Use of grain-oriented steel in rotating fields
Energy efficiency improvement of AC electric motors

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IN157 V1 Research and innovation

Use of grain-oriented steel in rotating fields
Energy efficiency improvement of AC electric motors

Authors : Bertrand CASSORET, Jean-François BRUDNY, Thierry BELGRAND

Publication date: February 10, 2013 | Lire en français

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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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