ELECTRIC MACHINE Russian patent published in 2024 - IPC H02K21/14 H02K1/278 

FIELD: electrical engineering.

SUBSTANCE: electrical machine comprises a stator housing and a rotor sleeve made from non-laminated ferromagnetic material, a shaft, two or more laminated stator packages installed in the housing with axial gaps, in the slots of which there is a multiphase p-pole winding, laminated rotor packages with p/2 teeth, which form pairs with stator packages. One or more excitation coils are fixed on the stator in axial gaps between pairs of stator and rotor packages. Magnets with coercive force of at least 3 kOe are installed in slots of rotor packages. A feature of the invention is the design of the permanent magnets, in which the magnet has an outer section, which widens towards the bottom of the rotor slot, radial size of which is not less than 1/4 of the radial size of the magnet, and the angles formed by the tangent planes to the opposite side surfaces are not less than 20°. Distance from the surface of the magnet facing the stator to the inner surface of the stator package is not more than a tenth of the radial size of the magnet.

EFFECT: improving reliability of electric machine, increasing its efficiency, specific moment and power.

3 cl, 3 dwg