Self-setting method in vector control system of asynchronous motor

An asynchronous motor, vector control technology, applied in vector control systems, motor generator control, electronic commutation motor control and other directions, can solve the problem of difficult compensation or correction of errors

Inactive Publication Date: 2012-10-03
北京建筑工程学院
View PDF4 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Whether it is the steady-state model method or the dynamic model method, it is proposed based on some conditions, and the existing errors are difficult to compensate or correct.

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
  • Self-setting method in vector control system of asynchronous motor
  • Self-setting method in vector control system of asynchronous motor
  • Self-setting method in vector control system of asynchronous motor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0093] A verification method for chip electrostatic protection and a verification device provided by the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art can also adopt other alternative ways to implement for some known technologies; and the accompanying drawings It is only for more specific description of the embodiments, but not intended to specifically limit the present invention.

[0094] The present invention covers any alternatives, modifications, equivalent methods and schemes made on the spirit and scope of the present invention. In order to provide the public with a thorough understanding of the present invention, specific details are set forth in the following preferred embodiments of the present invention, but ...

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 self-setting method in a vector control system of an asynchronous motor, which mainly adopts rotor time constant self testing under the magnetic circuit saturation. The self-setting method aims to achieve the effect of controlling the performance in a speed control system of the vector control asynchronous motor through the rotor time constant self testing under the magnetic circuit saturation. The rotor time constant self testing is carried out through a voltage type inverter. When direct current voltage is excited and added, the current of a rotor circuit of the asynchronous motor is zero, and the current of a stator is a steady-state current value Id. If a transient process occurs in the current of the stator, the current initial value of the rotor circuit is not zero. Therefore, the zero current of a rotor can be determined through the characteristic, so that a rotor time constant is obtained by adopting a least square method. The self-tested rotor time constant particularly considers the measurement and the acquisition of the rotor time constant under the magnetic circuit saturation and the dead-time compensation, so that the performance of the vector control system of the asynchronous motor is improved.

Description

technical field [0001] The invention relates to motor control technology, and relates to a self-tuning method in an asynchronous motor vector control system. Background technique [0002] The speed regulation and control technology of AC asynchronous motor has made great progress after being combined with microcomputer control and power electronics technology. The electromagnetic process that was not easy to measure or control in the past can now be realized through online measurement, calculation analysis and control. Regulatory control of various requirements, various principles and technical solutions. AC-DC-AC frequency conversion, AC-AC frequency conversion, pulse width modulation, multi-level and other technologies provide many new possibilities for the speed regulation and control of AC motors. The proposal and implementation of new control methods such as vector control and direct torque control have laid the foundation for high-performance control of asynchronous m...

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): H02P21/14H02P21/16
Inventor 马鸿雁
Owner 北京建筑工程学院
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