Permanent magnet motor

A permanent magnet motor, center-of-circle technology, which is applied to magnetic circuits, synchronous motors with stationary armatures and rotating magnets, and electric components, etc. Improved performance and smooth operation

Inactive Publication Date: 2013-08-21
GUANGDONG WELLING ELECTRIC MACHINE MFG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These methods can reduce the motor cogging torque and reduce the torque ripple, which has a certain effect on the vibration and noise of the motor, but these methods result in more complicated processes, increased costs, and reduced motor performance, etc.

Method used

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Embodiment Construction

[0015] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0016] Please refer to Figure 1 to Figure 5 , is a permanent magnet motor 100 of the present invention, which includes a stator 10 and a rotor 30 located in the central hole 20 of the stator 10 . The central hole 20 has a center O. There is a certain air gap between the stator 10 and the rotor 30 . The permanent magnet motor 100 of the present invention may be a permanent magnet brushless motor or a permanent magnet synchronous motor, or a permanent magnet brushless synchronous motor.

[0017] The stator 10 includes a stator core 1 and a stator winding 2 . The ...

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Abstract

The invention discloses a permanent magnet motor which comprises a stator with a central hole and a rotor located in the central hole. A stator core is provided with a plurality line grooves for containing stator windings and coiling teeth located between adjacent line grooves, the tail end of each coiling tooth is further provided with a pair of wedge-shaped portions respectively extending to directions of the line grooves, each wedge-shaped portion is provided with an inner end face facing the rotor, each inner end face comprises an arc section located in the middle of the inner end face, the central hole is provided with a circle center, the radian of an arc face is larger than the radian of the central hole, and the circle center of the arc face does not coincide with that of the central hole. Compared with the prior art, the permanent magnet motor has the advantages of effectively improving performance of the permanent magnet motor through the characteristic that the radian of the arc section does not coincide with that of the central hole of the stator, and reducing machining requirements for the rotor due to the fact that only the stator is machined.

Description

technical field [0001] The invention relates to a permanent magnet motor. Background technique [0002] According to the different permanent magnet materials used in the rotor of the permanent magnet motor, the permanent magnet materials used in the motor of the compressor are divided into two categories: a type of NdFeB permanent magnet material motor and a ferrite permanent magnet material motor. [0003] In the prior art, rare earth Nd-Fe-B is mostly used as the permanent magnet material of the motor of the compressor, such as Chinese patent application number CN201010146673.X and Chinese patent application number CN200780013725.2. With the scarcity of rare earth materials, resulting in An expensive question. [0004] Although Chinese Patent Application No. CN02138148.8 and Chinese Patent Application No. CN201120063280.2 adopt ferrite structures, the structures mentioned in the patents all have the disadvantages of demagnetization, low utilization of magnetic energy, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/14H02K1/27
CPCH02K21/16H02K29/03H02K1/2766H02K2213/03H02K1/146H02K1/02
Inventor 袁榜王飞龚文胜陈金涛诸自强
Owner GUANGDONG WELLING ELECTRIC MACHINE MFG
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