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

Control system and control method for permanent magnet synchronous motor

A permanent magnet synchronous motor and control system technology, which is applied in the control system, vector control system, motor generator control, etc., can solve the problems of destroying the performance of the control system, oscillation of the control system, and affecting the control accuracy of the system, so as to achieve high adjustment accuracy , weaken high-frequency chattering, and improve the effect of steady-state accuracy

Inactive Publication Date: 2016-12-07
JIANGSU UNIV OF SCI & TECH
View PDF2 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the existence of sliding mode chattering will affect the control accuracy of the system on the one hand, and on the other hand will cause the control system to oscillate, destroying the performance of the control 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
  • Control system and control method for permanent magnet synchronous motor
  • Control system and control method for permanent magnet synchronous motor
  • Control system and control method for permanent magnet synchronous motor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] The present invention will be further explained below in conjunction with the accompanying drawings.

[0020] Such as Figure 1~2 As shown, taking the vertical packaging machine system as an example, the motor drives the knife to cut the packaging film. The permanent magnet synchronous motor control system adopted in this embodiment includes a main circuit and a control circuit, and the control circuit includes a position detection circuit, a speed control outer loop module, a torque control inner loop module, a current loop module and a space vector pulse width modulation module , the position detection circuit first detects the rotor position, and then calculates the angular velocity according to the rotor position, and transmits the calculated angular velocity to the speed control outer loop module, compares the calculated angular velocity with the given speed signal and adjusts it. The final result is output to the torque control inner loop module, and the adjusted...

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 control system for a permanent magnet synchronous motor. The control system comprises a main circuit and a control circuit, wherein the control circuit comprises a position detection circuit, a rotary speed control outer loop module, a torque control inner loop module, a current loop module and a space vector pulse width modulation module. An integral type variable index sliding mode variable structured controller is added in the rotary speed control outer loop module; and the integral type variable index sliding mode variable structured controller which is positioned in the rotary speed outer loop takes a difference between a rotor angular speed and a given rotary speed as an input signal to output a torque instruction control signal. The invention also provides a control method for the permanent magnet synchronous motor. According to the control system and the control method, the integral type variable index sliding mode variable structure control method is applied to the vector control of the permanent magnet synchronous motor, so that the sliding mode buffeting can be effectively lowered, the robustness of the system is enhanced, and the dynamic response quality of the system is improved.

Description

technical field [0001] The invention belongs to the field of permanent magnet synchronous motor control, in particular to a permanent magnet synchronous motor control system and a control method thereof. Background technique [0002] Vector control is a high-performance AC frequency conversion speed regulation technology, which is widely used in frequency conversion speed regulation of permanent magnet synchronous motors. The basic idea of ​​vector control is to decompose the stator current into excitation component and torque component through coordinate transformation, so as to decouple the rotor flux linkage and electromagnetic torque and speed up the response speed of the system. According to different application fields, the main methods of vector control of permanent magnet synchronous motor are: id=0 control, constant flux linkage control, maximum torque current control, field weakening control, etc. In recent years, research on advanced control strategies has been v...

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): H02P21/00
CPCH02P21/0007H02P21/0017
Inventor 高键吴祥瑞
Owner JIANGSU 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