ELECTRIC MACHINE Russian patent published in 2024 - IPC H02K1/27 H02K21/14 H01F7/02 

FIELD: electrical engineering.

SUBSTANCE: invention relates to electric machines with permanent magnets on rotor, and can be used in electric drives and generator plants. Electrical machine comprises a stator housing and a rotor sleeve made of uncharged ferromagnetic material; shaft; two or more stacked stator packages installed in the housing with axial gaps, in the slots of which a multiphase p-pole winding is installed; stacked rotor packs with p/2 teeth, forming pairs with stator packs; one or more excitation coils mounted on the stator in the axial gaps between the pairs of the stator and rotor packages; permanent magnets installed in slots of rotor packages. Note here that at least two magnets adjoining each other in radial direction are fitted in every groove. Magnets located in the rotor slots further from the rotor surface have a lower coercive force by magnetization or a higher residual induction.

EFFECT: improving reliability of the electric machine by reducing the demagnetizing force acting on the magnets, preventing the demagnetization of the magnets, as well as increasing the efficiency and specific moment and power of the machine.

3 cl, 5 dwg