This example investigates the voltage versus current characteristic of an uncontrolled
electrically excited synchronous generator operated at different loads.
In each load case the phase angle phi
of the load impedance is kept constant,
but the magnitude of the impedance is varied logarithmic.
The generator is driven with constant speed.
The intention is to compare the results of the following simulation models in one plot:
phi = -45° (capacitive)
phi = -30° (capacitive)
phi = 0° (ohmic)
phi = +30° (inductive)
phi = +45° (inductive)
smee.abs_vs[1]
against smee.abs_is[1]
: RMS stator voltage against RMS stator current (of phase 1)