EddyCurrent

Constant loss model under sinusoidal magnetic conditions

    EddyCurrent

Library

Modelica/Magnetic/FundamentalWave/Components

Description

The eddy current loss model with respect to fundamental wave effects is designed in accordance toFluxTubes.Basic.EddyCurrent.

eddycurrent.png
Fig. 1: equivalent models of eddy current losses
eddycurrent_electric.png

Due to the nature of eddy current losses, which can be represented by symmetricconductors in an equivalent electric circuit (Fig. 1), the respectivenumber of phases m has to be taken into account.Assume that the m conductancesof the equivalent circuit are G_c,the conductance for the eddy current loss model is determined by

GGc

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

For such an m phase systemthe relationship between the voltage and current space phasorsand the magnetic flux and magnetic potential difference phasor is

vPhi,
iV_m,

where v_kand i_kare the phase voltages and currents, respectively.

The dissipated loss power

lossPower

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

See also

FluxTubes.Basic.EddyCurrent

Parameters

EddyCurrent_0

NameLabelDescriptionData TypeValid Values

mo_TheatPort

TheatPort

TheatPort

Structure

mo_TheatPort/fixed

fixed

Cell of scalars

true
false

mo_TheatPort/start

start

Cell of scalars

mo_G

G

Equivalent symmetric loss conductance

Scalar

mo_useHeatPort

useHeatPort

=true, if heatPort is enabled

Number

0
1

mo_T

T

Fixed device temperature if useHeatPort = false

Scalar

EddyCurrent_1

NameLabelDescriptionData TypeValid Values

mo__nmodifiers

Number of Modifiers

Specifies the number of modifiers

Number

mo__modifiers

Modifiers

Add new modifier

Structure

mo__modifiers/varname

Variable name

Cell of strings

'abs_V_m'
'arg_V_m'
'abs_Phi'
'arg_Phi'
'lossPower'

mo__modifiers/attribute

Attribute

Cell of strings

'start'
'fixed'

mo__modifiers/value

Value

Ports

NameTypeDescriptionIO TypeNumber

port_p

implicit

Positive magnetic port of fundamental wave machines

input

1

port_n

implicit

Negative magnetic port of fundamental wave machines

output

1

Port 3

implicit

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

input

mo_useHeatPort