INVESTIGATION OF THE INFLUENCE OF FLUX BARRIERS ON THE ELECTROMAGNETIC FORCE AND TORQUE IN A SYNCHRONOUS RELUCTANCE MOTOR

Abstract

The Synchronous Reluctance Motor (SynRM) is a type of electric motor that operates on the principle of reluctance. The rotor of SynRM has no windings or permanent magnets. SynRMs are used in various applications: industrial drives, pumps and fans, compressors, HVAC systems. However, the disadvantage of SynRM is high vibration and noise. The electromagnetic force is the main component causing motor vibration. The electromagnetic parameters are calculated to minimize the radial electromagnetic force, which will reduce the vibration and noise, vibration, and harshness of the motor. The number and parameter of flux-barier determines the harmonic amplitude of electromagnetic force. This article aims analyzes the force density and harnomic electromagnetic force of the SynRM motor with 36 stator slot and 4 rotor poles.  The electromagnetic forces are calculated by finite element method. Investigation of the influence of different flux barrier dimensions on the radial force and torque ripple of the SynRM. The results show that the dimensions of the magnetic flux barriers are parameters that have a direct impact on the electromagnetic force and torque of the SynRM. Optimizing the flux barrier dimensions can significantly reduce the torque ripple of the SynRM