Nonlinear ferromagnetic core in sinusoidal magnetic field - QuickField simulation example
A sinusoidal current carrying conductor is surrounded by nonlinear ferromagnetic core.
How to calculate the magnetic-field distribution in a nonlinear core under sinusoidal excitation?
Answer Typical applications Geometry
Given
Task
Solution
Results
B,H distribution along the radius calculated by QuickField and by analytical expression.
Engineering question
Use the modified B'(H) curve in an AC-magnetic model and compare the radial B and H distributions with the analytical expressions.
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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