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Disc type iron-core-free permanent magnet direct current (PMDC) motor

A permanent magnet direct current, disk-type ironless technology, applied to synchronous motors with stationary armatures and rotating magnets, the shape/style/structure of winding conductors, etc., can solve the problems of industrialization that needs to be improved, complex control systems, Complicated structure and other issues, to achieve excellent fast response performance and dynamic performance, large heat dissipation area, and small volume

Inactive Publication Date: 2013-05-29
浙江义阳光电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Disadvantages of permanent magnet ironless motor: complex structure, rising cost; high speed has advantages, but low and medium speed has no advantages; the control system is more complicated; the degree of industrialization needs to be improved, etc.

Method used

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  • Disc type iron-core-free permanent magnet direct current (PMDC) motor
  • Disc type iron-core-free permanent magnet direct current (PMDC) motor
  • Disc type iron-core-free permanent magnet direct current (PMDC) motor

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Embodiment Construction

[0025] like Figure 1~Figure 3 As shown, the disc ironless permanent magnet DC motor includes a stator and a rotor, and the structure of the stator is as follows figure 1 As shown, the stator is an axially placed tapered ring winding wound without an iron core, and the magnetic flux passes through the air gap and the winding in the axial direction. The central axis of the axisymmetric tapered ring is divided into three equal parts to form the first inner diameter and the second inner diameter , where the length of the first inner diameter at the tip of the tapered ring is two-thirds of the second inner diameter, as figure 2 shown. The annular winding of this structure has the best magnetoelectric conversion efficiency, which is 15% higher than that of the prior art, and the Hall magnetic sensor is arranged at intervals in the annular winding.

[0026] The rotor is a disc composed of a magnetic steel guide disc and an aluminum shell. The permanent magnets are alternately bon...

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Abstract

The invention relates to a disc type iron-core-free PMDC motor. The disc type iron-core-free PMDC motor comprises a middle stator and rotors which are installed on a spindle and in disc shapes, disc surfaces are arranged parallelly and correspondingly, gap flux densities on two sides of the stator are the same, the stator comprises an iron-core-free rolled annular winding which is placed axially, and a magnetic line of force passes gaps and the winding axially; and each rotor is a disc composed of a magnetic conducting disc for accommodating magnetic steel and an aluminum case, a permanent magnet is bonded on the magnetic conducting disc in an N and S alternating mode, and polarities of magnetic steel corresponding to the rotors up and down are opposite. The disc type iron-core-free PMDC motor is characterized in that the annular winding is an axial symmetry conical ring composed of a plurality of sections of arcs, the central axis points to the axis of the stator, and the tip of the conical ring is close to the axis of the stator. The magneto-electricity conversion efficiency of the motor is improved by above 10%.

Description

technical field [0001] The invention relates to a disc-type coreless permanent magnet direct current motor. Background technique [0002] The development status of electric vehicles is severely restricted by factors such as limited driving range, short service life, and excessive size and quality of batteries, making the industrialization process of pure electric vehicles difficult. Fuel cell vehicles are also in their infancy. Many technologies Performance is not stable yet. Therefore, hybrid vehicles have become a transitional product between internal combustion engine vehicles and electric vehicles, which can not only give full play to the advantages of existing internal combustion engine technology, but also give full play to the advantages of motor drive without pollution. As the best technological breakthrough at this stage, hybrid electric vehicles already have the application foundation and industrialization conditions. Not only can it greatly save fuel, but it can...

Claims

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Application Information

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IPC IPC(8): H02K21/24H02K3/04
Inventor 郑祐宗
Owner 浙江义阳光电科技有限公司
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