Rotor assembly and permanent magnet motor with same

A technology of rotors and components, applied in the direction of electric components, magnetic circuit rotating parts, magnetic circuits, etc., can solve the problems of low performance of permanent magnet motors, improve low-speed stability performance, reduce cogging torque and torque ripple, Noise reduction effect

Pending Publication Date: 2020-06-19
ZHUHAI GREE REFRIGERATION TECH CENT OF ENERGY SAVING & ENVIRONMENTAL PROTECTION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a rotor assembly and a permanent magnet motor with it, so as to solve the technical problem of low performance of the permanent magnet motor in the prior art

Method used

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  • Rotor assembly and permanent magnet motor with same
  • Rotor assembly and permanent magnet motor with same
  • Rotor assembly and permanent magnet motor with same

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Embodiment Construction

[0029] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0030] Such as figure 1 with figure 2 As shown, this embodiment provides a rotor assembly, including a plurality of rotors 10 . The rotor 10 includes a rotor core 11 and permanent magnets 14 . A plurality of installation slots 13 are provided on the outer peripheral surface of the rotor core 11 ; permanent magnets 14 are embedded in the installation slots 13 ; wherein, the permanent magnets 14 of two adjacent rotors 10 are arranged in dislocation.

[0031] In this embodiment, since the permanent magnets 14 of two adjacent rotors 10 are misplaced, two adjacent rotors 10 form a skewed pole structure, thereby effectively weakening the tooth harmonics and reducing the cogging torque and rotatio...

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Abstract

The invention provides a rotor assembly and a permanent magnet motor with the same. The rotor assembly comprises a plurality of rotors, each rotor comprises: a rotor iron core, wherein a plurality ofmounting grooves are formed in the outer circumferential surface of each rotor iron core; and permanent magnet embedded into the mounting groove, wherein the permanent magnets of two adjacent rotors are arranged in a staggered manner. By applying the technical scheme of the invention, the technical problem of low performance of the permanent magnet motor in the prior art can be solved.

Description

technical field [0001] The invention relates to the technical field of motors, in particular to a rotor assembly and a permanent magnet motor having the same. Background technique [0002] Compared with ordinary induction motors, permanent magnet motors have the advantages of small size, light weight, high power density, and easy control. The characteristics of high performance, high efficiency and high reliability of permanent magnet motor make it used in various occasions, especially in the home appliance industry. With the improvement of people's living standards, household products such as air conditioners and refrigerators have become popular. Compressors are the core components of refrigeration devices, and their energy efficiency, reliability, and automation are important indicators for achieving high efficiency, energy saving, and safety. Each performance index directly determines the various indexes of the compressor. [0003] Therefore, how to arrange the rotor a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K16/00H02K1/27H02K7/04H02K1/28
CPCH02K1/2706H02K1/28H02K7/04H02K16/00
Inventor 陈世国魏会军朱红伟刘靖王伟
Owner ZHUHAI GREE REFRIGERATION TECH CENT OF ENERGY SAVING & ENVIRONMENTAL PROTECTION
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