The use of segmented-shifted grain-oriented sheets in magnetic circuits of small AC motors

Vincent Mallard (1) , Cristian Demian (1) , Jean-François Brudny (1) , Guillaume Parent (1)

1 LSEE - Laboratoire Systèmes Electrotechniques et Environnement

In order to increase energy efficiency of AC rotating machines, one possibility is the use of Grain-Oriented steel sheets to build stator magnetic circuits in order to reduce iron losses. After presenting the general concept considering a non-segmented-shifted sheets prototype recently developed in our laboratory, a segmented structure is introduced. Experimental comparisons between these structures are performed using static machines. The main results are analysed using Finite Element modelling that leads to extract the particular physical concepts which govern these associations.

Keywords: AC machine efficiency; Iron losses; Grain-Oriented electrical steel; Shifting principle; Segmentedshifting principle; Static machines

Domains: Electric power

Vincent Mallard, Cristian Demian, Jean-François Brudny, Guillaume Parent. The use of segmented-shifted grain-oriented sheets in magnetic circuits of small AC motors. Open Physics, 2019, 17 (1), pp.617 - 622. ⟨10.1515/phys-2019-0063⟩. ⟨hal-03350696⟩