93
For each graph in Fig 65, the measured data from the lab and the simulated data are shown.
The simulated stator voltage agrees very well with the measured stator voltage. All of the
waveforms agree well until the stator voltage is re-applied at time 0.135 s. After 0.135 s,
there is some discrepancy in the stator current, shaft torque, and speed. The most significant
difference is in the magnitude of the shaft torque negative peak, where the simulated value is
a factor of 3 less than the measured value.
-800
-400
0
400
800
i
cs
(A)
0.50
0.40
0.30
0.20
0.10
0.00
t (s)
2000
1800
1600
1400
1200
(rpm)
-800
-400
0
400
800
V
ca
(V)
-40x10
3
-30
-20
-10
0
10
T
S
(in-lb)
measured
simulated
Figure 65 Measured and simulated waveforms resulting from a 8.1 cycle momentary
service interruption of a 50 hp motor using load inertia I1
Summary :
-800 -400 0 400 800 i cs (A) 0.50 0.40 0.30 0.20 0.10 0.00 t (s) 2000 1800 1600 1400 1200 (rpm) -800 -400 0 400 800 V ca (V) -40x10 3 -30 -20 -10 0 10 T S (in-lb) measured simulated Figure 65 Measured and simulated waveforms resulting from a 8.1 cycle momentary service interruption of a 50 hp motor using load inertia I1
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measured,simulated,stator,800,400,oltage,well,shaft,alue,data,0135,torque,waeforms