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

A synchronous/asynchronous compound double fundamental frequency motor

A compound, fundamental frequency technology, applied in the field of vehicle electric transmission, can solve the problems of large capacity and high cost of motors and controllers

Active Publication Date: 2018-09-25
BEIJING INSTITUTE OF TECHNOLOGYGY
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to meet the power demand in the high-speed area, the design of the asynchronous motor for vehicles must have a certain degree of power margin, which results in excessively large capacity and high cost of the motor and controller

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
  • A synchronous/asynchronous compound double fundamental frequency motor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] The present invention provides a synchronous / asynchronous composite dual-base frequency motor, as attached figure 1 As shown, it specifically includes: stator core 1, stator winding 2, squirrel cage 3, permanent magnet 4, rotor core 5, magnetic isolation slot 6 and rotating shaft 7; wherein, the rotor core 5 is arranged around the rotating shaft 7 , the stator core 1 is arranged outside the rotor core 5; the permanent magnets 4 are embedded inside the rotor core 5 and arranged radially along the radial direction of the rotating shaft 7; There are two grooves, guide bars are arranged in the grooves, and short-circuit rings are arranged at both ends of the rotor core in the axial direction, forming a squirrel cage 3 with the guide bars.

[0014] In a preferred embodiment of the present application, a magnetic isolation slot is provided at one end of the permanent magnet 4 close to the rotating shaft 7 .

[0015] In a preferred embodiment of the present application, the s...

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 the field of vehicle electric drive technologies, in particular to a synchronous / asynchronous combined type double fundamental frequency motor. The synchronous / asynchronous combined type double fundamental frequency motor comprises a stator winding, wherein a double fundamental frequency current is supplied into the stator winding; a rotor adopts a tangential structure with built-in permanent magnets, and designs corresponding magnetism isolating grooves for reducing a magnetic leakage coefficient; in addition, grooves are formed in the surface of the rotor, guide bars are embedded in the grooves, and the guide bars are short-circuited to form a squirrel cage by means of short-circuit rings at both ends of the rotor. In the driving process, the synchronous motor and asynchronous motor characteristics are utilized simultaneously, and a motor driving system is ensured to satisfy the tractive characteristic requirement of electric vehicles through double fundamental frequency winding current control. The synchronous / asynchronous combined type double fundamental frequency motor provided by the invention has the advantage of high power density, can significantly reduce the size of a motor controller under the condition of satisfying the tractive characteristic requirement of electric vehicles, further improves power density of the motor driving system, and is a good choice of motor drive system for the electric vehicles.

Description

technical field [0001] The invention belongs to the technical field of vehicle electric transmission, and in particular relates to a synchronous / asynchronous compound double fundamental frequency motor. Background technique [0002] At present, the drive motors for electric vehicles are generally permanent magnet synchronous motors or asynchronous motors, but due to the limitations of their own characteristics, the torque-speed characteristics of these two motors cannot completely match the traction characteristics of the vehicle, and it is difficult to meet the requirements of the further development of electric vehicles. Demand for higher power density in motor drive systems. [0003] The permanent magnet synchronous motor weakens the permanent magnet magnetic field by controlling the direct-axis demagnetization magnetomotive force generated by the direct-axis current component, thereby maintaining the balance of the motor terminal voltage during high-speed operation. How...

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): H02K1/27H02K17/16H02P21/00
CPCH02K1/22H02K1/274Y02T10/64
Inventor 张承宁刘海鹏董玉刚杨永喜
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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