# Trouble finding Jiles-Atherton model parameters

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I'm reading about the Jiles-Atherton method to get the hysteris loop for a planar transformer I'm designing. A brief description of the method can be found here.

Jiles-Atherton requires at least 5 parameters which are the following:

• Saturation Magnetization: $M_s$[A/m]
• Weighting of anhysteretic vs. irreversible components: $c$ [None]
• Mean field parameter (representing interdomain coupling): $\alpha$ [None]
• Scale for the magnetic field strength: $a$[A/m] or $A$[A/m]
• Hysteresis factor: $k$[A/m]

From all of these, the only one I can think can be acquired in just a couple of lines is $M_s$, using the relation between B and H.

$B=\mu_o(H+M)$

But the others, for the papers I've read (this one, for example) is telling me I need at least a experimental setup and take measurements to stimate the parameters.

My question is: do I really need to make those measurements first? What if I don't have the transformer physically assembled yet, and I want to know what will the hypotethical B-H curve be, to stimate possible values for saturarion?

Thanks in advance for your valuable time!

This post imported from StackExchange Physics at 2017-07-05 16:21 (UTC), posted by SE-user Aquiles Páez
asked Jun 14, 2017
retagged Jul 5, 2017

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