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Method and instrument for profiling magnetic flux

A magnetic flux density, stator technology, applied in the direction of electrical components, electromechanical devices, windings, etc., can solve the problems of lack of manufacturing process and connection process, weak electrical characteristics, etc., to reduce size and weight, reduce heat generation, and easy to manufacture Effect

Inactive Publication Date: 2003-04-02
贾默・阿拉梅基
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the problem is that compared with other methods, its electrical characteristics are weak, and it lacks a suitable manufacturing process and connection process

Method used

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  • Method and instrument for profiling magnetic flux
  • Method and instrument for profiling magnetic flux
  • Method and instrument for profiling magnetic flux

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] Figure 1a shows a stator slot 21' used in the prior art, in which the shape of the stator slot 21' is partially enlarged. The magnetic flux density distributed in the air gap Is is indicated by the line 26'. Appendix 1b shows a tooth 22 which extends from the stator laminations 20 on both sides of the stator slot 21 into the rotor bore 24 . The advantageous effect of the teeth on the distribution of the magnetic flux density can be seen from the magnetic flux lines 26 .

[0027] attached by Figure 1c As can be seen from the graph shown, the toothed stator teeth 22 provide a much more uniform flux distribution (b) than the conventional approach (a). The stator device 20 has some slots, the shape of which is shown in Figure 1b. Since the influence of the permeance harmonics is reduced, the heating effect of the permeance harmonics on the rotor 10 will not be too great. However, this method still suffers from some of the disadvantages mentioned above.

[0028] Accompan...

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PUM

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Abstract

An electric machine according to the invention comprises a rotor means (10) and a stator means (20) surrounding the rotor means having radially extending slots (21). Slot lock components (14) are provided in at least some of said slots. The slot lock extends in said slot essentially to the periphery of the rotor bore of the stator means. The relative permeability ( u r) and the saturated flux density of the slot lock means is essentially good. In the inventive method the density of magnetic flux effecting on the rotor means surface is made more uniform by slot lock components described above.

Description

field of invention [0001] The present invention relates to a method for use in an electric machine, in particular a method for installing a slot lock device in a stator slot. Furthermore, the invention relates to an electric motor with a special slot lock device. The invention also relates to a slot lock for an electric motor. Background of the invention [0002] In electric machines, especially those known as solid rotor machines, there is a loss on the surface of the rotor caused by harmonics of the magnetic flux generated between the rotor and the stator. Losses reduce the efficiency of the motor and create overheating problems. Figure 1a schematically shows the shape of the magnetic flux density and its non-uniform distribution in a prior art motor. [0003] Referring to the simplified figure 1b, the above-mentioned problems can be solved by adding a special stator tooth on the stator plate of the solid rotor motor. This method evens out the flux across the rotor sur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K3/493
CPCH02K3/493Y02P80/30
Inventor 贾默·阿拉梅基J·皮尔赫内J·胡庞内
Owner 贾默・阿拉梅基
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