ROTOR, MOTOR HAVING THE ROTOR AND METHOD FOR REDUCING A TORQUE RIPPLE OF THE ROTOR

摘要

The embodiments of the present disclosure provide a rotor, a motor having the rotor and a method for reducing a torque ripple of the rotor. The rotor rotates taking a rotation axis as a center, the rotor including electromagnetic steel sheets laminated in an axial direction; and a plurality of flux barriers penetrating the electromagnetic steel sheets in an axial direction, wherein when observed in an axial direction, in any two imaginary straight lines passing through at least one flux barrier from the center of the rotor and extending to a radial outer side, sums of the lengths of line segments superimposed on flux barriers respectively for the two imaginary straight lines keep consistent. With the embodiments of the present disclosure, a torque ripple of a rotor can be reduced, thereby vibrations, noise and losses of a motor provided with the rotor are reduced.