Losses scaling in soft magnetic materials

Abstract

Purpose

The paper presents an application of the scaling theory in a description of energy losses in soft magnetic materials in order to improve an agreement between measurements and theoretical models.

Design/methodology/approach

The scaling theory allows the description of energy losses by a generalized homogenous function, which depends on scaling exponents α, β and amplitudes Γ⁽ⁿ⁾. The values of the scaling exponents and amplitudes were estimated on the basis of measurement data of total energy losses.

Findings

The main findings of the paper are: the linear relationships between the scaling exponents α and β, the data collapse of energy losses and the scaling laws for asymptotic exponents of energy losses derivatives.

Research limitations/implications

The origin of the data collapse and the relationship between the scaling exponents will be the subject of further research with the aid of renormalization group method

Practical implications

The paper could be useful both for device designers and researchers involve in computational electromagnetism. Particularly, the data collapse allows a comparison of energy loss values measured in laboratories on different samples and by different methods.

Originality/value

The application of the scaling theory in a description of energy losses in soft magnetic materials improves an agreement between measurement and theoretical models.

Citation

Sokalski, K., Szczygłowski, J., Najgebauer, M. and Wilczyński, W. (2007), "Losses scaling in soft magnetic materials", COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, Vol. 26 No. 3, pp. 640-649. https://doi.org/10.1108/03321640710751118