No EMI Low Voltage AC Cables - QuickField simulation example
In NELVAC wire there are two EMI's generated, one for the currents flowing into the load and other flowing out of the load and also as they are same in magnitude the net electro magnetic interference (EMI) is reduced compared with normal wires.
How to find low EMI AC cable field cancellation?
Answer Typical applications Geometry
Given
Task
Solution
Results
Current and flux density distribution in NELVAC wire.
Engineering question
Set up a plane-parallel QuickField AC Magnetics problem for low-EMI AC cables and evaluate field cancellation from computed field results.
balanced current cables, low-EMI wiring systems, interference-suppressed power cables
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Simulation problem
Problem Type
Plane-parallel problem of AC magnetics.
Conductivity of copper σ = 58 MS/m;
Frequency f = 50 Hz.
Determine flux density at the cable surface.
The simulation was conducted and EMI fields were observed assuming the wire is in air.
Current and flux density distribution in normal wire. Flux density at the cable surface is 2 uT.
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