STATOR HAVING DENTS OF MAGNETICALLY SOFT POWDER MATERIAL Russian patent published in 2004 - IPC

FIELD: electrical engineering.

SUBSTANCE: core of stator of electric machine includes annular yoke and large number of dents 1 arranged along periphery on annular yoke and extending from it along radiuses. Intervals between dents restrict grooves for winding arranged along circumference. Each dent 1 is in the form of separate member made of magnetically soft powder material. Dent 1 has cross size not lowered in direction to peripheral tip 3 along length of dent 1 corresponding to groove for winding and it has the same or less size of cross section along nearest end 4 of dent 1. That is why dent 1 may be assembled with part 5 of annular yoke and winding 7 may be put onto it before assembling with yoke. It provides optimal relation of areas of wire of stator winding and grooves for winding, lowered impedance of inductor, reduced active losses and enhanced heat conductivity.

EFFECT: increased power, lowered size, mass and cost of electric machine.

7 cl, 8 dwg