WOLFRAM SYSTEM MODELER
This information is part of the Modelica Standard Library maintained by the Modelica Association.
Core losses can be separated into eddy current and hysteresis losses. The total core losses can thus be expressed as
P = PRef * (ratioHysteresis * (wRef / w) + 1 - ratioHysteresis) * (V / VRef)^2
w is the actual angular remagnetization velocity and
V is the actual voltage.
ratioHysteresis is the ratio of the hysteresis losses with respect to the total core losses for the reference voltage and frequency.
In the current implementation hysteresis losses are not considered since complex numbers are not provided in Modelica.
ratioHysteresis = 0 is set. For the voltage and frequency range with respect to Fig. 1,
the dependency of total core losses on the parameter
ratioHysteresis is depicted in Fig. 2.
The current implementation has thus the drawback over a model that considers
ratioHysteresis > 0:
|Fig. 1: Voltage versus angular velocity|
| Fig. 2: Core losses versus angular velocity with parameter
In the current implementation it is assumed that
ratioHysteresis = 0. This parameter cannot be changed due to compatibility reasons.
Description: =true, if heatPort is enabled
Description: Effective number of stator turns / effective number of rotor turns (if used as rotor core)
Type: AngularVelocity (rad/s)
Description: Remagnetization angular velocity