DC
1.2
U (V)
29.71
24.75
19.79
14.82
9.87
4.91
No-load voltage as a function of speed
35
30
Speed (rpm)
N (rpm)
1500
1250
1000
750
500
250
25
20
15
10
5
0
0
200
400
600
800
1000
1200
1400
Voltage (V)
1.3 Increasing
I (A)
U (V)
0
-6.11
0.09
-70.5
0.18
-138.9
0.27
-198.2
0.36
-243.5
1.3 Decreasing
I (A)
U (V)
0.36
-243.5
0.27
-200.5
0.18
-142.5
0.09
-74.5
0
-7.02
No-load voltage as a function of excitation current
0
0
0.1
0.2
0.3
0.4
Voltage (V)
-50
-100
-150
Increasing
Decreasing
-200
-250
-300
Current (A)
The decreasing field current curve results in a slightly higher voltage output. This higher output can
be explained by the electric field that is created by the voltage. This fields exerts a force on the
electrical charge. This force is general small, but visible in the graph as the higher output voltage of
the decreasing field current.
1600