•
H
j B t
E
B 0 E
0
•
B
H
j
E
2
A
A t
Rr Rm Rs Ks Im 1, 441 10 4 10
ym l
pr
7
6
•
H x ( x, 0)
K s ( x)
2
2
Az ( x, y ) x2
Az ( x, y ) y2
j2 f
0
Az ( x, y ) 0
yg
q
2
2
f
2
AA*dy 0
4
q 4
(
4
K s2 1 (1 e 4 3 cos( / 2) 4 )
2
1 f
24
4
4
cos( /2) ym /
)
arctan ( ) 2
100
2
Power Loss Density (W/m )
Specific Wavelength
25
20
15
10
backward rotating harmonics forward rotating harmonics
5
0
14
29
44
59
74
Harmonic Order
89
104
119
80
60
40
20
0
0
5
10
15
20
25
30
Specific Wavelength
35
40
45
50
1
Power Loss (p.u.)
0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0
0
20
40
60
80
100
120
Magnet Width (mm)
140
160
180
200
1
<<1
Power Loss
0.6 0.4 0.2 0 0
1.6 3.2 4.8 6.4
8
Speed
9.6 11.2 12.8 14.4 16 17.6 19.2 20.8 22.4 24 25 Speed (rad/s) >>1 Power Losses
Power Loss (p.u.)
0.8
Speed
P
Pcn
Pan
n 1
Pcn
q 2 o2 a J n2 (nps 8 n 2 ps2 Rm Rs
2 nps
2 s
2 m
pr ) 2
R R 1 (2nps 2)
Rr Rm
2
2 nps
2
Rr Rs
2 nps
Rs2 Rr2 Fn
Rr Rs
2 nps
Rs2 Rm2
Rr2
/ 1
Rr Rs
2 nps
2
q2 a
Pan Rm Rs
nps
2 o
J n2 (nps n 4 ps4 2 m
Rs R 1 (nps 2)
sin 2 ( nps ( Rm2
Rr2 ) 1
Rr Rm
2
nps 2
Rr Rs
2
nps
Rs Rr2Gn
a ) 2 2 nps
Rr Rs Rm Rr
Gn
pr ) 2
nps 2
( nps R ln m Rr
2
Rm Rr
1 2)
, nps , nps
1 1
Fn
2 nps
( 2nps ln
Rm Rr
1 2)
, nps
2
, nps
2
1
Losses (p.u.)
0.8 0.6 0.4 0.2 0 0
3.2
6.4
9.6
12.8
Speed (rad/s)
16
19.2
22.4
25
1
Losses(p.u.)
0.8 0.6 0.4 0.2 0 1
2
3
4 5 6 7 Number of segements
8
9
10
Power Loss (p.u.)
1 0.8 0.6 0.4 0.2 0 22.4
19.2
16
12.8
Speed (rad/s)
9.6
6.4
3.2
0
2 1 3 4 6 5 7 8 10 9 Number of Segments
1
Power Loss (p.u.)
0.8
0.6
0.4
0.2
0 0
10
20
30 Harmonic Order
40
50
60
ACKNOWLEDGMENT THE
WORK PRESENTED IN THIS PAPER HAS BEEN DEVELOPED WITHIN THE
THALES-DEFKALION PROJECT. THIS RESEARCH HAS BEEN COFINANCED BY THE EUROPEAN UNION (EUROPEAN SOCIAL FUND – ESF) AND GREEK NATIONAL FUNDS THROUGH THE OPERATIONAL PROGRAM "EDUCATION AND LIFELONG LEARNING" OF THE NATIONAL STRATEGIC REFERENCE FRAMEWORK (NSRF) - RESEARCH FUNDING PROGRAM: THALES: REINFORCEMENT OF THE INTERDISCIPLINARY AND/OR INTER-INSTITUTIONAL RESEARCH AND INNOVATION.
FRAMEWORK OF THE