Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method, device and motor for determining rotor angular position of permanent magnet synchronous motor

A permanent magnet synchronous motor, rotor angle technology, applied in the direction of electronic commutator, etc., can solve the problem that the low-speed control occasion cannot meet the application requirements, etc.

Active Publication Date: 2021-06-29
GUANGDONG WELLING ELECTRIC MACHINE MFG +1
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen that the position resolution of the permanent magnet synchronous motor Hall position acquisition scheme in the related art is 60° electrical angle, which cannot meet the application requirements for high-demand low-speed control occasions

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, device and motor for determining rotor angular position of permanent magnet synchronous motor
  • Method, device and motor for determining rotor angular position of permanent magnet synchronous motor
  • Method, device and motor for determining rotor angular position of permanent magnet synchronous motor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0037] In order to understand the above-mentioned purpose, features and advantages of the present invention more clearly, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0038] In the following description, many specific details are set forth in order to fully understand the present invention, but the present invention can also be implemented in other ways different from those described here, therefore, the protection scope of the present invention is not limited to the specific details disclosed below. EXAMPLE LIMITATIONS.

[0039] The embodiment of the first aspect of the present invention proposes a method for determining the angular position of the rotor of a permanent magnet synchronous motor. The permanent magnet synchrono...

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 method and device for determining the angular position of a permanent magnet synchronous motor rotor and the permanent magnet synchronous motor. The permanent magnet synchronous motor is provided with a plurality of Hall position sensors, and is provided with a Hall magnetic ring whose number of poles is twice that of the permanent magnet synchronous motor, and the Hall position sensor is used to output a Hall position signal. The method Including: when the permanent magnet synchronous motor is powered on and in a stopped state, obtain the Hall position signal level, determine the initial Hall angle position and the initial sector value according to the Hall position signal level; at the initial Hall angle position q Add current to the axis direction to make the permanent magnet synchronous motor rotate, and record the sector change; determine the rotation direction of the permanent magnet synchronous motor and the Hall position flag according to the sector change value; according to the Hall position flag and the initial Hall angle position, to determine the angular position of the rotor of the permanent magnet synchronous motor.

Description

technical field [0001] The invention relates to the technical field of permanent magnet synchronous motors, in particular to a method and device for determining the angular position of a permanent magnet synchronous motor rotor and a permanent magnet synchronous motor. Background technique [0002] The closed-loop control of the permanent magnet synchronous motor is based on the fact that a variety of control variables can be measured, such as the feedback variables required by the speed loop and torque loop, including speed, rotation angle and current. Among them, in order to adjust the speed and position of the rotor, it is generally necessary to install a position sensor with high precision (such as a photoelectric encoder and a resolver) on the shaft end of the motor rotor for closed-loop control of the speed and position. The use of the position sensor ensures the control of the motor. However, it also has the disadvantages of increased system cost and reduced system re...

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): H02P6/16
CPCH02P6/16
Inventor 徐磊李荷洁秦向南赵小安
Owner GUANGDONG WELLING ELECTRIC MACHINE MFG
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com