RELUCTANCE SYNCHRONOUS MOTOR

摘要

Synchronous reluctance motor with high specific electromagnetic torque is proposed. Motor contains a teethed outer rotor (1) without windings and inner stator (2), where into the six large slots three-phase armature winding is placed (3) (Fig.1). The rotor teeth (4) have two units higher than the number of stator teeth (5). Number of stator teeth between the major slots, such as (6) and (7) in which the armature winding (3) is placed, is greater than one. Stator and rotor teeth are spaced evenly, regardless of the armature winding (3) in the presence of the stator. The rotating magnetic field appears by connecting three-phase armature winding to the alternating current source. The magnetization force caused by armature winding exerts an effect on rotor that is trying to take a position by magnetization force to the peak area of the rotor teeth facing towards the stator teeth. Turning the rotating magnetic field by 90 grades iniciates the shift of rotor's teeth position by half of teeth section. The rotor starts to rotate, but at a reduced rotational velocity relative to the rotating magnetic field. The electromagnetic torque can be defined as the partial derivative of the magnetic field energy stored in air gap at the rotor with respect to turning angle. The torque increases by increasing the stator and rotor teeth number to a certain extent.