ELECTRIC MACHINE ROTOR Russian patent published in 2017 - IPC H02K1/27 H02K1/28 

FIELD: electrical engineering.

SUBSTANCE: invention relates to electrical engineering. Rotor comprises a cylindrical shaft from non-magnetic material, on which there is a magnetic inductor containing planks made of magnetic material, alternating with poles, made of material with high magnetic permeability. Shaft is made of disks of equal resistance with the equal outer diameter. On the outer surface of the shaft there are longitudinal grooves of round section, evenly spaced, symmetrical with respect of the radial planes. Planks from magnetic material are made in the form of plates, ends of which, facing the shaft, are congruent to its surface, and the ends, facing the outer surface of the rotor, are congruent to the surface of thin-wall locking sleeve, fitted on the inductor, and contacting with them. Surfaces of the poles, facing the thin-wall locking sleeve, project relative to the surface of the magnetic planks and are rounded, radius of curvature of which is less than the radius of curvature of the surface of the thin-wall locking sleeve on its contact with the magnetic planks. Magnetic planks are tangentially magnetized.

EFFECT: technical result is increased mechanical strength of the rotor, reduction of additional losses and parasitic moments caused by higher harmonics of the magnetic field of the inductor.

3 cl, 2 dwg