Method and device for model predictive control of asynchronous motor

A technology of model predictive control and asynchronous motors, which is applied in the direction of motor generator control, AC motor control, control of electromechanical transmission devices, etc., and can solve problems such as poor practicability and complexity

Active Publication Date: 2021-09-14
NORTH CHINA UNIVERSITY OF TECHNOLOGY
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In short, most of these existing methods are relatively complicated and not very practical.

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
  • Method and device for model predictive control of asynchronous motor
  • Method and device for model predictive control of asynchronous motor
  • Method and device for model predictive control of asynchronous motor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0044] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0045] The present invention will be further described below in conjunction with accompanying drawing, as figure 1 As shown, it is a flow chart of an embodiment of the asynchronous motor model predictive control method provided by the present invention, including:

[0046] Step 101, according to the PI regulator of the outer ring speed, the step of generating the torque reference value includes:

[0047] Let the torque reference value be expressed as

[0048] by formula Calculate the torque command, where k p and k i are the proportional gain and integral gain in the PI regulator respectively, s represents the complex frequency, Indicates the given speed, ω r Indicates the actual speed.

[0049] Step 102, accor...

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 model predictive control method for an asynchronous motor, comprising: generating a torque reference value according to an outer ring rotational speed PI regulator; A mathematical model that generates an information variable of a flux linkage reference value and an information variable of a torque reference value; calculates a reference voltage vector according to the obtained information variable of the flux linkage reference value and the information variable of the torque reference value; The reference voltage vector is used to construct a cost function and perform rolling optimization to obtain an optimal voltage vector to drive each switching device of the inverter. The model predictive control method and device of the asynchronous motor provided by the present invention can realize the tracking control of the reference vector of the stator voltage within one control cycle, and solve the problem that the traditional model predictive control method uses torque and flux linkage amplitude of different dimensions as the control target , it is necessary to repeatedly debug the weight coefficients to achieve high-performance control of asynchronous motors.

Description

technical field [0001] The invention relates to the field of speed regulation control of asynchronous motors, in particular to a model predictive control method and device for asynchronous motors. Background technique [0002] Model predictive control is an online rolling optimization control algorithm. Due to its simple principle, easy handling of nonlinear constraints, and easy realization of multivariable control, it has attracted a large number of scholars to conduct extensive research on its application in the field of electric drives in recent years. . However, the control variables of the traditional scheme are electromagnetic torque and stator flux amplitude with inconsistent dimensions. In order to achieve good dynamic and static performance of the system under various working conditions, it is necessary to determine the appropriate weight coefficient through repeated simulations and experiments. , which greatly limits the versatility and practicability of the cont...

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): H02P21/00H02P27/08
CPCH02P21/0003H02P27/085
Inventor 张永昌张博越白宇宁
Owner NORTH CHINA UNIVERSITY OF TECHNOLOGY
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