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Main >> Applications >> Sample problems

Power busses in the air above the steel plate - QuickField simulation example

This example is prepared by Dariusz Czerwinski

Engineering question

How to find magnetic field near power busbars above steel plate?

Answer
Set up a plane-parallel QuickField DC Magnetics problem for power busbars above a steel plate and evaluate magnetic field from computed field results.

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Typical applications
substation busbars, overhead busbar systems, steel support structures

Power busses in the air above the steel plate

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Simulation problem

Problem Type
Plane-parallel problem of DC magnetics.

Geometry
Power busses in the air above the steel plate Magnetic field distribution around power bus bars positioned in air above a steel plate, including the influence of the ferromagnetic plate. Air Steel Copper Copper

Given
Relative permeability of air and copper busses μ = 1;
Current density in the copper busses j = 3,000,000 A/m²;
Relative permeability of steel plate μ - non-linear:

Task
Find magnetic field distribution.

Results
Magnetic field distribution.
Magnetic field of power busses

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