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

Rotary transformer initial position signal autocorrection method

A resolver and initial position technology, which is applied in the field of resolver, can solve the problems of increasing process and cost, and achieve the effects of improving measurement accuracy, saving manual correction costs, and eliminating measurement errors

Active Publication Date: 2010-12-22
重庆长安新能源汽车科技有限公司
View PDF3 Cites 31 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the calibration methods of most motor factories use mechanical positioning pins or positioning notches, or use special equipment to calibrate the initial position of the resolver. These positioning methods increase the process and cost.

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
  • Rotary transformer initial position signal autocorrection method
  • Rotary transformer initial position signal autocorrection method
  • Rotary transformer initial position signal autocorrection method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] The technical solution of the present invention will be described in further detail below in conjunction with the accompanying drawings.

[0017] First, the stator magnetic vector with a fixed direction is generated according to the field-oriented control method; through the stator three-phase voltage setting, the motor stator A is connected to 10A, B is connected to -5A, and C is connected to -5A to generate an orientation that coincides with the stator A magnetic field;

[0018] Specific as figure 2 shown.

[0019] The stator generates a magnetic vector that coincides with the axis of the A-phase coil through magnetic field orientation, drags the rotor to a balanced position, and assumes that the electrical angle of the rotor position at this time is 0 degrees, and this value is the initial value of the test;

[0020] The resolver decoding chip AD1205 on the motor controller converts the resolver rotor absolute position value θ A Analyze it, and then transmit the ...

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 rotary transformer initial position signal autocorrection method, which realizes stator vector orientation through software, calculates the average value after multiple positions and multiple angles are tested. The method of the invention not only reduces the cost, but also improves the rotary transformer initial position signal autocorrection accuracy.

Description

technical field [0001] The invention belongs to the technical field of rotary transformers, in particular to detecting the initial position of a rotor of a permanent magnet synchronous motor, and in particular to a method for automatically correcting initial position signals of a rotary transformer. Background technique [0002] At present, permanent magnet synchronous motors are very suitable for electric vehicles and hybrid vehicle systems. The control requirements for permanent magnet synchronous motors are very precise. In permanent magnet synchronous control systems, not only the motors are required to work in various complex environments, but also for The control accuracy of the motor's angle, speed, and torque is very high, so it is required to detect and control the rotor position signal of the motor. [0003] In order to accurately detect the rotor position signal, the initial position correction must be performed when the resolver is installed. At present, the cal...

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
IPC IPC(8): H02P21/00H02P6/16
Inventor 王璐肖伟薛山张正兴
Owner 重庆长安新能源汽车科技有限公司
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