Unlock instant, AI-driven research and patent intelligence for your innovation.

A single current sensor predictive control method for permanent magnet synchronous motor

A permanent magnet synchronous motor, predictive control technology, applied in motor control, motor generator control, electronic commutation motor control and other directions, can solve the problem of noise current reconstruction blind area and other problems, achieve easy acquisition, small calculation amount, simple structure Effect

Active Publication Date: 2021-07-16
BEIJING INSTITUTE OF TECHNOLOGYGY
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem of noise and current reconstruction blind area existing in the phase current reconstruction process in the existing permanent magnet synchronous motor single current sensor predictive control, the present invention provides a permanent magnet synchronous motor single current sensor predictive control method, the method is specific Include the following steps:

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 single current sensor predictive control method for permanent magnet synchronous motor
  • A single current sensor predictive control method for permanent magnet synchronous motor
  • A single current sensor predictive control method for permanent magnet synchronous motor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0032] The present invention provides a single current sensor predictive control method for permanent magnet synchronous motors, such as figure 1 As shown, it specifically includes the following steps:

[0033] Step 1. Online real-time collection of phase a current, rotational speed, and rotor position angle of the permanent magnet synchronous motor;

[0034] Step 2. In the α-β coordinate system, take the a-phase current, rotational speed, and rotor position angle collected in step 1 as input quantities, and ...

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 provides a single current sensor predictive control method for a permanent magnet synchronous motor, which uses an extended observer, whose extended state quantity can change in real time following the voltage disturbance, and the algorithm of the extended state observer only needs to input the rotor electrical angular velocity, rotor Position, stator voltage, and a-phase electronic current can realize the reconstruction of the complete information of the three-phase current of the motor. The information required by the extended state observer is easy to obtain, the structure is simple, and the amount of calculation is small.

Description

technical field [0001] The invention relates to the technical field of permanent magnet synchronous motor control, in particular to single current sensor control in which the permanent magnet synchronous motor has only one phase current sensor. Background technique [0002] In the control process of the permanent magnet synchronous motor, obtaining the three-phase current of the motor, the rotor position and the rotor speed of the motor is very important to obtain the corresponding control quantity. A conventional permanent magnet synchronous motor drive system requires at least one position sensor and two current sensors, but the use of multiple sensors will not only complicate the structure of the motor and reduce the reliability of the motor drive system, but may also cause problems due to the The measurement error between them leads to the decrease of the control accuracy of the motor drive system. By appropriately reducing the number of physical sensors, the control pe...

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): H02P21/18H02P21/13H02P21/22
CPCH02P21/13H02P2205/01H02P21/18H02P21/22
Inventor 张硕赵明威张承宁李雪萍董岳林
Owner BEIJING INSTITUTE OF TECHNOLOGYGY