Modelica.Magnetic.FluxTubes.Examples.Utilities

Utilities to be used in examples

Information

Extends from Modelica.Icons.UtilitiesPackage (Icon for utility packages).

Package Content

Name Description
Modelica.Magnetic.FluxTubes.Examples.Utilities.TranslatoryArmatureAndStopper TranslatoryArmatureAndStopper Mass with free travel between two stoppers
Modelica.Magnetic.FluxTubes.Examples.Utilities.CoilDesign 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.TranslatoryArmatureAndStopper Modelica.Magnetic.FluxTubes.Examples.Utilities.TranslatoryArmatureAndStopper

Mass with free travel between two stoppers

Information

In translatory actuators with limited stroke, the armature with its inertia can travel between two stoppers.

Parameters

NameDescription
LLength of component from left flange to right flange (= flange_b.s - flange_a.s) [m]
mArmature mass [kg]
cSpring stiffness between impact partners [N/m]
dDamping coefficient between impact partners [N.s/m]
nExponent of spring forces (f_c = c*|s_rel|^n)
x_maxPosition of stopper at maximum armature position [m]
x_minPosition of stopper at minimum armature position [m]

Connectors

NameDescription
flange_a 
flange_b 

Modelica.Magnetic.FluxTubes.Examples.Utilities.CoilDesign Modelica.Magnetic.FluxTubes.Examples.Utilities.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

Information

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).

Parameters

NameDescription
rho_20Resistivity of conductor material at 20 degC (default: Copper) [Ohm.m]
alpha_20Temperature coefficient of conductor material's resistivity at 20 degC (default: Copper) [1/K]
T_opOperating temperature of winding [K]
h_wHeight of winding cross-section [m]
b_wWidth of winding cross-section [m]
l_avgAverage length of one turn [m]
V_opOperating voltage (nominal/ minimum/ maximum voltage depending on design objective) [V]
J_desiredDESIRED current density at operating temperature and voltage resp. [A/m2]
c_condFillChosenCHOSEN conductor filling factor = total conductor area without insulation/ total winding area
Chosen feasible parameters (optional)
d_wireChosenCHOSEN available wire diameter (without insulation) [m]
N_chosenCHOSEN number of turns
Automatically generated Thu Dec 19 17:20:03 2019.