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

Direct torque control system and method for transverse flux switched reluctance motor

A technology of switched reluctance motor and direct torque control, which is applied in the direction of electronically commutated motor control, control system, vector control system, etc. Torque ripple operation problem, good operating condition level, high precision effect

Inactive Publication Date: 2020-02-21
NANJING UNIV OF SCI & TECH
View PDF1 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the direct torque control system, for the traditional PI controller in the outer loop speed loop, since the two parameters of the proportional coefficient and the differential coefficient are generally fixed, in the external complex environment, the traditional PI controller is for The response speeds of loads and disturbances are different under different conditions, which will slow down the dynamic response of the entire control system and reduce the dynamic performance of the system

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
  • Direct torque control system and method for transverse flux switched reluctance motor
  • Direct torque control system and method for transverse flux switched reluctance motor
  • Direct torque control system and method for transverse flux switched reluctance motor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0032] The technical scheme of the present invention is described in detail below in conjunction with accompanying drawing:

[0033] The invention uses direct torque control to control a four-phase transverse flux switched reluctance motor through a given torque, so as to further reduce the torque ripple effectively while increasing the torque density.

[0034] From image 3 It can be seen from the figure that information such as phase current i and rotor position angle θ of the transverse flux switched reluctance motor during operation will be fed back to the control system, and then the known phase current i and rotor position angle θ can be obtained by looking up the table Calculate the flux linkage and torque of each phase of the motor. Then through the transformation, the flux vector amplitude ψ of the motor can be obtained S , the vector angle δ and the total electromagnetic torque T. Then the magnitude of the flux linkage vector ψ S and the total electromagnetic tor...

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 direct torque control system and method for a transverse flux switched reluctance motor. The method is used for reducing torque pulsation during operation of the transverse flux switched reluctance motor, and comprises the following steps: firstly, a position detection module detects position information theta, a current detection module detects current i, and a speed calculation module calculates actual rotating speed omega r through the position information theta; a torque estimation module and a flux linkage estimation module calculate actual torque T of each phaseaccording to the theta and i, and obtain switching signals through flux linkage coordinate transformation, vector calculation, sector judgment, a hysteresis comparator and a vector switch table; andfinally, a power converter controls the transverse flux switched reluctance motor according to the switching signals.

Description

technical field [0001] The invention relates to the technical field of switched reluctance motor control, in particular to a direct torque control system and method for a transverse flux switched reluctance motor. Background technique [0002] Switched reluctance motor (Switched Reluctance Motor, SRM) is the motor with the simplest structure. Compared with other types of motors, its drive system has many unique advantages. First of all, the structure of the motor body is simple. There are only windings on the stator poles, and there are no windings on the rotor and no permanent magnets. This structure is especially suitable for high-speed driving, high temperature, vibration and other harsh occasions. Secondly, the switching element of the switched reluctance motor is connected in series with the winding, thus avoiding the danger of two switching elements passing through, thus improving the reliability of the drive system. In addition, the switched reluctance motor also has...

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 Applications(China)
IPC IPC(8): H02P21/30H02P21/14H02P25/098
CPCH02P21/141H02P21/30H02P25/098
Inventor 周鑫昇颜建虎池松周怡
Owner NANJING UNIV OF SCI & TECH
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