Permanent magnet synchronous motor used for air conditioner compressor

A technology for permanent magnet synchronous motors and air-conditioning compressors, which is applied to synchronous motors with stationary armatures and rotating magnets, magnetic circuit rotating parts, magnetic circuit shape/style/structure, etc., which can solve the problem of excessive electromagnetic noise, It is difficult to obtain low-speed operation capability, large leakage reactance and other issues

Inactive Publication Date: 2013-05-01
ZHEJIANG TOP MOTORING TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The permanent magnet synchronous motor in the form of concentrated winding has the advantages of simple manufacturing process and small axial space size. It will produce a large extreme leakage reactance, so it is difficult to obtain good low-speed operation ability (especially low-speed position sensorless start-up ability), the speed of the existing concentrated winding air-conditioning compressor can only be above 15% of the maximum speed and low-speed load running, and it is difficult to obtain a high power factor, and the electromagnetic noise is relatively large

Method used

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  • Permanent magnet synchronous motor used for air conditioner compressor
  • Permanent magnet synchronous motor used for air conditioner compressor
  • Permanent magnet synchronous motor used for air conditioner compressor

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Embodiment Construction

[0020] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific illustrations.

[0021] Such as figure 1 As shown, the air-conditioning compressor permanent magnet synchronous motor of the present invention includes a rotor 100 and a stator 200, the rotor 100 is an embedded magnetic steel structure, and the rotor punch 110 is provided with the same pole number as the motor. Through grooves 120, the through grooves 120 are connected by narrow strips 130 (see image 3 ); the inner circular arc of the teeth of the stator punching plate 210 is provided with symmetrical chamfering 220 (see figure 2 ).

[0022] In the present invention, the through groove 120 is a V-shaped or one-shaped groove; the width of the narrow strip 130 is 1-2 times the thickness of the rotor punch 110 .

[0023] In the present invention, the arc lengt...

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Abstract

The invention aims to disclose a permanent magnet synchronous motor used for an air conditioner compressor. The permanent magnet synchronous motor comprises a rotor and a stator, wherein the rotor is in an embedded magnetic steel structure; a rotor sheet is provided with through grooves of which the number is the same as that of poles of the motor; the through grooves are connected through narrow strips; and symmetrical chamfered edges are arranged in an inner arc of teeth of the stator sheet. Compared with the prior art, with the adoption of groove-shaped design of the stator and the rotor in a concentrated winding, the sine property of the concentrated winding motor can be improved, and leakage reactance can be reduced, so as to obtain higher power factors and efficiency; and in addition, the tooth socket torque can be reduced, the low-speed loading capacity is improved when the position of the air conditioner is not controlled, and the purposes of the invention can be realized.

Description

technical field [0001] The invention relates to a synchronous motor, in particular to a permanent magnet synchronous motor for an air conditioner compressor. Background technique [0002] The electric air conditioner compressor motor is used as the drive motor of the air conditioner, and its working efficiency and low-speed operation ability are related to the benefits of social energy saving and emission reduction. [0003] The permanent magnet synchronous motor in the form of concentrated winding has the advantages of simple manufacturing process and small axial space size. It will produce a large extreme leakage reactance, so it is difficult to obtain good low-speed operation ability (especially low-speed position sensorless start-up ability), the speed of the existing concentrated winding air-conditioning compressor can only be above 15% of the maximum speed and low-speed load running, and it is difficult to obtain a high power factor, and the electromagnetic noise is r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K21/14H02K1/27
Inventor 袁沛海
Owner ZHEJIANG TOP MOTORING TECH
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