Flyback transformer EMC - QuickField simulation example
Flyback transformer is a source of high frequency electromagnetic interference.
How to calculate the magnetic field distribution around flyback transformer during operation cycle?
Answer Typical applications Geometry
Given
Task
Solution
Results
Magnetic flux density 1 cm away from the flyback transformer.
* Reference: http://en.wikipedia.org/wiki/Flyback_transformer
Engineering question
Specify the primary and secondary winding currents as functions of time and solve a transient magnetic model to obtain the surrounding field throughout the flyback operating cycle.
flyback transformers, switched-mode transformers, power supply transformers
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Simulation problem
Problem Type
Axisymmetric problem of Transient magnetics
Ferrite permeability μ = 1000,
Operation frequency f = 1 kHz
The transformer works in discontinuous mode, currents in windings are specified as:
Magnetic field distribution around a flyback transformer over its switching cycle, identifying external stray field relevant to electromagnetic compatibility.
Model may be defined and solved as a Transient Magnetic Analysis problem.
Magnetic field around the flyback transformer.
Video
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