A permanent magnet linear synchronous motor with the same polarity

A permanent magnet linear synchronous, homopolar technology, applied in magnetic circuits, electromechanical devices, electrical components, etc. characterized by magnetic materials, can solve the problems of high processing cost and large secondary eddy current loss of permanent magnet linear synchronous motors, etc. Achieve the effect of low processing cost, simple processing and improved efficiency

Active Publication Date: 2021-07-02
HUAZHONG UNIV OF SCI & TECH +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Aiming at the deficiencies of the prior art, the present invention proposes a permanent magnet linear synchronous motor with the same polarity to reduce the eddy current loss generated in the secondary of the linear motor, so that the secondary structure can adopt a solid iron core, and the processing technology becomes simple. Solve the problem of large secondary eddy current loss and high processing cost of permanent magnet linear synchronous motor

Method used

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  • A permanent magnet linear synchronous motor with the same polarity
  • A permanent magnet linear synchronous motor with the same polarity
  • A permanent magnet linear synchronous motor with the same polarity

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Embodiment

[0024] Such as figure 1 As shown, the unilateral homopolar permanent magnet linear synchronous motor provided by the present invention includes a primary 1, a secondary 2 and an air gap formed between the primary and the secondary. The number of slots of the primary iron core is 25, and the pitch of the primary armature winding 4 is 1, which is concentratedly wound on the primary iron core in a double-layer structure. The first permanent magnet 5 - 1 and the second permanent magnet 5 - 2 are arranged at both ends of the primary iron core 3 and are flush with the upper end of the primary iron core 3 . The first excitation core 6-1 and the second excitation core 6-2 are respectively arranged on the two ends of the first permanent magnet 5-1 and the second permanent magnet 5-2 and aligned. Such as figure 2 As shown, secondary 2 includes a secondary yoke core and an array of core teeth. The secondary yoke core includes a first secondary yoke core 7 - 1 and a second secondary y...

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Abstract

The invention discloses a permanent magnet linear synchronous motor with the same polarity, belonging to the field of linear synchronous motors, comprising a primary, a secondary and two air gaps formed between the primary and the secondary; the primary includes a primary iron core, a primary armature winding, Excitation core, permanent magnet, secondary includes secondary back yoke iron core and iron core tooth pole array, the iron core tooth pole array is divided into two groups, the distance between two adjacent iron core teeth in the same group is τ, and τ is The pole pitch, the iron core teeth of the two groups are staggered, the staggered interval is τ, and the difference in electrical angle is 180 degrees. The armature winding of the present invention is concentratedly wound on the primary iron core, and the permanent magnets are arranged at the left and right ends of the primary iron core. Contact, suitable for occasions with a large air gap, such as the field of high-speed maglev trains, which reduces the requirements for the track.

Description

technical field [0001] The invention belongs to the field of linear synchronous motors, and more specifically relates to a permanent magnet linear synchronous motor with the same polarity. Background technique [0002] With the exploration and development of linear motor technology, linear motors are increasingly used as driving devices in the field of transportation. The linear motor saves the intermediate transmission coupling device, which has great advantages compared with the rotary motor. With the pursuit of speed by human beings, maglev trains have become a research hotspot in the field of transportation. The permanent magnet linear synchronous motor has many advantages as the drive of the maglev train. The permanent magnet linear motor can generate thrust and levitation force at the same time, which can save the support device for separate levitation, making the structure simple. In addition, the permanent magnet is used as the excitation Source, no need for electr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K41/03H02K1/17H02K1/22H02K1/02
CPCH02K1/02H02K1/17H02K1/22H02K41/031H02K41/033
Inventor 叶才勇邓聪张岚清汤伟
Owner HUAZHONG UNIV OF SCI & TECH
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