THREE-PHASE RELUCTANCE INDUCTOR MOTOR WITH LOW TORQUE FLUCTUATIONS Russian patent published in 2000 - IPC

FIELD: servo drives. SUBSTANCE: motor has non-wound rotor 1 with teeth 2 and stator incorporating magnetic core 3 with teeth 4 carrying coils 5. Stator teeth are arranged so that three- phase magnetic system is organized. Proposed geometry of teeth arrangement meant to reduce torque fluctuations at low motor speeds and 18-deg. power supply to its windings is as follows: crown width of stator teeth over air gap b_z1 = (0,3...0,36)t₂, that of rotor b_z2 = (0,39...0,45)t₂, where t₂ is rotor tooth pitch. Magnetic system of motor is arranged so that rotor teeth are skewed relative to stator teeth through β = (0,05-0,25)t₂. EFFECT: reduced torque fluctuations. 4 cl, 5 dwg