Title :
Ripple evaluation of high-performance synchronous reluctance machines
Author :
Fratta, A. ; Toglia, G.P. ; Vagati, A. ; Villata, F.
Author_Institution :
Dipartimento di Ingegneria Elettrica Ind., Politecnico di Torino, Italy
Abstract :
In this article, synchronous reluctance motors with multiple-segment rotor structures are considered. The presence of stator slots is taken into account, with respect to torque ripple. An analytical model is presented, based on magnetic interaction between the d and q axes, due to stator toothing. The effect of skewing is also considered, showing its partial effect on torque ripple reduction, due to the rotor anisotropy. A closed expression for the torque is obtained, giving the torque ripple as a function of design parameters. Experimental verification of the proposed model is given, from measurements on prototype motors
Keywords :
identification; machine theory; magnetic anisotropy; magnetic flux; reluctance motors; rotors; stators; torque; closed expression; d axis; high-performance; identification procedure; magnetic interaction; multiple-segment rotor structures; q axis; ripple evaluation; rotor anisotropy; skewing effect; stator slots; stator toothing; synchronous reluctance machines; torque ripple; Analytical models; Anisotropic magnetoresistance; Magnetic anisotropy; Perpendicular magnetic anisotropy; Prototypes; Reluctance motors; Rotors; Stators; Synchronous motors; Torque;
Journal_Title :
Industry Applications Magazine, IEEE
DOI :
10.1109/2943.392459
