TranslatoryArmatureAndStopper
CoilDesign
Utilities to be used in examples
Extends from Modelica.Icons.UtilitiesPackage (Icon for utility packages).
| Name | Description |
|---|---|
| TranslatoryArmatureAndStopper
|
Mass with free travel between two stoppers |
| 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 |
Modelica.Magnetic.FluxTubes.Examples.Utilities.TranslatoryArmatureAndStopperMass with free travel between two stoppers
In translatory actuators with limited stroke, the armature with its inertia can travel between two stoppers.
| Name | Description |
|---|---|
| L | Length of component from left flange to right flange (= flange_b.s - flange_a.s) [m] |
| m | Armature mass [kg] |
| c | Spring stiffness between impact partners [N/m] |
| d | Damping coefficient between impact partners [N.s/m] |
| n | Exponent of spring forces (f_c = c*|s_rel|^n) |
| x_max | Position of stopper at maximum armature position [m] |
| x_min | Position of stopper at minimum armature position [m] |
| Name | Description |
|---|---|
| flange_a | |
| flange_b |
Modelica.Magnetic.FluxTubes.Examples.Utilities.CoilDesignCalculation of winding parameters (wire diameter, number of turns et al.) and recalculation with optionally chosen parameters; to be adapted to particular design tasks
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).
| Name | Description |
|---|---|
| rho_20 | Resistivity of conductor material at 20 degC (default: Copper) [Ohm.m] |
| alpha_20 | Temperature coefficient of conductor material's resistivity at 20 degC (default: Copper) [1/K] |
| T_op | Operating temperature of winding [K] |
| h_w | Height of winding cross-section [m] |
| b_w | Width of winding cross-section [m] |
| l_avg | Average length of one turn [m] |
| V_op | Operating voltage (nominal/ minimum/ maximum voltage depending on design objective) [V] |
| J_desired | DESIRED current density at operating temperature and voltage resp. [A/m2] |
| c_condFillChosen | CHOSEN conductor filling factor = total conductor area without insulation/ total winding area |
| Chosen feasible parameters (optional) | |
| d_wireChosen | CHOSEN available wire diameter (without insulation) [m] |
| N_chosen | CHOSEN number of turns |