ELECTRICAL MACHINE Russian patent published in 2009 - IPC H02K19/06 H02K19/20 

FIELD: electricity.

SUBSTANCE: present invention pertains to electrical engineering, particularly to electrical machines and electric drive. The electrical machine has a rotor made from magnetic material with permanent magnets, polarity of which alternates at a tangent, and a stator, for which the core is made from toothed magnetic rings, the number of which on each magnetic ring is twice less than the number of rotor poles. Armature windings are circular on the number of phases, distributed in the axial direction and are put between two neighbouring magnetic rings. The teeth of magnetic rings, between which a ring winding is put, are shifted by an angle, equal to the angular width of the rotor pole. The angular position of the teeth of magnetic rings of different phases differs by an angle 2π/m radians, where m is the number of phases. According to the invention, magnetic rings of the electrical machine are made from soft magnetic composite material with teeth, projecting in the axial direction. Teeth of magnetic rings, between which the winding ring is put, are directed towards each other in recesses of the adjacent magnetic ring. Between two adjacent magnetic rings of a given phase, there are toroidal magnetic circuits for closing the magnetic flux of the phase.

EFFECT: increased power with reduced mass and size of the electrical machine.

2 cl, 5 dwg