balance finite element modelling of electrical machines is presented. ... of algebraic equations is derived by applying the Galerkin approach to both the space ...
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b [T]
1.2 1 0.8 0.6 0.4 0.2 0 0
2000
4000
6000
8000
10000
h [A/m]
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80 measured 60
calculated
40
voltage [V]
20
0 -20 -40 -60 -80 0
5
10 Time [ms]
15
20
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relative amplitude
0.14
phase voltage
0.12
line-to-line voltage
0.1 0.08 0.06 0.04 0.02 0 1
3
5
7
9
11
13
harmonic
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40 30
TD HB 1
20
HB 5 voltage [V]
10
5
HB 7 HB 11
0
HB 13 -10 -20 -30 -40 0
5
10 Time [ms]
15
20
38
voltage [V]
36
5
34
32
30 2
3
4
5 Time [ms]
6
7
8
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1
relative amplitude (HB/TD)
0.95
0.9 50 Hz 150 Hz
0.85
250 Hz 350 Hz
0.8
450 Hz 550 Hz 0.75 HB 1
HB 5
HB 7
HB 11
HB 13
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1 0.8
TD
0.6
HB 1
0.4
HB 5
0.2 b [T]
R
HB 7
0 -0.2
HB 11
-0.4
HB 13
-0.6 -0.8 -1 0
5
10
15
20
Time [ms]
R
b [T]
1.5
TD
1
HB 1
0.5
HB 5 HB 7
0
HB 11 -0.5
HB 13
-1 -1.5 0
5
10
15
20
Time [ms]
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0.92 0.9
TD
0.88
HB 1
0.86
HB 5
0.84 b [T]
R
HB 7
0.82 0.8
HB 11
0.78
HB 13
0.76 0.74 0.72 0
0.5
1
1.5
2
2.5
3
Time [ms]
0.626 TD 0.625
HB 1
R
b [T]
0.624
HB 5 HB 7
0.623
HB 11 0.622
HB 13
0.621 0.62 0
0.5
1
1.5
2
2.5
3
Time [ms]
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