Jiles-Artherton parameter extract

• Buggy, not recomended without good knowlage of matlab

Prerequisites

• Matlab
• Simscape
• elec_inductor_hysteresis Model

How to use

This tool is very user unfriendly

sp = 1; % starting index for logging

init parameters in order

% dBdH0 % Anhysteretic B-H gradient when H is zero

% B1 % Flux density point on anhysteretic B-H curve

% H1 % Corresponding field strength

% c % Coefficient for reversible magnetization, c

% K % Bulk coupling coefficient, K

% alpha % Inter-domain coupling factor

% error %

This here is a good fit for AlNiCo 5

a(1,:)= [4.76258753832144e-05 1.08137459383704 31510.3190144165 0.125292584870499 83177.9056903517 0.0622798260003811 11.9530626244814];

Run

Notes

• This does like to get stuck at local minimas sometimes
• Extract reference BH loops using grabit.m
• It can take a long time to find a good fit if your initial parameters are too far of

Licenses

TODO