.Modelica.Electrical.Machines.Losses.InductionMachines.PermanentMagnetLosses

Information

Permanent 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.

See also

Permanent magnet loss parameters

If it is desired to neglect permanent magnet losses, set strayLoadParameters.PRef = 0 (this is the default).


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