PERMANENT-MAGNET MACHINE ROTOR Russian patent published in 2006 - IPC H02K1/27 H02K15/03 H02K15/14 

FIELD: electrical engineering; rotors for motors, generators, various power installations such as power stations, welding units, mechanized tools, etc.

SUBSTANCE: proposed rotor designed for use in permanent-magnet machine incorporating flat permanent magnets and magnetic core stacks has nonmagnetic metal casing accommodating core stacks and poles made of magnetically soft metal sheet, as well as flat magnets disposed in nonmagnetic material parallelepiped-shaped holed open on one end so that at least magnets are fixed in these holes by means of easily curing material or by surface of part having temperature expansion compensating means joined to rotor; novelty is that stress concentrators of compensation means are uniformly offset on rotor ring circumference relative to fastening slots and semi-cylindrical depressions on circular surface, as well as relative to one another.

EFFECT: precluded shrinkage cracks in nonmagnetic material of rotor body at crystallization and deformation of its ring upon mechanical treatment.

4 cl, 6 dwg