2. Use of grain-oriented steel in rotating fields

The results given in this paragraph are largely based on the work of Samuel Lopez, who prepared his doctoral thesis at LSEE in partnership with ThyssenKrupp Electrical Steel.

2.1 Magnetic steels

Existing magnetic steels used in high-current applications are essentially made of iron-silicon alloys [D 2 110][E 1 750] . They are characterized by their ability to allow the magnetic field to circulate (permeability) and, above all, by the losses they generate. Generally speaking, losses increase with sheet thickness, although the quality of the steel has a major influence. Grain-oriented steels are slightly more complicated...

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Use of grain-oriented steel in rotating fields

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Applications to asynchronous machines

Bibliography

(1) - JANCOVICI (J.M.), GRANDJEAN (A.) - Le plein s'il vous plait. - Editions du seuil (2006).
(2) - BENHADDADI (M.) - L'efficacité énergétique à la rescousse du scénario 450 ppm. - CONFREGE 2012, Montréal, Canada (2012).

Standards and norms

Classes de rendement pour les moteurs à induction triphasés à cage, mono vitesse International Electrotechnical Commission - IEC 60034-30 - 2008
Méthode normalisées pour la détermination des pertes et du rendement à partir d'essais, International Electrotechnical Commission - IEC 60034-2 - 2007

Patents

BRUDNY (J.F.), CASSORET (B.), LEMAÎTRE (R.) (TKES), VINCENT (J.N.) (TKES). – Magnetic core and use of magnetic core for electrical machines. International Patent. PCT/EP2008/061884, March 2009.