Stranded wire
QuickField simulation example
The wire consists of many insulated transposed strands.
Problem Type
Axisymmetric problem of AC magnetics.
Geometry
Given
Core relative permeability μ = 500,
Copper conductivity g = 56 MS/m,
Current I = 1 A (magnitude), frequency f=50 kHz.
Wire cross-section area S=0.1112 mm², number of strands w=277
Task
Calculate Joule losses in the stranded wire winding.
Solution
As the wire strands are transposed, each one carries the same current. To force this condition upon strands the same label is assigned to them. In label properties "connected in series" flag is switched on and the current value 1/w of total conductor current is specified for the strand.
Interwoven stranded wire features 2% greater length comparing to straight wire. We take this into account by increasing electric resistivity.
We will simulate only center section of the long solenoid.
Results
Current density distribution in the stranded wire.
* Reference: Wikipedia : Stranded wire
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