An Alternating Pole Permanent Magnet Vernier Motor
A vernier motor and alternating pole technology, which is applied in the direction of synchronous machines, electromechanical devices, electrical components, etc., can solve the problems of increasing the torque ripple of the motor and the difficult modulation of the motor magnetic field, and achieve the increase of the magnetic density of the outer air gap and large output Torque, the effect of increasing the output torque
Active Publication Date: 2020-01-31
WUHAN UNIV OF TECH
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Problems solved by technology
However, the Halbach array will increase the torque ripple of the motor to a certain extent, and make the magnetic field of the motor difficult to modulate
Method used
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[0030] In order to better understand the present invention, the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0031] Such as figure 1 with figure 2 An alternating pole permanent magnet vernier motor shown includes an outer stator part, a rotor part and an inner stator part, wherein,
[0032] The outer stator part includes an outer stator core 2, and the outer stator core 2 has outer stator slots and outer stator teeth evenly spaced in the circumferential direction; the outer stator slots are embedded with armature windings 1; the outer stator teeth include alternately arranged The stator tooth A9 and the stator tooth B10, the stator tooth A9 is a conventional structure with a modulation pole at the end; the stator tooth B10 is split into two modulation poles at the end, and an outer stator permanent magnet array is arranged between the modulation poles , that is, the Halbach permanent magnet array...
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The invention discloses an alternating pole permanent magnet vernier motor, which comprises an outer stator part, a rotor part and an inner stator part. The outer stator part comprises an outer statorcore, and outer stator slots and outer stator teeth are uniformly distributed in the inner circumferential direction of the outer stator core at intervals. The outer stator slot is embedded with an armature winding; The outer stator teeth comprise stator teeth A and stator teeth B which are alternately arranged, and the end of the stator teeth A is a modulating pole; The end of the stator teeth Bis split into two modulating poles, and an external stator permanent magnet array is arranged between the modulating poles. The invention has the advantages that: the invention has an inner stator and an outer stator; the double stator structure can effectively utilize the magnetic field of the alternating pole permanent magnet, reduce the magnetic flux leakage and improve the torque; The two kinds of stator teeth on the outer stator core are arranged alternately, which is advantageous to increase the volume of the slot. The Halbach permanent magnet array on the outer stator is favorable forincreasing the flux density of the air gap and increasing the output torque.
Description
technical field [0001] The invention relates to the technical field of motor equipment, in particular to an alternating pole permanent magnet vernier motor. Background technique [0002] The permanent magnet vernier motor introduces a modulated pole 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. [0003] The low-speed and high-torque capability of the permanent magnet vernier motor can be applied to occasions where the motor is directly driven, such as a hub motor, etc. The direct drive of the permanent magnet mot...
Claims
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IPC IPC(8): H02K16/04H02K21/02
CPCH02K16/04H02K21/025
Inventor 李建贵刘璟轩陈豪
Owner WUHAN UNIV OF TECH