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

Off-line recognition method for alternating current asynchronous motor mutual inductance parameters

An AC asynchronous motor and parameter technology, which is applied in the estimation/correction of motor parameters, etc., can solve the problems of complex offline parameter identification methods and difficult implementation, and achieve the effect of convenient engineering implementation and simple identification methods.

Active Publication Date: 2014-06-25
NEW UNITED GROUP
View PDF5 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is: in order to solve the problem that the traditional offline parameter identification method for AC asynchronous motors is complex and difficult to implement, the present invention provides an offline identification method for mutual inductance parameters of AC asynchronous motors to solve the above problems

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
  • Off-line recognition method for alternating current asynchronous motor mutual inductance parameters
  • Off-line recognition method for alternating current asynchronous motor mutual inductance parameters
  • Off-line recognition method for alternating current asynchronous motor mutual inductance parameters

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0055] The present invention is described in further detail now in conjunction with accompanying drawing. These drawings are all simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, so they only show the configurations related to the present invention.

[0056] The invention provides an off-line identification method of the mutual inductance parameters of an AC asynchronous motor, such as figure 1 As shown, based on the AC asynchronous motor, the inverter connected to the input end of the AC asynchronous motor, the controller that controls the output current of the inverter through the PWM signal, and the sensor used to detect the current of the AC asynchronous motor, the inverter is connected with DC steady-state power supply. The sensor transmits the detected current to the controller for adjusting the PWM signal. After the AC asynchronous motor, a torque meter and a dynamometer are connected in turn. The AC...

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 an off-line recognition method for alternating current asynchronous motor mutual inductance parameters. An inverter based on an alternating current asynchronous motor and connected with the input end of the alternating current asynchronous motor, a controller controlling the inverter to output currents through PWN signals and a sensor used for detecting currents of the alternating current asynchronous motor are included. The sensor transmits detected currents to the controller for adjusting the PWM signals. The alternating current asynchronous motor comprises a stator and a rotor. According to the off-line recognition method for alternating current asynchronous motor mutual inductance parameters, no extra devices or circuits are needed, only the resistance value of the fixed rotor of the alternating current asynchronous motor needs knowing, the measurement of the resistance value of the fixed rotor of the alternating current asynchronous motor is simple, the precision of parameters can meet FOC control requirements, and the purpose that the alternating current asynchronous motor recognizes mutual inductance parameters on the static condition is achieved. The recognition method is simple and brings convenience to project implementation.

Description

technical field [0001] The invention relates to an AC asynchronous motor, in particular to an off-line identification method for mutual inductance parameters of an AC asynchronous motor. Background technique [0002] At present, with the rapid development of motor control technology, AC asynchronous motor drive systems are used more and more widely. For a long time before, the control algorithm used in the AC asynchronous motor drive system was mainly VF frequency conversion control, but with the introduction of the field-oriented control algorithm (FOC), many products began to use a large number of FOC control algorithms in order to improve their performance. used in the control program. The AC asynchronous motor FOC control algorithm needs some internal parameters of the motor. The estimation of the mutual inductance parameters includes two parts: offline parameter identification and online parameter correction. Off-line parameter identification refers to applying a serie...

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 Applications(China)
IPC IPC(8): H02P23/14
Inventor 龚旦高明强陆斌董苗苗
Owner NEW UNITED GROUP
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