PMSM (permanent magnet synchronous motor) inductance parameter identification method based on high-frequency rotation voltage injection

A permanent magnet synchronous motor, high-frequency rotating voltage technology, applied in the direction of motor generator control, electronic commutation motor control, control generator, etc., can solve the problem of torque accuracy decline, system stability deterioration, and condition changes Changes and other problems, to achieve the effect of simple, reliable and strong versatility of the algorithm

Active Publication Date: 2019-08-09
NANJING UNIV OF POSTS & TELECOMM
View PDF6 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these parameters will change with the change of operating conditions, especially the dq-axis inductance is not only affected by the saturation effect caused by the stator current, but also by the cross saturation. When the inductance changes greatly, the torque accuracy will drop, System stability deterioration and other problems, so it is necessary to identify the inductance parameters of the motor

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
  • PMSM (permanent magnet synchronous motor) inductance parameter identification method based on high-frequency rotation voltage injection
  • PMSM (permanent magnet synchronous motor) inductance parameter identification method based on high-frequency rotation voltage injection
  • PMSM (permanent magnet synchronous motor) inductance parameter identification method based on high-frequency rotation voltage injection

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:

[0026] The present invention is mainly a permanent magnet synchronous motor inductance parameter identification method based on high-frequency rotating voltage injection, which first injects a high-frequency sinusoidal rotating voltage signal into the dq axis, and obtains the amplitude of the high-frequency response current corresponding to the frequency of the dq axis , calculating the dq-axis inductance according to the amplitude of the high-frequency component in the high-frequency response current of the dq-axis.

[0027] The control system used in this identification method mainly includes: three-phase inverter, space vector pulse width modulation unit, photoelectric encoder unit, three-phase stationary-two-phase stationary coordinate transformation unit, two-phase stationary-two-phase rotational coordinate transformation unit , Two-phase rota...

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 PMSM (permanent magnet synchronous motor) inductance parameter identification method based on high-frequency rotation voltage injection, and the method comprises the steps: injecting a high-frequency sine rotation voltage into a dq axis, obtaining a high-frequency response current signal of the dq axis, and calculating the inductance of the dq axis according to the amplitude of a response signal component. The method is easy to implement, no redundant hardware equipment needs to be added, the frequency and the amplitude of the high-frequency sinusoidal rotation voltage injected into the motor are easy to control, and the d-axis inductance and the q-axis inductance of the motor can be obtained through online identification.

Description

technical field [0001] The invention relates to a method for identifying an inductance parameter of a motor, in particular to a method for identifying an inductance parameter of a permanent magnet synchronous motor, which belongs to the technical field of motor control. Background technique [0002] Permanent magnet synchronous motor has many advantages such as small size, high power factor, high efficiency, wide range of speed regulation, reliable operation, easy maintenance, etc., so it is widely used in the field of electric vehicles, servo control, household appliances and other high performance requirements field. Advanced control algorithms such as maximum torque current ratio control, field weakening control, and speed sensorless control used in the PMSM drive system must accurately know the motor parameters. However, these parameters will change with the change of operating conditions, especially the dq-axis inductance is not only affected by the saturation effect c...

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): H02P21/14H02P25/022
CPCH02P21/14H02P25/022H02P2207/05
Inventor 郭鸿浩吕鹏程曹睿冷慧
Owner NANJING UNIV OF POSTS & TELECOMM
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