Asymmetric magnetic pole rotor and motor

Abstract

The invention relates to an asymmetric magnetic pole rotor and a motor. Arc-shaped magnetic barriers are asymmetric about the geometric center line of an N-pole magnetic pole, and arc-shaped permanent magnets are asymmetric about the geometric center line of the N-pole magnetic pole; the N pole and the S pole of the asymmetric magnetic pole rotor topology are asymmetric about the geometric center line of the two magnetic poles; the arc-shaped magnetic barrier is divided into three layers; and the S pole topology is asymmetric, namely, the N pole is obtained by rotating 45 degrees. A reinforcing rib is designed at the geometric center of a magnetic pole of the rotor topology; according to the asymmetric magnetic pole rotor design, the magnetic field can be shifted, under the condition that the permanent magnet torque is basically unchanged, the asymmetric magnetic pole rotor topology increases the reluctance torque through the magnetic field shifting effect, and then the output torque is increased; the magnetic field distribution is optimized, and the sine degree of the air gap flux density waveform is improved, so that compared with the original scheme, the optimized scheme has the advantages that the peak torque is obviously improved, and the torque ripple and the radial electromagnetic force are obviously reduced.

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