High-frequency rotational losses in different Soft Magnetic Composites SMCReport as inadecuate

High-frequency rotational losses in different Soft Magnetic Composites SMC - Download this document for free, or read online. Document in PDF available to download.

1 SATIE - Systèmes et Applications des Technologies de l-Information et de l-Energie 2 INRIM - Istituto Nazionale di Ricerca Metrologica 3 delet - Dipartimento di Ingegneria Elettrica

Abstract : The isotropic properties of Soft Magnetic Composites SMC favor the design of new machine topologies and their granular structure can induce a potential decrease of the dynamic loss component at high frequencies. This paper is devoted to the characterization of the broadband magnetic losses of different SMC types under alternating and circular induction. The investigated materials differ by their grain size, heat treatment, compaction rate and binder type. It is shown that, up to peak polarization Jp = 1.25 T, the ratios between the rotational and the alternating loss components classical, hysteresis, and excess are quite independent of the material structural details, quite analogous to the known behavior of nonoriented steel laminations. At higher inductions, however, this is no more the case. It is observed, in particular, that the Jp value at which the rotational hysteresis loss attains its maximum, related to the progressive disappearance of the domain walls under increasing rotational fields, decreases with the material susceptibility.

Author: O De La Barrière - C Appino - C Ragusa - F Fiorillo - F Mazaleyrat - M Lobue -

Source: https://hal.archives-ouvertes.fr/


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