Low-loss mixed excitation internal rotor radial magnetic-suspension bearing

A hybrid excitation and magnetic bearing technology, applied in the direction of bearings, shafts and bearings, mechanical equipment, etc., can solve the problems of small axial length of permanent magnet magnetic rings, difficult processing and assembly, etc., to achieve low magnetic circuit reluctance and reduce loss. , The effect of improving the linearity of the current control characteristic

Inactive Publication Date: 2006-03-08
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
View PDF1 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The axial length of the permanent magnetic ring of this structur

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
  • Low-loss mixed excitation internal rotor radial magnetic-suspension bearing
  • Low-loss mixed excitation internal rotor radial magnetic-suspension bearing

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0016] figure 1 with figure 2 The longitudinal section and cross-sectional view of the radial magnetic bearing of the hybrid excitation inner rotor of the present invention are respectively given. The stator magnetic sleeve is divided into left and right parts. The left magnetic sleeve consists of the stator magnetic sleeve 16 placed on the outside of the stator non-magnetic sleeve 15; the right magnetic sleeve is composed of the magnetic sleeve 2 placed on the non-magnetic sleeve 3 The outer side is composed of a permanent magnet ring 1 embedded in the middle of the magnetic sleeve, and the magnetizing direction of the permanent magnet ring is axial magnetization. Under the premise that the air gap permanent magnet bias magnetic density remains unchanged, adjusting the thickness ratio of the non-magnetic sleeve and the magnetic sleeve can adjust the size of the magnetic ring and the working air gap bias magnetic field, so that the permanent magnet ring can be easily processed a...

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

A low loss mixed excitation rotor radial magnetic bearing, which contains rotor and rotor, wherein the stator containing right and left magnet conducting lining composed of magnet conducting lining and non magnet conducting lining, permanent magnet cup, left and right stator iron core and electric excitation windings. Said invention has advantages of quick response speed, low excitation loss and easy assembling.

Description

1. Technical field [0001] The hybrid excitation inner rotor radial magnetic bearing of the invention belongs to the inner rotor radial magnetic bearing of the non-contact magnetic bearing type. 2. Background technology [0002] Magnetic suspension bearings (referred to as magnetic bearings) can be divided into three types: electric excitation magnetic bearings, permanent magnet excitation magnetic bearings and hybrid excitation magnetic bearings (permanent magnet and electric excitation hybrid) according to the way the magnetic force is provided. Electrically excited magnetic bearings have the disadvantages of large current, large power consumption, and poor linearity of force-current control characteristics. Permanent magnetic bearings are passive magnetic bearings, which have the advantage of low power consumption, but poor control accuracy. [0003] The hybrid excitation magnetic bearing uses the permanent magnetic field as the bias magnetic field, which reduces the copp...

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): F16C32/04
Inventor 朱德明严仰光王慧贞张方华
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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