DOCUMENTATION FOR THE RECTANGULAR SLOTTED STATOR PARAMETRIC MODEL
All parameters are to be contained in a single file whose filename
has the extention "des". (e.g., mach1.des) The first part of the
filename is the item entered in the ANSYS Input window when "GET_DIMS" is
selected from the Toolbar. When entering this filename, the characters
must be enclosed in single quotes ( e.g. 'mach1' for the
parameter file "mach1.des" ). These parameters can be combined into
a single file with the parameters for the rotor.
1) The geometry parameters related to the dimensions of the stator
are contained the plot file "rslotsta.doc". These plots can
be accessed by the DISPLAY program using the file "rslotsta.doc".
2) The parameter file can also contain the material properties:
Air Material Number 1
Stator iron Material Number 5
Stator conductor Material Number 6
If the parameter file contains material properties, enter into
the Preprocessor before selecting {GET_DIMS} from the Toolbar.
The following additional distinction for the air elements in the air
gap has been made:
Air on the rotor side of the air gap: REAL SET 5
Air on the stator side of the air gap: REAL SET 6
3) The remaining scalar parameters are defined below:
stat_id='rslotsta' The stator model type identifier. (This prevent
other model macros from using the data for the
slotted stator.)
npole = number of poles contained in the complete machine
nsp = number of stator teeth
ncons = number of phases per slot (maximum of 2)
nspgen= number of stator teeth to be generated
ggeom = the length conversion factor from the units of the
parameters to meters (for English to MKS, ggeom=.0254)
s_stk = length of stator stack
a_stk length of axial air outside the stack
mname = identification to be printed out in summaries
stref = level of mesh refinement for the stator
(1 for least refinement, 5 for greatest refinement)
s_mesh = additional coarsening of the mesh in stator (increasing values from 1 to 5
coarsens the mesh in the backiron)
WINDING DATA:
ax_clear = axial clearance of winding with the stack
coil_w = coil width
coil_h = coil height
maxslotr = maximum outer radius of the slot
NOTE:
At the completion of the stator generation, the stator elements and
nodes are contained in the component group "STATOR". This identification
is necessary for the other Toolbar items to function.
The coil elements are contained in the element component "S_COIL". This
is required for the coil to be loaded with the Toolbar.
4) Definition of the Stator Winding.
The stator winding is specified by defining the slots for each coil and
the number of turns for each coil. This data is specified in the winding
file which must have an ending of .wnd. For a winding consisting of N coils,
in the model, there are to be N lines in the winding file.
An example is shown below.
For an even periodic model, three coils are specified.
Phase A
Coil 1 Positive current enters out of Slot 1 and into SLot 4, has 10 turns
Phase B
Coil 2 Positive current enters out of Slot 2 and into SLot 5, has 10 turns
Phase C
Coil 3 Positive current enters out of Slot 3 and into SLot 6, has 10 turns
Out In Number of Phase Number of
Slot Slot turns Coils
1. 4. 10. 1. 3.
5. 2. 10. 2.
3. 6. 10. 3.
1234567890123456789012345678901234567890123456789012345678901234567890
1 2 3 4 5 6
columns definition
1-10 out slot for the coil
11-20 in slot for the coil
21-30 number of turns for this coil
31-40 phase (1,2,3,,,)
41-50 number of lines in this file to be processed (first line only)
5) Definition of the current form
This is used when the <load> is used to apply currents to the
coils
Built in Current forms:
Sine: set currform='sine' in the parameter file
Flat set currform='flat' in the parameter file
If an arbitrary input is required, it is specified through
a table "AMP_A", where the value is the current form and
the index is the electrical angle. The full electrical cycle
needs to be specified for only Phase A is required. Other phases
are obtained by offset
Phase B = Phase A + 120
Phase C = Phase A + 240
example: Square wave
If an arbitrary input is required, it is specified through
a table "AMP_A", where the value is the current form and
the index is the electrical angle. The full electrical cycle
needs to be specified for only Phase A is required. Other phases
are obtained by offset
Phase B = Phase A + 120
Phase C = Phase A + 240
example: Square wave
*set,amp_a
*dim,amp_a,table,8
amp_a(1,0)=0, 120,120,180,180,300,300,360
amp_a(1,1)=1, 1, 0, 0, -1, -1, 0, 0
*vplo,amp_a(1,0),amp_a(1,1)