Nonlinear ferromagnetic core in sinusoidal magnetic field - QuickField simulation example
A sinusoidal current carrying conductor is surrounded by nonlinear ferromagnetic core.
How to find magnetic field distribution in nonlinear ferromagnetic cores?
Engineering answer Typical applications Geometry
Given
Task
Solution
Results
B,H distribution along the radius calculated by QuickField and by analytical expression.
Engineering question
Set up a plane-parallel QuickField AC Magnetics problem for a nonlinear ferromagnetic core and evaluate magnetic field distribution from computed field results.
ferromagnetic magnetic cores, AC steel cores, nonlinear transformer cores
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Simulation problem
Problem Type
Plane-parallel problem of AC magnetics.
Total current I = 500 A.
Frequency f = 50 Hz.
Core BH-curve: H = 100·B²
Calculate B and H distribution along the radius R.
To calculate the sinusoidal filed distribution in nonlinear core we should use the modified curve B'(H). In this particular case the modified BH-curve can be calculated as B`(H) = B(H) * (1 + 1/sqrt(180)).
Magnetic field strength distribution
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