B(H) law: Raw data soft magnetic material
Presentation
This model defines a nonlinear B(H) dependence for an isotropic starting from the experimental B, H values.
The definition of the B(H) curve with this model is a little longer than with the analytic models, but the experimental curve is modeled more accurately.
Mathematical model
The model is constructed in the following manner:
- entry of experimental B, H values
- interpolation by a spline function
The shape of the B(H) curve is given in the figure below.
Advice (regarding software)
The spline saturation curve must have only one knee.
If your device operates with higher values of the magnetic field, where magnetic saturation may be reached, you must not describe the knee of the B(H) curve near the origin, and conversely if you work at a low magnetic field.
Dialog box
| Without Iron Loss Computation | With Iron Loss Computation |
|---|---|
 |
 |
- Open a Create Material dialog box in menu
- Choose Solid as Category field
- Choose Metal as Class field
- In Magnetic Properties:
- Choose Soft Magnetic type
- Choose Raw data BH model
- Define a table by couple of
Magnetic Field / Magnetic Flux
Density by clicking on
- In Iron loss computation
- choose None to don't take into
account Iron Loss computation
or
- Choose Bertotti and define coefficients and exponents of Bertotti Model
Note: More details about Iron Losses and Bertotti Model - choose None to don't take into
account Iron Loss computation