See documentation of the enclosing subpackage.
The experiment could be implemented in reality by two series excited DC machines, using the negative armature current of the other machine as excitation current. Unfortunately two torque sources (current controlled electric drives) are needed.
When defining different machine parameters, the dynamics of the
machines and therefore the time scaling
machineData.tRef defined by mechanical and electrical
time constant will change and it might be necessary to adapt
StopTime and Interval in the experiment annotation.