Winding
Electromagnetic converter with ohmic and magnetic losses.
blockType: AcausalElectricPowerSystems.Passive.Winding
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Description
Block Winding It is an electromagnetic converter with a winding resistance and a scattering flux. This unit can be used as a basic component for creating transformers.
When a positive current is passed through the electrical ports of the unit, a positive magnetomotive force (MDS) is induced at the magnetic terminals.
The block is based on the following equations:
,
where:
-
— magnetomotive force (MDS) on magnetic ports, A.
-
— the number of turns of the winding.
-
— current through the winding, A.
When a positive time-varying flux is applied through the magnetic ports of the unit, a negative voltage is induced at the electrical terminals of the unit.
,
where:
-
— flow through magnetic ports, Wb.
-
— current through electrical ports, A.
-
— scattering resistance, 1/Gn.
-
— winding resistance, ohms.
-
— voltage drop at the electrical terminals of the unit, V.
-
— simulation time, s.
Optionally, the H port can be activated in this unit to account for thermal phenomena occurring in the winding (for example, changes in active resistance, reception/transmission of thermal energy to other units).
Ports
Non-directional
N — north terminal
Magnetism
The magnetic port corresponding to the northern terminal of the unit.
S — south terminal
Magnetism
The magnetic port corresponding to the southern terminal of the unit.
+ — positive
electricity
The electrical port corresponding to the positive terminal of the unit.
− — negative
electricity
The electrical port corresponding to the negative terminal of the unit.
H — H pass port:q[<br>] warm
The thermal port.
Dependencies
To activate it, select the checkbox for the Thermal port parameter.
Parameters
Number of winding turns — number of turns of the winding
10 (default)
The number of turns of the winding.
Winding resistance, Ohm — sequential resistance
1e−3 ohms (default) | a positive number
Power loss in the winding.
Leakage relaxation, 1/H — resistance to scattering flow
1e5 1/Gn (default) | a non-negative number
Loss of magnetic flux in the winding. If you don’t want to simulate a leak inside the unit Winding, set this parameter to inf.
Parallel conduction, 1/Ohm — parallel conduction
0 (default) | a non-negative number
Parallel conduction. When modeling some circuits, it may be necessary to have a small parallel conduction.
Thermal port — visibility of the thermal port
Disabled (by default) | Enabled
Select the checkbox to enable the thermal port.
The thermal port affects the losses on the winding resistance.
Resistance temperature coefficient, 1/K — temperature coefficient of resistance
0.00393 1/K (default)
The coefficient α in the equation relating resistance to temperature. The default value is for copper.
Dependencies
To use this option, check the box for the Thermal port option.
Measurement temperature, K — initial pass temperature:q[<br>] 298.15 K (default)
The temperature for which the winding parameters are specified.
Dependencies
To use this option, check the box for the Thermal port option.
Winding Thermal mass, J/K — thermal mass of the winding
100 J/K (default)
The value of the thermal mass for the winding. Thermal mass is the energy required to raise the temperature by one degree.
Dependencies
To use this option, check the box for the Thermal port option.