WOLFRAM SYSTEM MODELER
This information is part of the Modelica Standard Library maintained by the Modelica Association.
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
i is the current of the machine and
w is the actual angular velocity.
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
The dependency of the permanent magnet loss torque on the angular velocity is modeled by the exponent
If it is desired to neglect permanent magnet losses, set
strayLoadParameters.PRef = 0 (this is the default).
Description: =true, if heatPort is enabled
Description: Permanent magnet loss parameters
Description: Instantaneous stator currents
Permanent magnet model without intrinsic reluctance, represented by magnetic potential difference