Litz wire losses - QuickField simulation example
Litz wire is used to reduce winding losses at high frequency. Litz wire consists of 7 insulated transposed wires.
How to find litz wire inductor losses at 100 khz?
Answer Typical applications Geometry
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Task
Solution
Results
* Reference: http://en.wikipedia.org/wiki/Litz_wire
Engineering question
Set up an axisymmetric QuickField AC Magnetics problem for a Litz-wire inductor and evaluate losses at high frequency from computed field results.
litz wire inductors, high-frequency coils, RF inductive components
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Simulation problem
Problem Type
Axisymmetric problem of AC magnetics.
Core permeability μ = 500,
Copper conductivity g=56 MS/m,
Current I=1 A (RMS).
Conductor cross-sectional area S=0.126 mm².
Frequency f=1 kHz.
Compare electric losses in the winding with solid wire and with litz wire.
Each strand wire has its own label. The connection scheme is specified in external circuit file.
Comparison of losses in solid wire and in litz wire.
Frequency [kHz]
Solid wire losses [W]
Litz wire losses [W]
0
0.09
0.09
50
0.24
0.13
100
0.66
0.25
200
1.8
0.66
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