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Flyback transformer EMC

magnetic field of flyback transformer, transient electromagnetic analysis

Flyback transformer is a source of high frequency electromagnetic field.

Problem type:
Axisymmetric problem of Transient magnetics

Geometry:

Given:
Ferrite permeability μ=1000,
Operation frequency f=1 kHz,
The transformer works in discontinuous mode, currents in windings are known.

Task:
Calculate the magnetic field distribution around flyback transformer during operation cycle.

Solution:
Model may be defined and solved as a Transient Magnetic Analysis problem.

Results:
Magnetic field around the flyback transformer.

Magnetic flux density 1 cm away from the flyback transformer.

* Reference: http://en.wikipedia.org/wiki/Flyback_transformer