xi
Figure 46 Parameter variation during 75 hp motor start..........................................................71
Figure 47 Simulation of 50 hp motor during a motor start including mutual flux path
saturation effects and omitting mutual flux path saturation effects.................................72
Figure 48 Simulated and measured current and voltage resulting from a 50 hp motor start.
The simulated voltage includes the line impedance model. ............................................74
Figure 49 Measured and simulated speed following a 10 hp motor stop using load inertia I1
and I3 ...............................................................................................................................76
Figure 50 Measured and simulated shaft torque following a 10 hp motor stop using load
inertia I1 ...........................................................................................................................77
Figure 51 Measured and simulated speed data for two 50 hp load inertia cases, I1 and I3.
The parameter estimation data is I1 and the validation data is I3. Note that the measured
and simulated curves lay on top of each other for both load inertia cases. .....................78
Figure 52 Measured and simulated torque following a 50 hp motor stop using load inertia I1
.........................................................................................................................................79
Figure 53 Measured and simulated speed following a 75 hp motor stop using load inertia I1
and I3 ...............................................................................................................................80
Figure 54 Measured and simulated shaft torque following a 10 hp motor stop using load
inertia I1 and I3................................................................................................................80
Figure 55 Measured and simulated speed data during a motor start for the 10 hp motor using
load inertia I1. 1 standard motor model with motor manufacturer parameters, 2
standard motor model with estimated parameters, 3 non-linear motor model with
estimated ..........................................................................................................................82
Figure 56 Simulated and measured stator current in Phase C during a 10 hp motor start using
the non-linear motor model and the standard motor model.............................................83
Figure 57 Simulated and measured shaft torque resulting from a 10 hp motor start using the
non-linear motor model and the standard motor model...................................................84
Figure 58 Measured and simulated speed data during a motor start for the 50 hp motor using
load inertia I1. 1 standard motor model with motor manufacturer parameters, 2
standard motor model with estimated parameters, 3 non-linear motor model with
estimated. .........................................................................................................................86