Affiliations: [a] SATIE, ENS Cachan, CNRS, UniverSud, President Wilson, Cachan, France | [b] Istituto Nazionale di Ricerca Metrologica, Strada delle Cacce, Torino, Italy | [c] Dipartimento Energia, Politecnico di Torino, Duca degli Abruzzi, Torino, Italy
Correspondence:
[*]
Corresponding author: Carlo Appino, SATIE, ENS Cachan, CNRS, UniverSud, 61 av du President Wilson, F-94230 Cachan, France. Tel.: +33 147402125; E-mail:[email protected]
Abstract: The magnetic materials used in embedded applications need characterization
and modeling in the kilohertz range. This problem is well addressed under
conventional alternating induction, but with rotational and two-dimensional
induction loci, which are ubiquitous in electrical machines, there is lack
of results, because of the difficult task of reaching such high frequencies
at technically interesting induction values with the conventional laboratory
test benches. To overcome this difficulty, a novel three phase magnetizer
has been designed, exploiting 3D finite element calculations, and applied in
the lab. This device permits one to measure magnetization curve and losses
in soft magnetic steel sheets and soft magnetic composites under alternating
and circular induction up to about 5 kHz. We provide a few significant
examples of loss measurements in 0.20 mm thick Fe-Si and Fe50Co50
laminations, and in soft magnetic composites. These measurements bring to
light the role of skin effect under one- and two-dimensional fields.
Keywords: Soft magnetic materials, soft magnetic composites (SMC), magnetic loss, 2-dimensional magnetizer
