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Flyback transformer EMC

QuickField simulation example

Flyback transformer is a source of high frequency electromagnetic interference.

Problem Type
Axisymmetric problem of Transient magnetics

Geometry
Flyback transformer EMC Flyback transformer is a source of high frequency electromagnetic interference. Calculate the magnetic field distribution around flyback transformer during operation cycle. Steel core Secondary Secondary Primary 4.1 mm Ø 2 mm

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

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.
flyback transformer emc

Magnetic flux density 1 cm away from the flyback transformer.
flyback transformer emc

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