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

Straight slot staggered pole structure suitable for large permanent magnet synchronous motor

A permanent magnet synchronous motor, a large-scale technology, applied in synchronous machine parts, magnetic circuit shape/style/structure, magnetic circuit rotating parts, etc. Wave potential, attenuating additional torque, reducing effects of electromagnetic vibration and noise

Active Publication Date: 2018-01-09
BEIJING MINGCHENG TECH DEV
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] For large self-starting permanent magnet synchronous motors or permanent magnet synchronous motors, the stator coils use relatively hard flat copper wires. If the chute technology is used, it will be difficult to realize in the process

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
  • Straight slot staggered pole structure suitable for large permanent magnet synchronous motor
  • Straight slot staggered pole structure suitable for large permanent magnet synchronous motor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.

[0018] Such as figure 1 with figure 2 As shown, the rotor core 1 of the embodiment of the present invention is used to assemble with the straight slot stator core, and the stator core is provided with stator slots (not shown in the figure), and the rotor core 1 includes multiple slice rotor punch 2, such as figure 2 As shown, permanent magnet slots 3 for accommodating permanent magnets are evenly distributed on the rotor punch 2, and the permanent magnet slots 3 of a part of the rotor punch 2 are aligned and stacked together to form the first half of the rotor core (not shown in the figure ), the permanent magnet slots 3 of the other part of the rotor punch 2 are aligned and laminated together to form the second half-rotor core (not shown in the figure), the permanent magnet slots ...

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 large-scale PMSM rotor iron core formed by stacking a plurality of rotor punching sheets; the rotor iron core is uniformly provided with permanent magnets arranged in a staggered manner according to N-S polarity; the permanent magnets can be attached on a rotor iron core surface and can be nested in the rotor iron core; a whole rotor iron core is axially divided into two portions; magnetic pole arc center lines of certain rotor iron cores and magnetic pole arc center lines of other rotor iron cores are staggered with certain angle (staggered pole) in a periphery, and the angle equals to a half of an angle of two adjacent stator slots; a stator iron core matched with the pole staggered rotor iron core is a straight slot stator iron core formed by stacking a plurality of stator punching sheets; the straight slot is combined with the staggered pole so as to weaken tooth harmonic potential, and weaken additional torque caused by a tooth harmonic magnetic field, thus reducing motor electromagnetic vibration noises, and improving motor efficiency.

Description

technical field [0001] The invention relates to a rotor core and a motor with the rotor core, belonging to the technical field of motors. Background technique [0002] With the development of modern industry, the requirements for the operation accuracy and stability of various mechanical equipment are getting higher and higher. In addition, it is also required to reduce the environmental noise of work and life. The motor is the main power source of mechanical equipment. The vibration and noise of the motor are more and more concerned. Solving the vibration and noise of the motor is a must for motor designers and motor manufacturers. There are many reasons for the electromagnetic vibration noise of the motor, and there are many ways to weaken the harmonics and reduce the vibration noise, such as using short-distance windings for the stator, using magnetic slot wedges, etc. [0003] There are harmonics of various frequencies inside the motor. When the stator core adopts distr...

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
Patent Type & Authority Patents(China)
IPC IPC(8): H02K1/27H02K21/02
CPCH02K1/27H02K21/02
Inventor 孙德全王艳杰袁静国王鹏徐长山
Owner BEIJING MINGCHENG TECH DEV
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