic Analysis
Training
Manual
Wor
kb
kb
enc
h
-
Si
Start Workbench and Read in Geometry
Si
mulati
o
Start
Workbench
and
Read
in
Geometry
o
n Emag
January 24, 2010
© 2010 ANSYS, Inc. All rights reserved.
ANSYS, Inc. Proprietary Inventory #002406
1-4
Training Manual
Module 5
Electromagnetic Analysis
Training
Manual
Wor
kb
SWkbh
kb
enc
h
-
Si
S
tart
W
or
kb
enc
h
Si
mulati
o
o
n Emag
January 24, 2010
© 2010 ANSYS, Inc. All rights reserved.
ANSYS, Inc. Proprietary Inventory #002406
1-5