WOLFRAM SYSTEMMODELER

PermanentMagnetLosses

Model of permanent magnet losses dependent on current and speed

Wolfram Language

In[1]:=
SystemModel["Modelica.Electrical.Machines.Losses.InductionMachines.PermanentMagnetLosses"]
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Information

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

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).

Parameters (2)

useHeatPort

Value: false

Type: Boolean

Description: =true, if heatPort is enabled

permanentMagnetLossParameters

Value:

Type: PermanentMagnetLossParameters

Description: Permanent magnet loss parameters

Inputs (1)

is

Type: Current[m] (A)

Description: Instantaneous stator currents

Connectors (3)

flange

Type: Flange_a

Description: Shaft end

support

Type: Flange_a

Description: Housing and support

heatPort

Type: HeatPort_a

Description: Optional port to which dissipated losses are transported in form of heat

Components (1)

permanentMagnetLossParameters

Type: PermanentMagnetLossParameters

Description: Permanent magnet loss parameters

Extended by (2)

PermanentMagnet

Modelica.Magnetic.FundamentalWave.BasicMachines.Components

Permanent magnet represented by magnetic potential difference

PermanentMagnetWithLosses

Modelica.Electrical.Machines.BasicMachines.Components

Permanent magnet excitation