A multi-air-gap axial flux-magnetic field modulated permanent magnet motor

A technology of permanent magnet motor and magnetic field modulation, applied in electromechanical devices, electrical components, etc., can solve the problems of limited comprehensive torque density end winding length, winding end length, copper loss, etc., to solve the problem of limited torque density , The effect of improving power factor, reducing copper consumption and copper consumption

A technology of permanent magnet motor and magnetic field modulation, applied in electromechanical devices, electrical components, etc., can solve the problems of limited comprehensive torque density end winding length, winding end length, copper loss, etc., to solve the problem of limited torque density , The effect of improving power factor, reducing copper consumption and copper consumption

CN105406669BInactive Publication Date: 2017-09-26HUAZHONG UNIV OF SCI & TECH
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  • A multi-air-gap axial flux-magnetic field modulated permanent magnet motor
  • A multi-air-gap axial flux-magnetic field modulated permanent magnet motor
  • A multi-air-gap axial flux-magnetic field modulated permanent magnet motor

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Embodiment Construction

[0019] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0020] The invention proposes to organically combine the magnetic field modulation mechanism with the multi-air-gap axial flux topological structure to establish the concept of the multi-air-gap axial flux-magnetic field modulation permanent magnet motor. By adopting the axial magnetic flux topology combined with the ring winding, the torque density of the motor is improved and the end length is...

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Abstract

The invention discloses a multi-air-gap axial magnetic flow-magnetic field modulation permanent magnet motor, which comprises a plurality of stators and a plurality of rotors, wherein the stators and the rotors are sequentially in staggered arrangement in the axial direction; the two ends of the permanent magnet motor are two surface-mounted permanent magnet rotors; the other rotors are embedded permanent magnet rotors; the structure dimensions of the plurality of stators are identical; the stators are subjected to two-edge grooving and use annular windings; and each stator sequentially deviates for the mechanical angle of the half groove distance relative to the former stator in the circumference direction. The multi-air-gap axial magnetic flow-magnetic field modulation permanent magnet motor realized according to the invention can comprehensively solve the inherent problems of magnetic field modulation motor torque density limitation and low power factor on the basis of remaining good performance of a magnetic field modulation motor.

Description

technical field [0001] The invention belongs to the field of direct drive motors, and more specifically relates to a multi-air-gap axial flux-magnetic field modulation permanent magnet motor. Background technique [0002] In recent years, permanent magnet traction motors have attracted extensive attention from researchers due to their advantages such as high efficiency, high power density, and strong overload capability. Countries such as Germany, France, Japan, and South Korea have all carried out research work, and some have entered the stage of engineering and commercial promotion and application. However, since the direct drive traction system requires the motor to achieve high torque output in a limited volume, it still has challenges in terms of torque density and motor heat generation. Compared with conventional motors, field-modulated permanent magnet motors can greatly increase the torque density, and have good application prospects in direct-drive traction systems...

Claims

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Application Information

Patent Timeline
26 Sep 2017
Publication
CN105406669B
IPC
H02K16/00
CPC
H02K16/00
Inventors
李健; 张芮