Basic fundamental wave components
Basic components of the FundamentalWave library for modeling magnetic circuits. Machine specific components are located at Machines.Components.
Extends from Modelica.Icons.Package (Icon for standard packages).
Name | Description |
---|---|
Ground | Magnetic ground |
Reluctance | Salient reluctance |
Permeance | Salient Permeance |
EddyCurrent | Constant loss model under sinusoidal magnetic conditions |
SinglePhaseElectroMagneticConverter | Single-phase electromagnetic converter |
PolyphaseElectroMagneticConverter | Polyphase electromagnetic converter |
Idle | Idle running branch |
Short | Short cut branch |
Crossing | Crossing of two branches |
Magnetic ground
Grounding of the complex magnetic potential. Each magnetic circuit has to be grounded at least one point of the circuit.
Name | Description |
---|---|
port_p | Complex magnetic port |
Salient reluctance
The salient reluctance models the relationship between the complex magnetic potential difference and the complex magnetic flux ,
which can also be expressed in terms complex phasors:
Extends from Magnetic.FundamentalWave.Interfaces.TwoPort (Two magnetic ports for textual modeling).
Name | Description |
---|---|
R_m | Magnetic reluctance in d=re and q=im axis |
Name | Description |
---|---|
port_p | Positive magnetic port of fundamental wave machines |
port_n | Negative magnetic port of fundamental wave machines |
Salient Permeance
The salient permeance models the relationship between the complex magnetic potential difference and the complex magnetic flux :
Extends from Magnetic.FundamentalWave.Interfaces.TwoPort (Two magnetic ports for textual modeling).
Name | Description |
---|---|
G_m | Magnetic permeance in d=re and q=im axis |
Name | Description |
---|---|
port_p | Positive magnetic port of fundamental wave machines |
port_n | Negative magnetic port of fundamental wave machines |
Constant loss model under sinusoidal magnetic conditions
The eddy current loss model with respect to fundamental wave effects is designed in accordance to FluxTubes.Basic.EddyCurrent.
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 electromagnetic 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.
Extends from Magnetic.FundamentalWave.Interfaces.TwoPort (Two magnetic ports for textual modeling), Modelica.Thermal.HeatTransfer.Interfaces.PartialElementaryConditionalHeatPort (Partial model to include a conditional HeatPort in order to dissipate losses, used for textual modeling, i.e., for elementary models).
Name | Description |
---|---|
G | Equivalent symmetric loss conductance [S] |
useHeatPort | = true, if heatPort is enabled |
T | Fixed device temperature if useHeatPort = false [K] |
Name | Description |
---|---|
port_p | Positive magnetic port of fundamental wave machines |
port_n | Negative magnetic port of fundamental wave machines |
heatPort | Optional port to which dissipated losses are transported in form of heat |
Single-phase electromagnetic converter
The single-phase winding has an effective number of turns, and a respective orientation of the winding, . The current in winding is .
The total complex magnetic potential difference of the single-phase winding is determined by:
In this equation the magnetomotive force is aligned with the orientation of the winding.
The voltage induced in the winding depends on the cosine between the orientation of the winding and the angle of the complex magnetic flux. Additionally, the magnitudes of the induced voltages are proportional to the respective number of turns. This relationship can be modeled by means of
The single-phase electromagnetic converter is a special case of the PolyphaseElectroMagneticConverter
PolyphaseElectroMagneticConverter
Name | Description |
---|---|
effectiveTurns | Effective number of turns |
orientation | Orientation of the resulting fundamental wave V_m phasor [rad] |
Name | Description |
---|---|
pin_p | Positive pin |
pin_n | Negative pin |
port_p | Positive complex magnetic port |
port_n | Negative complex magnetic port |
Polyphase electromagnetic converter
Each phase of an phase winding has an effective number of turns, and an respective winging angle and a phase current .
The total complex magnetic potential difference of the polyphase winding is determined by:
In this equation each contribution of a winding magnetomotive force on the total complex magnetic potential difference is aligned with the respective orientation of the winding.
The voltages induced in each winding depend on the cosines between the orientation of the winding and the angle of the complex magnetic flux. Additionally, the magnitudes of the induced voltages are proportional to the respective number of turns. This relationship can be modeled by means of
for and is also illustrated by the following figure:
SinglePhaseElectroMagneticConverter
Name | Description |
---|---|
m | Number of phases |
effectiveTurns[m] | Effective number of turns |
orientation[m] | Orientation of the resulting fundamental wave field phasor [rad] |
Name | Description |
---|---|
plug_p | Positive plug |
plug_n | Negative plug |
port_p | Positive complex magnetic port |
port_n | Negative complex magnetic port |
Idle running branch
This is a simple idle running branch.
Extends from Magnetic.FundamentalWave.Interfaces.TwoPort (Two magnetic ports for textual modeling).
Name | Description |
---|---|
port_p | Positive magnetic port of fundamental wave machines |
port_n | Negative magnetic port of fundamental wave machines |
Short cut branch
This is a simple short cut branch.
Extends from Magnetic.FundamentalWave.Interfaces.TwoPortElementary (Two magnetic ports for graphical modeling).
Name | Description |
---|---|
port_p | Positive magnetic port of fundamental wave machines |
port_n | Negative magnetic port of fundamental wave machines |
Crossing of two branches
This is a simple crossing of two branches. The ports port_p1
and port_p2
are connected, as well as port_n1
and port_n2
.
Name | Description |
---|---|
port_p1 | Positive port_p1 connected with port_p2 |
port_p2 | Positive port_p2 connected with port_p1 |
port_n1 | Negative port_n1 connected with port_n2 |
port_n2 | Negative port_n2 connected with port_n1 |