SYNCHRONOUS MOTOR Russian patent published in 2009 - IPC H02K19/06 H02K16/00 H02K21/12 

FIELD: electricity.

SUBSTANCE: invention is attributed to electric engineering, in particular to synchronous motors with constant magnets and can be used in industrial, transport and electromechanical systems. Suggested synchronous motor contains body, stator pack with teeth and polyphase winding, interleaved coaxial ice-pails of rotor and stator consisting of ferromagnetic and nonmagnetic elements located along axis of rotation, and shaft. Besides according to this invention inner stator is introduced into the motor. The motor has constant magnets which are tangentially and oppositely magnetised and radially located between pole tips with teeth on outer cylindrical surfaces. Teeth on adjacent pole tips are shifted by half of tooth grating relative to each another, and teeth and grooves width is the same. Stator teeth and ferromagnetic elements of stator ice-pails repeat position of pole tips, and ferromagnetic elements of stator ice-pails which are mechanically connected with the shaft have the same angular width as stator teeth but they are located uniformly in all pails.

EFFECT: improvement of mass-size parametres and dynamical characteristics of synchronous motors.

4 dwg