Dynamically vertically end portion effect weakened short primary linear motor

A linear motor, longitudinal end technology, applied in the direction of electromechanical devices, electrical components, electric components, etc., can solve the problems of reduced motor output performance, weakened dynamic longitudinal end effect, etc., to improve the output thrust and shorten the end teeth. The process is simple , the effect of improving traction efficiency

Inactive Publication Date: 2018-08-03
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology

[0003] In view of the above defects or improvement needs of the prior art, the present invention provides a short primary linear motor with a weakened dynamic longitudinal end effect, which aims

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  • Dynamically vertically end portion effect weakened short primary linear motor
  • Dynamically vertically end portion effect weakened short primary linear motor
  • Dynamically vertically end portion effect weakened short primary linear motor

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[0023] In order to make the objectives, technical solutions and advantages of the present invention clearer, the following further describes the present invention in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but 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 conflict with each other.

[0024] Such as figure 1 As shown, the present invention is mainly aimed at improving the short primary linear induction motor whose end windings are full slots. The linear motor includes a primary iron core 1, a winding 2, a secondary induction plate 4, and a secondary back plate 3. Winding 2 Wound around the upper part of the primary iron core 1, the secondary induction plate 4 is located above the se...

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Abstract

The present invention discloses a dynamically vertically end portion effect weakened short primary linear motor. The motor comprises a primary iron core, and a winding and a secondary winded on the primary iron core; the end winding of the primary iron core is a full tank structure; the length of a tooth located at the end portion of the primary iron core is smaller than the length of a tooth located at the middle portion of the primary iron core, and the length of a tooth, close to the middle portion of the primary iron core, located at the end portion of the primary iron core is not smallerthan the length of a tooth, far away from the primary iron core, located at the end portion of the primary iron core. The teeth at the incoming end portion and the outgoing end portion of a short primary are regularly shortened and electromagnetic gaps of corresponding end portions are regularly increased to allow the magnetic field change intensity of the incoming end and the outgoing ends of theprimary to be weakened during movement of the linear motor and relieve the magnetic distortion degree of the end portion of the primary end so as to reduce the additional loss and the electromagneticresistance generated by a dynamically vertically end effect and achieve the purposes of increasing output thrust, improving the traction efficiency and reducing the thrust fluctuation.

Description

technical field [0001] The invention belongs to the field of linear motors, and more specifically relates to a short primary linear motor with weakened dynamic longitudinal end effects. Background technique [0002] Due to the advantages of simple structure, low noise, large traction force, convenient maintenance and low operating cost of longer primary linear motors, short primary linear motors are widely used in many industrial fields, especially in rail transit. The train driven by the linear motor has the following advantages compared with the train driven by the rotary motor: (1) the overall energy consumption of the system is low; (2) the turning radius of the train is small; (3) the climbing ability is strong; (4) the tunnel height required by the train is small , and the cost is low; (5) The train accelerates quickly, and the running noise is small. However, the linear motor also has its disadvantages. Since the primary iron core of the linear motor is disconnected,...

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Application Information

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IPC IPC(8): H02K41/02
CPCH02K41/02
Inventor 李健王洪亮
Owner HUAZHONG UNIV OF SCI & TECH
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