.Modelica.Electrical.Machines.Losses.DCMachines.Core

Information

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

where w is the actual angular velocity and v is the actual voltage. The term ratioHysteresis is the ratio of the hysteresis losses with respect to the total core losses for reference inner voltage and reference angular velocity.

For the voltage and angular velocity range with respect to Fig. 1, the dependency of total core losses on the parameter ratioHysteresis is depicted in Fig. 2.

Fig. 1: Voltage versus angular velocity

Fig. 2: Core losses versus angular velocity with parameter ratioHysteresis

Note

In the current implementation it is assumed that ratioHysteresis = 0. This parameter cannot be changed due to compatibility reasons.

See also

Core loss parameters