A Current Control Method of Stator Permanent Magnet Memory Motor Based on Non-Permanent Magnet Flux Observer

A flux observer and memory motor technology, applied in the field of electric transmission, can solve the problems of inappropriate division of permanent magnet magnetization state, difficult selection of feedback gain matrix, complicated calculation and debugging, etc., so as to avoid frequent magnetization state adjustment or magnetization state adjustment Failed, robust, computationally simple effects

Active Publication Date: 2021-12-21
FUZHOU UNIV
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1) The permanent magnet flux linkage observer uses signals such as voltage, current, and speed to obtain the real-time permanent magnet flux linkage of the motor, which is complicated to calculate and debug;
[0004] 2) The stability and rapidity of the permanent magnet flux linkage adaptive law are easily affected by the motor parameters, and it is difficult to select a suitable feedback gain matrix;
[0005] 3) The observation accuracy of the permanent magnet flux linkage observer is also affected by the motor parameters. In order to obtain a better segmented magnetization adjustment effect, it is not appropriate to divide more permanent magnet magnetization states;

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 Current Control Method of Stator Permanent Magnet Memory Motor Based on Non-Permanent Magnet Flux Observer
  • A Current Control Method of Stator Permanent Magnet Memory Motor Based on Non-Permanent Magnet Flux Observer
  • A Current Control Method of Stator Permanent Magnet Memory Motor Based on Non-Permanent Magnet Flux Observer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0041] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0042] It should be pointed out that the following detailed description is exemplary and is intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0043] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combina...

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 current control method of a stator permanent magnet type memory motor based on a non-permanent magnet flux observer. According to the magnetization state of the permanent magnet, select k Permanent magnet flux linkage, and calculate the corresponding speed range; then given by the speed n * and the speed given at the previous moment n ** Determine the change direction of the given speed; n * Satisfied speed range determines the speed given n * The corresponding permanent magnet flux linkage; finally based on the speed given n * , the change direction of the given rotational speed and the flux linkage of the permanent magnet determine the magnetization process of the permanent magnet. The invention has the advantages of easy realization, strong robustness, avoiding frequent adjustment of magnetization state or even failure of adjustment of magnetization state, and the like.

Description

technical field [0001] The invention relates to the technical field of electric transmission, in particular to a current control method of a stator permanent magnet memory motor based on a non-permanent magnet flux observer. Background technique [0002] In order to realize the adjustment of the magnetization state of magnetization or demagnetization in different speed ranges of the stator permanent magnet memory motor, the permanent magnet flux linkage observer can be used to observe the permanent magnet flux linkage of the motor in real time. However, the current control strategy of the stator permanent magnet memory motor based on the permanent magnet flux observer has the following shortcomings: [0003] 1) The permanent magnet flux linkage observer uses signals such as voltage, current, and speed to obtain the real-time permanent magnet flux linkage of the motor, which is complicated to calculate and debug; [0004] 2) The stability and rapidity of the permanent magnet...

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): H02P21/22H02P21/28
CPCH02P21/22H02P21/28
Inventor 杨公德周扬忠
Owner FUZHOU UNIV
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