.Modelica.Electrical.Machines.Losses.InductionMachines.PermanentMagnetLosses .Modelica.Electrical.Machines.Losses.InductionMachines.PermanentMagnetLossesPermanent magnet losses are modeled dependent on current and speed.
The permanent magnet losses are modeled such way that they do not cause a voltage drop in the electric circuit. Instead, the dissipated losses are considered through an equivalent braking torque at the shaft.
The permanent magnet loss torque is
tau = PRef/wRef * (c + (1 - c) * (i/IRef)^power_I) * (w/wRef)^power_w
where i is the current of the machine and
w is the actual angular velocity. The parameter
c designates the part of the permanent magnet losses
that are present even at current = 0, i.e. independent of current.
The dependency of the permanent magnet loss torque on the stator
current is modeled by the exponent power_I. The
dependency of the permanent magnet loss torque on the angular
velocity is modeled by the exponent power_w.
Permanent magnet loss parameters
If it is desired to neglect permanent magnet losses, set
strayLoadParameters.PRef = 0 (this is the
default).