ROTOR FOR ELECTRIC MOTOR Russian patent published in 2014 - IPC H02K1/27 H02K21/14 

FIELD: electricity.

SUBSTANCE: invention relates to the field of electric engineering and may be used in electric pumps with permanent magnets on the rotor. The rotor core for electric motor comprises a variety of poles. Each pole consists of a pair of the first permanent magnets placed as V-shaped assembly open in direction of the outer peripheral side and the second permanent magnet placed in parallel to circumferential direction towards the open part of the V-shaped assembly, at that polarity is changed in sequence. The groove is shaped so that the groove centre is in the range between electric angle position shifted per 1/4 of the harmonic component cycle of voltage induced in direction of d-axis and electric angle position shifted per 1/8 of the harmonic component cycle in direction of q-axis from the basic point placed between the line connecting an angular part of the second permanent magnet at the outer peripheral side of the rotor and the rotor shaft centre and q-axis out of the variety of separating lines, which connect the variety of separating points set within the range of electric angle corresponding to one cycle of the harmonic component from d-axis up to q-axis at the outer periphery of the rotor core and the rotor shaft centre.

EFFECT: reducing losses in steel.

6 cl, 10 dwg