RADIAL-FLUX ELECTROMAGNETIC MOTOR COMPRISING MULTIPLE AIR GAPS AND A ROTOR SURROUNDED BY TWO STATORS, WITH REDUCED COGGING TORQUE

摘要

The invention relates to an electromagnetic motor (M) with radial flux, intended in particular to aid power-assisted steering in a motor vehicle. The motor comprises at least two stators (1, 1a) surrounding at least one rotor (2), an air gap (4, 4a) being defined between each of the stators (1, 1a) and the surrounded rotor (2). The magnet or magnets (3) borne by the rotor (2) extend(s) fully inside the rotor (2) between the two air gaps (4, 4a) and each of the coil elements (5, 6, 7, 5a, 6a, 7a) of the series of coil elements borne by a corresponding stator (1, 1a) comprises a spacer element (5, 5a) disposed between each slot (6, 6a) of one tooth (7, 7a) and the slot (6, 6a) of the successive tooth (7, 7a). In this way, cogging torque is prevented. The invention is suitable for use in the field of electromagnetic motors.