Package Modelica.Magnetic.FluxTubes.Examples.UtilitiesUtilities to be used in examples
Package Modelica.Magnetic.FluxTubes.Examples.Utilities
This icon indicates a package containing utility classes.
Extends from Modelica.Icons.UtilitiesPackage (Icon for utility packages).
| Name | Description |
|---|---|
CoilDesign | Calculation of winding parameters (wire diameter, number of turns et al.) and recalculation with optionally chosen parameters; to be adapted to particular design tasks |
TranslatoryArmatureAndStopper | Mass with free travel between two stoppers |
Model Modelica.Magnetic.FluxTubes.Examples.Utilities.TranslatoryArmatureAndStopper
In translatory actuators with limited stroke, the armature with its inertia can travel between two stoppers.
| Type | Name | Default | Description |
|---|---|---|---|
Length | L | Length of component from left flange to right flange (= flange_b.s - flange_a.s) | |
Mass | m | Armature mass | |
TranslationalSpringConstant | c | Spring stiffness between impact partners | |
TranslationalDampingConstant | d | Damping coefficient between impact partners | |
Real | n | 2 | Exponent of spring forces (f_c = c*|s_rel|^n) |
Position | x_max | Position of stopper at maximum armature position | |
Position | x_min | Position of stopper at minimum armature position |
| Type | Name | Description |
|---|---|---|
Flange_a | flange_a | |
Flange_b | flange_b |
Record Modelica.Magnetic.FluxTubes.Examples.Utilities.CoilDesign
This model example shows dimensioning of a winding (wire diameter, number of turns) based on desired operating conditions (voltage, temperature, current density, conductor filling factor) for a given cross-section area of the winding. It can be modified according to the parameters given and sought after for a particular design project.
The calculated winding resistance and number of turns can be used as input parameters to the electrical subsystem of a device to be modelled. Operating voltage V_op can be minimum, nominal and maximum voltage respectively as specified for a particular design project. In conjunction with the setting of the operating temperature T_op, this enables for analysis of the device under worst-case conditions (e.g., minimum required magnetomotive force, maximum allowed ohmic losses, minimum and maximum force respectively).
For manufacturing of a winding, the obtained wire diameter d_wireCalculated must be rounded to that of an available wire. In order to analyse the influence of this rounding, one can enter the chosen wire diameter d_wireChosen and number of turns N_chosen as optional input. Calculation of the resulting winding parameters enables for comparison with the ones obtained otherwise.
Extends from Modelica.Icons.Record (Icon for records).
| Type | Name | Description |
|---|---|---|
parameter Resistivity | rho_20 | Resistivity of conductor material at 20 degC (default: Copper) |
parameter LinearTemperatureCoefficient | alpha_20 | Temperature coefficient of conductor material's resistivity at 20 degC (default: Copper) |
parameter Temperature | T_op | Operating temperature of winding |
parameter Resistivity | rho | Resistivity at operating temperature |
parameter Length | h_w | Height of winding cross-section |
parameter Length | b_w | Width of winding cross-section |
parameter Area | A_w | Cross-section area of winding |
parameter Length | l_avg | Average length of one turn |
parameter Voltage | V_op | Operating voltage (nominal/ minimum/ maximum voltage depending on design objective) |
parameter CurrentDensity | J_desired | DESIRED current density at operating temperature and voltage resp. |
parameter Real | c_condFillChosen | CHOSEN conductor filling factor = total conductor area without insulation/ total winding area |
parameter Real | N_calculated | CALCULATED number of turns |
parameter Diameter | d_wireCalculated | CALCULATED wire diameter (without insulation) |
parameter Area | A_wireCalculated | Calculated wire cross-section area |
parameter Resistance | R_calculated | Winding resistance at operating temperature and voltage resp. with CALCULATED number of turns and wire diameter |
parameter Power | P_calculated | Winding's ohmic losses at operating temperature and voltage resp. with CALCULATED number of turns and wire diameter |
parameter Diameter | d_wireChosen | CHOSEN available wire diameter (without insulation) |
parameter Real | N_chosen | CHOSEN number of turns |
parameter Area | A_wireChosen | Wire cross-section area resulting from CHOSEN wire diameter |
parameter Resistance | R_actual | Winding resistance at operating temperature and voltage resp. resulting from CHOSEN number of turns and wire diameter |
parameter Power | P_actual | Winding's ohmic losses at operating temperature and voltage resp. resulting from CHOSEN number of turns and wire diameter |
parameter CurrentDensity | J_actual | Current density at operating temperature and voltage resp. resulting from CHOSEN number of turns and wire diameter |
parameter Real | c_condFillActual | Conductor filling factor resulting from CHOSEN number of turns and wire diameter |