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Analysis and Design of Single-Sided,
Slotted AMM Axial-Field Permanent
Magnet Machines
by
Gene Shane Liew
B.Eng (Hons) Electrical and Electronic,Adelaide University, 2003
Thesis submitted for the degree of
Doctor of Philosophy
in
School of Electrical and Electronic Engineering
University of Adelaide, Australia
August 2009
Appendix A
Motor Drive System for the32mm Motor in Chapter 3
PHOTOGRAPH of the motor drive system utilised in Chapter
3.
Page 251
Appendix A Motor Drive System for the 32mm Motor in Chapter 3
Figure A.1. PIC based motor controller
Figure A.2. Inverter module
Page 252
Appendix B
FE Simulation Results -(Mesh Size Settings)
FINITE element simulated plot graphs from section 6.2.1 are
given.
Page 253
Appendix B FE Simulation Results - (Mesh Size Settings)
B.1 Case 1
All parts auto mesh (5mm)
Figure B.1. JMAG half model Case 1, mesh view (6,465 nodes, 21,778 elements)
-25
-20
-15
-10
-5
0
5
10
15
20
25
0 100 200 300 400
Electrical Angle (deg)
Ph
as
e B
ac
k-E
MF
(V
)
-0.5
-0.4
-0.3
-0.2
-0.1
0
0.1
0.2
0.3
0.4
0.5
0 100 200 300 400
Electrical Angle (deg)
To
oth
an
d Y
oke F
lux (
mW
b)
Tooth
Yoke
Figure B.2. JMAG half model Case 1, back-EMF, tooth and yoke flux plots
-1.5
-1
-0.5
0
0.5
1
1.5
0 100 200 300 400
Electrical Angle (deg)
Co
gg
ing
To
rqu
e (
Nm
)
-1230
-1220
-1210
-1200
-1190
-1180
-1170
-1160
-1150
-1140
-1130
0 50 100 150 200 250 300 350 400
Electrical Angle (deg)
Ins
tan
tan
eo
us
Ax
ial
Fo
rce
(N
)
Figure B.3. JMAG half model Case 1, cogging torque and axial force plots
Page 254
Appendix B FE Simulation Results - (Mesh Size Settings)
B.2 Case 2
Mesh size of stator - 5mm, stator and magnet face (airgap)-1mm, other parts auto mesh
Figure B.4. JMAG half model Case 2, mesh view (18,053 nodes, 56,801 elements)
-25
-20
-15
-10
-5
0
5
10
15
20
25
0 100 200 300 400
Electrical Angle (deg)
Ph
as
e B
ac
k-E
MF
(V
)
-0.5
-0.4
-0.3
-0.2
-0.1
0
0.1
0.2
0.3
0.4
0.5
0 100 200 300 400
Electrical Angle (deg)
To
oth
an
d Y
oke F
lux (
mW
b)
Tooth
Yoke
Figure B.5. JMAG half model Case 2, back-EMF, tooth and yoke flux plots
-0.25
-0.2
-0.15
-0.1
-0.05
0
0.05
0.1
0.15
0.2
0.25
0 100 200 300 400
Electrical Angle (deg)
Co
gg
ing
To
rqu
e (
Nm
)
-1392
-1391
-1390
-1389
-1388
-1387
-1386
-1385
-1384
-1383
-1382
0 50 100 150 200 250 300 350 400
Electrical Angle (deg)
Ins
tan
tan
eo
us
Ax
ial
Fo
rce
(N
)
Figure B.6. JMAG half model Case 2, cogging torque and axial force plots
Page 255
Appendix B FE Simulation Results - (Mesh Size Settings)
B.3 Case 3
Mesh size of stator - 3mm, stator and magnet face (airgap)-1mm, other parts auto mesh
Figure B.7. JMAG half model Case 3, mesh view (21,216 nodes, 78,701 elements)
-25
-20
-15
-10
-5
0
5
10
15
20
25
0 100 200 300 400
Electrical Angle (deg)
Ph
as
e B
ac
k-E
MF
(V
)
-0.5
-0.4
-0.3
-0.2
-0.1
0
0.1
0.2
0.3
0.4
0.5
0 100 200 300 400
Electrical Angle (deg)
To
oth
an
d Y
oke F
lux (
mW
b)
Tooth
Yoke
Figure B.8. JMAG half model Case 3, back-EMF, tooth and yoke flux plots
-0.3
-0.2
-0.1
0
0.1
0.2
0.3
0 100 200 300 400
Electrical Angle (deg)
Co
gg
ing
To
rqu
e (
Nm
)
-1408
-1407
-1406
-1405
-1404
-1403
-1402
-1401
-1400
-1399
0 50 100 150 200 250 300 350 400
Electrical Angle (deg)
Ins
tan
tan
eo
us
Ax
ial
Fo
rce
(N
)
Figure B.9. JMAG half model Case 3, cogging torque and axial force plots
Page 256
Appendix B FE Simulation Results - (Mesh Size Settings)
B.4 Case 4
Mesh size of stator - 2mm, stator and magnet face (airgap)-1mm, other parts auto mesh
Figure B.10. JMAG half model Case 4, mesh view (29,804 nodes, 126,687 elements)
-25
-20
-15
-10
-5
0
5
10
15
20
25
0 100 200 300 400
Electrical Angle (deg)
Ph
as
e B
ac
k-E
MF
(V
)
-0.5
-0.4
-0.3
-0.2
-0.1
0
0.1
0.2
0.3
0.4
0.5
0 100 200 300 400
Electrical Angle (deg)
To
oth
an
d Y
oke F
lux (
mW
b)
Tooth
Yoke
Figure B.11. JMAG half model Case 4, back-EMF, tooth and yoke flux plots
-0.3
-0.2
-0.1
0
0.1
0.2
0.3
0 100 200 300 400
Electrical Angle (deg)
Co
gg
ing
To
rqu
e (
Nm
)
-1410
-1409
-1408
-1407
-1406
-1405
-1404
-1403
-1402
-1401
-1400
-1399
0 50 100 150 200 250 300 350 400
Electrical Angle (deg)
Ins
tan
tan
eo
us
Ax
ial
Fo
rce
(N
)
Figure B.12. JMAG half model Case 4, cogging torque and axial force plots
Page 257
Appendix B FE Simulation Results - (Mesh Size Settings)
B.5 Case 5
Mesh size of stator - 1mm, stator and magnet face (airgap)-1mm, other parts auto mesh
Figure B.13. JMAG half model Case 5, mesh view (88,584 nodes, 45,6312 elements)
-25
-20
-15
-10
-5
0
5
10
15
20
25
0 100 200 300 400
Rotor Angle (deg)
Ph
as
e B
ac
k-E
MF
(V
)
-0.5
-0.4
-0.3
-0.2
-0.1
0
0.1
0.2
0.3
0.4
0.5
0 100 200 300 400
Electrical Angle (deg)
To
oth
an
d Y
oke F
lux (
mW
b)
Tooth
Yoke
Figure B.14. JMAG half model Case 5, back-EMF, tooth and yoke flux plots
-0.3
-0.2
-0.1
0
0.1
0.2
0.3
0 100 200 300 400
Electrical Angle (deg)
Co
gg
ing
To
rqu
e (
Nm
)
-1410
-1409
-1408
-1407
-1406
-1405
-1404
-1403
-1402
-1401
-1400
-1399
0 50 100 150 200 250 300 350 400
Electrical Angle (deg)
Ins
tan
tan
eo
us
Ax
ial
Fo
rce
(N
)
Figure B.15. JMAG half model Case 5, cogging torque and axial force plots
Page 258
Appendix B FE Simulation Results - (Mesh Size Settings)
B.6 Case 6
Mesh size of stator - 3mm, other parts auto mesh
Figure B.16. JMAG half model Case 6, mesh view (10,878 nodes, 42,442 elements)
-25
-20
-15
-10
-5
0
5
10
15
20
25
0 100 200 300 400
Electrical Angle (deg)
Ph
as
e B
ac
k-E
MF
(V
)
-0.5
-0.4
-0.3
-0.2
-0.1
0
0.1
0.2
0.3
0.4
0.5
0 100 200 300 400
Electrical Angle (deg)
To
oth
an
d Y
oke F
lux (
mW
b)
Tooth
Yoke
Figure B.17. JMAG half model Case 6, back-EMF, tooth and yoke flux plots
-1.5
-1
-0.5
0
0.5
1
1.5
0 100 200 300 400
Electrical Angle (deg)
Co
gg
ing
To
rqu
e (
Nm
)
-1300
-1290
-1280
-1270
-1260
-1250
-1240
0 50 100 150 200 250 300 350 400
Electrical Angle (deg)
Ins
tan
tan
eo
us
Ax
ial
Fo
rce
(N
)
Figure B.18. JMAG half model Case 6, cogging torque and axial force plots
Page 259
Appendix B FE Simulation Results - (Mesh Size Settings)
B.7 Case 7
Mesh size of stator - 2mm, other parts auto mesh
Figure B.19. JMAG half model Case 7, mesh view (19,490 nodes, 85,938 elements)
-25
-20
-15
-10
-5
0
5
10
15
20
25
0 100 200 300 400
Electrical Angle (deg)
Ph
as
e B
ac
k-E
MF
(V
)
-0.5
-0.4
-0.3
-0.2
-0.1
0
0.1
0.2
0.3
0.4
0.5
0 100 200 300 400
Electrical Angle (deg)
To
oth
an
d Y
oke F
lux (
mW
b)
Tooth
Yoke
Figure B.20. JMAG half model Case 7, back-EMF, tooth and yoke flux plots
-0.6
-0.4
-0.2
0
0.2
0.4
0.6
0 100 200 300 400
Electrical Angle (deg)
Co
gg
ing
To
rqu
e (
Nm
)
-1365
-1360
-1355
-1350
-1345
-1340
-1335
0 50 100 150 200 250 300 350 400
Electrical Angle (deg)
Ins
tan
tan
eo
us
Ax
ial
Fo
rce
(N
)
Figure B.21. JMAG half model Case 7, cogging torque and axial force plots
Page 260
Appendix B FE Simulation Results - (Mesh Size Settings)
B.8 Case 8
Mesh size of stator - 1mm, other parts auto mesh
Figure B.22. JMAG half model Case 8, mesh view (85,175 nodes, 445,104 elements)
-25
-20
-15
-10
-5
0
5
10
15
20
25
0 100 200 300 400
Electrical Angle (deg)
Ph
as
e B
ac
k-E
MF
(V
)
-0.5
-0.4
-0.3
-0.2
-0.1
0
0.1
0.2
0.3
0.4
0.5
0 100 200 300 400
Electrical Angle (deg)
To
oth
an
d Y
oke F
lux (
mW
b)
Tooth
Yoke
Figure B.23. JMAG half model Case 8, back-EMF, tooth and yoke flux plots
-0.3
-0.2
-0.1
0
0.1
0.2
0.3
0 100 200 300 400
Electrical Angle (deg)
Co
gg
ing
To
rqu
e (
Nm
)
-1413
-1412
-1411
-1410
-1409
-1408
-1407
-1406
-1405
-1404
-1403
0 50 100 150 200 250 300 350 400
Electrical Angle (deg)
Ins
tan
tan
eo
us
Ax
ial
Fo
rce
(N
)
Figure B.24. JMAG half model Case 8, cogging torque and axial force plots
Page 261
Page 262
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