Novel permanent-magnet machine

A permanent magnet motor, a new type of technology, applied in the direction of magnetic circuit static parts, magnetic circuit shape/style/structure, etc., can solve complex problems, and achieve the effect of improving starting performance, simple structure, and reducing starting torque

Inactive Publication Date: 2006-07-12
李国坤
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

There have been literatures introducing the use of some extremely complicated technical means and mea

Method used

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  • Novel permanent-magnet machine
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Example Embodiment

[0009] The present invention is explained below in conjunction with accompanying drawing:

[0010] attached figure 2 It is an embodiment of the present invention. The difference between the present invention and the prior art can be seen more clearly.

[0011] attached figure 1 It is a partial cross-sectional view of the stator part of the existing permanent magnet motor. The stator 1 is provided with alternate teeth 2 and slots 3, and the space of the slot 3 is used for placing windings.

[0012] attached figure 2 It is a partial sectional view of the stator part of the permanent magnet motor of the present invention, from figure 2 It can be seen that the present invention is different from the prior art only in that a metal thin-walled ring 5 closely contacting with the stator for magnetic conduction is arranged at the inner circle of the stator 1, and the axial length of the ring is equal to the axial length of the stator. The tight contact mentioned here refers to ...

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Abstract

The invention relates to an improved p-m motor, which comprises a rotor with permanent magnet, a stator with winding, and a thin-wall magnetic-conduction metal ring on inner circle of stator with axial length same as the stator.

Description

technical field [0001] The invention relates to a permanent magnet motor, in particular to an improved permanent magnet motor. Background technique [0002] Permanent magnet motors are widely used in the industry because of their advantages such as large torque and relatively simple structure. However, because the permanent magnet motor has a large negative torque when starting, it is difficult to start. According to the current research, the negative torque of the permanent magnet motor is mainly composed of three parts: salient pole effect torque, power generation braking torque and reluctance torque. For the content of this aspect, please refer to "Rare Earth Permanent Magnet Motor" A book (Li Zhongming et al., National Defense Industry Press, July 1999, first edition). How to reduce the negative torque when the permanent magnet motor starts is a problem that has been trying to be solved in this field. There have been literatures introducing the use of some extremely c...

Claims

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Application Information

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IPC IPC(8): H02K1/18H02K1/12
Inventor 李国坤崔国平姬全胜沈积强李珂王朝贤尹一伟陈朝闻
Owner 李国坤
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