Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Spliced stator structure with extremely-low cogging torque

A technology of cogging torque and stator structure, applied in the direction of magnetic circuit shape/style/structure, electrical components, electromechanical devices, etc. Magnetic performance, simple assembly effect

Inactive Publication Date: 2019-02-15
SHANGHAI AEROSPACE CONTROL TECH INST
View PDF2 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ironless motors are mainly used in equipment with small size, high speed, small torque and high precision, but not suitable for equipment with high torque requirements

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Spliced stator structure with extremely-low cogging torque
  • Spliced stator structure with extremely-low cogging torque
  • Spliced stator structure with extremely-low cogging torque

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] The present invention will be further described below through specific embodiments in conjunction with the accompanying drawings. These embodiments are only used to illustrate the present invention, and are not intended to limit the protection scope of the present invention.

[0024] Such as figure 1 and figure 2 As shown, a stator structure with extremely low cogging torque provided by the present invention includes: a stator outer part 1 of an annular structure and a stator inner part 2 of an annular structure; the inner surface of the stator outer part 1 is circumferentially spaced A plurality of internal teeth 11 are provided; stator notches 12 are formed between adjacent internal teeth 11; closed. The outer surface of the stator outer part 1 is provided with a plurality of protruding parts 21 inserted into the stator slots 12 at intervals along the circumferential direction to prevent the stator outer part 1 and the stator inner part 2 from sliding.

[0025] In...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a stator structure with extremely-low cogging torque. The stator structure comprises a stator outer-side part and a stator inner-side part, wherein a plurality of inner teeth are arranged on an inner surface of the stator outer-side part at intervals along a circumferential direction, a stator groove opening is formed between adjacent inner teeth, and the stator inner-sidepart is fixedly arranged in the stator outer-side part and is used for making the stator groove opening closed. A stator iron core is designed to form a spliced structure; and by the structure, the cogging torque can be reduced to be extremely low, the defect of slotless motor also can be prevented, and the performance requirements of different output torque rotational speeds can be met.

Description

technical field [0001] The invention relates to the field of permanent magnet motors, in particular to a spliced ​​stator structure with extremely low cogging torque. Background technique [0002] At present, the methods of stator chute, rotor oblique pole or slotting of stator teeth are mainly used at home and abroad to weaken the cogging torque; there are also many experts and scholars who have proposed a variety of methods to weaken the cogging torque, such as: unequal thickness air gap method, Different pole arc coefficient combination method, magnetic pole slotting method, magnetic pole segmentation method, etc. The method of stator chute will be very troublesome in engineering production. The chute cannot be automatically wound by machine, and the slot filling rate is low, so it is not suitable for mass production. The method of oblique poles of the rotor needs to make the magnetic steel into a special shape, and the magnetic steel needs to be pasted on the silicon st...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H02K1/14
CPCH02K1/148
Inventor 张登明曾凡铨崔业兵董会敏陈树恒
Owner SHANGHAI AEROSPACE CONTROL TECH INST
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com