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

Permanent magnet vernier linear motor for urban rail transits

A technology of urban rail transit and linear motors, which is applied in the fields of motors, rail transit, and electrical engineering. It can solve the problems of low-speed motion stability, large thrust fluctuation amplitude, affecting positioning and trajectory tracking accuracy, etc., and achieves large thrust transmission capacity and small size. Yoke size, material saving effect

Inactive Publication Date: 2012-07-18
SOUTHEAST UNIV
View PDF5 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it also has the obvious disadvantage of large thrust fluctuation amplitude, which directly affects the positioning and trajectory tracking accuracy, and undoubtedly brings low-speed motion stability problems in urban rail transit applications.

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
  • Permanent magnet vernier linear motor for urban rail transits
  • Permanent magnet vernier linear motor for urban rail transits
  • Permanent magnet vernier linear motor for urban rail transits

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] The present invention will be described below with reference to the accompanying drawings.

[0027] The invention provides a low-speed and high-thrust permanent magnet vernier linear motor for urban rail transit. It modulates the magnetic field through the action of the magnetic flux modulation pole on the primary teeth of the motor, which solves the problem of low thrust output capacity of the traditional linear motor at low speed. At the same time, the secondary permanent magnet adopts a special Halbach array, which can provide a larger effective magnetic field. Wave components and output thrust density, reduce the magnetic flux density of the secondary iron core yoke, reduce core loss. Therefore, the present invention improves the efficiency of the motor while improving the low-speed running stability of the linear motor for urban rail transit.

[0028] The motor includes a primary and a secondary; the primary of the motor includes a primary iron core, primary teeth...

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 relates to a permanent magnet vernier linear motor for urban rail transits, which comprises a motor primary (1), and a motor secondary (2) separated from the motor primary (1) through an air gap; the motor primary (1) comprises a flat primary iron core (3), an armature winding (5), flux modulation poles (6), wherein primary teeth (4) protruding out of the periphery of the primary iron core are arranged on the primary iron core (3), the armature winding (5) is wound on the primary teeth (4), and protruding small tooth portions on the primary teeth (4)are flux modulation poles (6), the motor primary (1) is mounted on a train; the motor secondary (2) comprises permanent magnets (7) and a secondary iron core (8), wherein permanent magnets (7) are embedded in the secondary iron core (8) along a horizontal direction in gaps with a same distance, and the motor secondary (2) is arranged on the train rail. The motor can improve the stability of the linear motor for urban rail transits during low velocity operation, the motor efficiency is improved, and high theoretical and practical values are provided.

Description

technical field [0001] The invention relates to the fields of electrician, motor and rail transit, in particular to a novel Halbach low-speed and high-thrust permanent magnet vernier linear motor suitable for urban rail transit. Background technique [0002] With the expansion of urban population and the continuous density of urban buildings, urban rail transit plays a very important role in the sustainable development of cities by virtue of its advantages of convenience, environmental protection, energy saving, safety and large transportation capacity. At the same time, the research on traction motors for urban rail transit has also received more and more attention from scholars in related fields. [0003] In urban rail transit applications, traction motors mainly use two technical approaches: rotary motors and linear motors. Urban rail trams using linear motors directly convert electrical energy into mechanical energy for linear motion without any transmission device for...

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): H02K41/02
Inventor 樊英黄进金小香於锋
Owner SOUTHEAST UNIV
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