Bilateral Halbach consequent pole type permanent magnet vernier motor

Abstract

The invention discloses a bilateral Halbach consequent pole type permanent magnet vernier motor. The motor comprises an outer stator, a rotor and an inner stator, the outer stator comprises an outer stator iron core, outer stator grooves and outer stator teeth are uniformly distributed in the outer stator iron core at intervals in the circumferential direction, outer stator armature windings are embedded in the outer stator grooves, and the end part of each outer stator teeth is split into two outer modulation poles; the rotor comprises a rotor core, inner rotor grooves and outer rotor groovesare formed in the inner side and the outer side of the rotor core in the circumferential direction at intervals, the inner rotor grooves and the outer rotor grooves are arranged in a staggered mode,and rotor inner side Halbach permanent magnets and rotor outer side Halbach permanent magnets are embedded into the inner rotor grooves and the outer rotor grooves respectively; and the inner stator comprises an inner stator iron core, the inner stator grooves and the inner stator teeth are evenly distributed in the outer circumferential direction of the inner stator iron core at intervals, the end of each inner stator teeth are split into two inner modulation poles, and the inner stator armature windings are embedded in the inner stator grooves. The bilateral Halbach consequent pole type permanent magnet vernier motor is low in speed, large in torque, small in cogging torque, small in torque pulsation and small in permanent magnet consumption.

Description

technical field [0001] The invention relates to the technical field of motor equipment, in particular to a double-sided Halbach alternating pole permanent magnet vernier motor. Background technique [0002] Permanent magnet vernier motors work on the principle of magnetic field modulation. The permanent magnet vernier motor introduces a modulating tooth structure on the stator teeth of the traditional permanent magnet motor, and uses a special vernier effect to modulate the magnetic field of the stator armature winding with a low pole logarithm and a high speed, so as to obtain a magnetic field that can be compared with a high pole logarithm and low speed. The harmonic field component that matches and acts on the permanent magnet field. This method can achieve the goal of high torque at low speed without increasing the volume and number of slots of the motor. The low-speed and high-torque capability of the permanent magnet vernier motor can be applied to occasions where th...

AI Technical Summary

Problems solved by technology

However, the motor has problems such as large magnetic flux leakage, low utilization rate of permanent magnets and excessive cogging torque.

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