ROTOR OF ELECTRIC MACHINE Russian patent published in 2014 - IPC H02K1/27 H02K1/28 H02K21/14 

FIELD: electricity.

SUBSTANCE: rotor of the electric machine contains a shaft, a magnet core made of equally alternating magnet and non-magnet circular plates, permanent magnets with pole tips and a cylindrical non-magnet cage covering them from the side of the external surface. The permanent magnets with pole tips are installed in windows of the above cage. At that according to the invention the permanent magnets are made so that the radius centre of the external cylindrical surface of each magnet is shifted along the longitudinal magnet axis towards the external surface of the non-magnet cage forming a smooth increase in the cage cross-section above the magnet and pole tip from the magnet longitudinal axis towards its lateral sides. Mechanical stress occurring in such design of the rotor is distributed evenly across the cross-section of the above non-magnet cage over each permanent magnet with pole tip from the magnet longitudinal axis towards its lateral sides during operation of the electric machine.

EFFECT: improving reliability and power of the electric machine containing the claimed rotor due to possible increase in rotation frequency.

1 dwg