WOLFRAM SYSTEMMODELER

EddyCurrent

Constant loss model under sinusoidal magnetic conditions

Wolfram Language

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SystemModel["Modelica.Magnetic.QuasiStatic.FundamentalWave.Components.EddyCurrent"]
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Information

This information is part of the Modelica Standard Library maintained by the Modelica Association.

The eddy current loss model with respect to fundamental wave effects is designed in accordance to FluxTubes.Basic.EddyCurrent and FundamentalWave.Components.EddyCurrent.

  .

Fig. 1: equivalent models of eddy current losses

Due to the nature of eddy current losses, which can be represented by symmetric conductors in an equivalent electric circuit (Fig. 1), the respective number of phases has to be taken into account. Assume that the conductances of the equivalent circuit are , the conductance for the eddy current loss model is determined by

  

where is the number of turns of the symmetric electro magnetic coupling.

For such an phase system the relationship between the voltage and current space phasors and the magnetic flux and magnetic potential difference phasor is

  ,
  ,

where and are the phase voltages and currents, respectively.

The dissipated loss power

  

can be determined for the space phasor relationship of the voltage and current space phasor.

See also

FluxTubes.Basic.EddyCurrent

Parameters (3)

useHeatPort

Value: false

Type: Boolean

Description: =true, if heatPort is enabled

T

Value: 273.15

Type: Temperature (K)

Description: Fixed device temperature if useHeatPort = false

G

Value:

Type: Conductance (S)

Description: Equivalent symmetric loss conductance

Connectors (3)

port_p

Type: PositiveMagneticPort

Description: Positive quasi-static magnetic port of fundamental wave machines

port_n

Type: NegativeMagneticPort

Description: Negative quasi-static magnetic port of fundamental wave machines

heatPort

Type: HeatPort_a

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

Components (3)

V_m

Type: ComplexMagneticPotentialDifference

Description: Complex magnetic potential difference

Phi

Type: ComplexMagneticFlux

Description: Complex magnetic flux

j

Type: Complex

Used in Examples (1)

EddyCurrentLosses

Modelica.Magnetic.QuasiStatic.FundamentalWave.Examples.Components

Comparison of equivalent circuits of eddy current loss models

Used in Components (1)

SymmetricMultiPhaseWinding

Modelica.Magnetic.QuasiStatic.FundamentalWave.BasicMachines.Components

Symmetric winding model coupling electrical and magnetic domain