Bearingless asynchronous motor inverse decoupling control system based on online rotor resistance identification

A rotor resistance, asynchronous motor technology, applied in the direction of motor generator control, electronic commutation motor control, control system, etc., can solve the influence of rotor resistance parameter decoupling control performance, rotor flux linkage observation error, affecting air gap flux linkage Accuracy system dynamic decoupling control performance and other issues

Active Publication Date: 2019-08-16
HENAN UNIV OF SCI & TECH
View PDF10 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the operation of the bearingless asynchronous motor, the motor parameters will change with the change of the operating environment, especially the rotor resistance is greatly affected by the temperature change, which will lead to the observation error of the rotor flux linkage, thus indirectly affecting the accuracy of the air gap flux linkage. performance, dynamic decoupling control performance of the system
[0003] The search results of existing literature and patents found that: there is a complex electromagnetic coupling relationship inside the bearingless asynchronous motor, and to achieve its high-performance control, it is necessary to realize the decoupling control between its related variables; about the inverse system dynamics of the bearingless asynchronous motor Decoupling control has been studied at home and abroad, but the rotor resistance parameters have an important impact on the dynamic decoupling control performance of the inverse system
At present, there are few research reports on the identification of rotor resistance of bearingless asynchronous motors; for bearingless asynchronous motors, there are existing literatures based on the principle of the influence of rotor resistance changes on the air gap flux linkage of the torque system, using magnetic levitation force commands to perform bearingless asynchronous Research on the identification of motor rotor resistance, but it can only be applied to the special case of known external radial force load

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
  • Bearingless asynchronous motor inverse decoupling control system based on online rotor resistance identification
  • Bearingless asynchronous motor inverse decoupling control system based on online rotor resistance identification
  • Bearingless asynchronous motor inverse decoupling control system based on online rotor resistance identification

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0063] The inverse decoupling control system of a bearingless asynchronous motor based on the online identification of rotor resistance firstly derives a reference model and an adjustable model of the reactive power of the torque system in the stationary coordinate system, and its "reference model" does not include parameters of the stator resistance , pure integral link; then, construct the rotor resistance "fuzzy PI adaptive law" based on Popov's ultra-stable theory, in order to effectively improve the real-time speed and accuracy of rotor resistance identification; finally, the inverse system model of the bearingless asynchronous motor, In the rotor flux observation model, the rotor resistance parameters are corrected in real time in order to effectively improve its dynamic decoupling control performance. It belongs to the field of parameter online detection and drive control technology of new special motors, and is especially suitable for high-performance dynamic decoupling ...

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 bearingless asynchronous motor inverse decoupling control system based on online rotor resistance identification. The bearingless asynchronous motor inverse decoupling controlsystem comprises a bearingless asynchronous motor original system, a bearingless asynchronous motor inverse system, a rotor resistance identifier, a rotor flux observer and four closed loop regulators. A reference model and an observation model of torque system reactive power are deduced in a static coordinate system, and the reference model does not include stator resistance parameters and pureintegration element. A rotor resistance fuzzy PI adaptive law based on the Popov hyperstability theory is constructed so as to effectively improve the real-time rapidity and accuracy of rotor resistance identification, and the rotor resistance parameters in the inverse system model and the rotor flux observation model of the bearingless asynchronous motor are corrected in real time and thus the dynamic decoupling control performance can be effectively improve. The system belongs to the technical field of online parameter detection and drive control of the novel special motor and is especiallysuitable for the occasion of high-performance dynamic decoupling control application of the bearingless asynchronous motor.

Description

technical field [0001] The invention relates to the technical field of online detection and control of parameters of special AC motors, in particular to a bearingless asynchronous motor inverse decoupling control system based on online identification of rotor resistance. Background technique [0002] Bearingless motor is a new type of motor suitable for high-speed operation developed in recent years based on the similarity between magnetic bearing and stator structure of AC motor. It has broad application prospects in aerospace, material sealing transmission, advanced manufacturing and other fields. During the operation of the bearingless asynchronous motor, the motor parameters will change with the change of the operating environment, especially the rotor resistance is greatly affected by the temperature change, which will lead to the observation error of the rotor flux linkage, thus indirectly affecting the accuracy of the air gap flux linkage. performance, dynamic decoupl...

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): H02P21/14H02P21/13H02P21/06
CPCH02P21/001H02P21/0017H02P21/06H02P21/13H02P21/14H02P2207/01
Inventor 卜文绍孙立功陈有鹏屠晓婉卢盼超
Owner HENAN UNIV OF SCI & TECH
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