Built-in rotor of surface concept permanent-magnet machine

A permanent magnet motor, surface technology, applied in the direction of magnetic circuit rotating parts, magnetic circuit shape/style/structure, etc., can solve the problems of complex structure permanent magnet shape, increased rotor cost, increased surface loss, etc., to avoid surface Loss, low processing cost, and the effect of improving reliability

Inactive Publication Date: 2008-02-13
SHANGHAI UNIV
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The shape of the permanent magnet of this structure is complicated, the processing cost is large, and it leads to the increase of the cost of the rotor and the increase of the surface loss

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
  • Built-in rotor of surface concept permanent-magnet machine
  • Built-in rotor of surface concept permanent-magnet machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] The built-in rotor of the surface concept permanent magnet motor of the present invention will be further described in detail in conjunction with the accompanying drawings and a preferred implementation example:

[0028] The surface-type rotor in the prior art is shown in FIG. 1 (taking a four-pole motor as an example), tile-shaped N poles 3 and S poles 1 are alternately placed on the surface of the rotor core 2 .

[0029] The built-in rotor of the surface concept permanent magnet motor of the present embodiment is as shown in Figure 2. Compared with the surface rotor structure, the number of permanent magnet blocks is reduced by half, the polarity is the same, and the shape is a regular rectangular permanent magnet 4 (N pole or S poles) are evenly distributed and embedded in the rotor core 7, and pits 5, 6 are set on both sides of each permanent magnet. The path of the direct-axis magnetic circuit is: Starting from the permanent magnet N pole 4, passing through the upp...

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

This invention relates to a built-in rotor of a surface-type concept permanent magnet motor, which replaces two heteropolarity magnets for each pair pole of a general motor with a homopolarity and regular shaped magnet of each pair pole to be inserted in the rotor core, pits are set on the core surfaces of the rotors at both sides of the magnets, so that the d-axis and the quadrature have the same reactance to play the role of a magnet-isolation bridge.

Description

technical field [0001] The invention relates to a rotor of a permanent magnet motor, in particular to a built-in rotor of a surface concept permanent magnet motor. Background technique [0002] Exploring and selecting a reasonable rotor structure is one of the core issues in the design of permanent magnet motors. It is of great significance to the simplification of the manufacturing process, the reduction of production costs, and the optimization of the design of high-performance permanent magnet motors. There are various rotor structures of permanent magnet motors. As a whole, the most commonly used types are Surface Mounted Permanent Magnet (SPM) rotor structure and Interior Permanent Magne (IPM) rotor structure. [0003] The characteristic of the surface rotor structure is that the salient pole ratio ρ=L q / L d =1, no reluctance torque, large equivalent air gap, small armature response, good dynamic performance, and is often used in servo motors and traction motors. Su...

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): H02K1/27
Inventor 黄苏融张琪谢国栋
Owner SHANGHAI UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap