Research on the Speed Sliding Mode Observation Method of a Bearingless Induction Motor
In order to achieve the speed sensorless control of a bearingless induction motor (BL-IM), a novel sliding mode observation (SMO) method of motor speed is researched. First of all, according to the mathematical model of a BL-IM system, the observation model of stator current and that of rotor flux-l...
Main Authors: | , , |
---|---|
Format: | Article |
Language: | English |
Published: |
MDPI AG
2021-02-01
|
Series: | Energies |
Subjects: | |
Online Access: | https://www.mdpi.com/1996-1073/14/4/864 |
id |
doaj-99a0a876fe314228b9cd5886059cd21d |
---|---|
record_format |
Article |
spelling |
doaj-99a0a876fe314228b9cd5886059cd21d2021-02-08T00:03:07ZengMDPI AGEnergies1996-10732021-02-011486486410.3390/en14040864Research on the Speed Sliding Mode Observation Method of a Bearingless Induction MotorYoupeng Chen0Wenshao Bu1Yanke Qiao2Information Engineering College, Henan University of Science and Technology, Luoyang 471023, ChinaElectrical Engineering College, Henan University of Science and Technology, Luoyang 471023, ChinaLuoyang Mining Machinery Engineering Design Institute, Luoyang 471039, ChinaIn order to achieve the speed sensorless control of a bearingless induction motor (BL-IM), a novel sliding mode observation (SMO) method of motor speed is researched. First of all, according to the mathematical model of a BL-IM system, the observation model of stator current and that of rotor flux-linkage are derived. In order to overcome the chattering problem of a sliding mode observer, a continuous saturation function is adopted to replace the traditional sign function. Then, the SMO model of motor speed is derived, and the stability of the proposed motor speed SMO method is validated by the Lyapunov stability theory. At the end, the observed motor speed and rotor flux-linkage are applied to a BL-IM inverse “dynamic decoupling control” (DDC) system. Simulation results show that the real-time observation or dynamic tracking of motor speed and rotor flux-linkage are achieved in a more timely manner and more accurately, and higher steady-state observation accuracy is obtained; the proposed SMO method can be used in the BL-IM’s inverse DDC system to realize reliable magnetic suspension operation control without a speed sensor.https://www.mdpi.com/1996-1073/14/4/864Bearingless Induction MotorSliding Mode ObservationDynamic Decoupling based on Inverse SystemMotor Speed Observercurrent and flux-linkage |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Youpeng Chen Wenshao Bu Yanke Qiao |
spellingShingle |
Youpeng Chen Wenshao Bu Yanke Qiao Research on the Speed Sliding Mode Observation Method of a Bearingless Induction Motor Energies Bearingless Induction Motor Sliding Mode Observation Dynamic Decoupling based on Inverse System Motor Speed Observer current and flux-linkage |
author_facet |
Youpeng Chen Wenshao Bu Yanke Qiao |
author_sort |
Youpeng Chen |
title |
Research on the Speed Sliding Mode Observation Method of a Bearingless Induction Motor |
title_short |
Research on the Speed Sliding Mode Observation Method of a Bearingless Induction Motor |
title_full |
Research on the Speed Sliding Mode Observation Method of a Bearingless Induction Motor |
title_fullStr |
Research on the Speed Sliding Mode Observation Method of a Bearingless Induction Motor |
title_full_unstemmed |
Research on the Speed Sliding Mode Observation Method of a Bearingless Induction Motor |
title_sort |
research on the speed sliding mode observation method of a bearingless induction motor |
publisher |
MDPI AG |
series |
Energies |
issn |
1996-1073 |
publishDate |
2021-02-01 |
description |
In order to achieve the speed sensorless control of a bearingless induction motor (BL-IM), a novel sliding mode observation (SMO) method of motor speed is researched. First of all, according to the mathematical model of a BL-IM system, the observation model of stator current and that of rotor flux-linkage are derived. In order to overcome the chattering problem of a sliding mode observer, a continuous saturation function is adopted to replace the traditional sign function. Then, the SMO model of motor speed is derived, and the stability of the proposed motor speed SMO method is validated by the Lyapunov stability theory. At the end, the observed motor speed and rotor flux-linkage are applied to a BL-IM inverse “dynamic decoupling control” (DDC) system. Simulation results show that the real-time observation or dynamic tracking of motor speed and rotor flux-linkage are achieved in a more timely manner and more accurately, and higher steady-state observation accuracy is obtained; the proposed SMO method can be used in the BL-IM’s inverse DDC system to realize reliable magnetic suspension operation control without a speed sensor. |
topic |
Bearingless Induction Motor Sliding Mode Observation Dynamic Decoupling based on Inverse System Motor Speed Observer current and flux-linkage |
url |
https://www.mdpi.com/1996-1073/14/4/864 |
work_keys_str_mv |
AT youpengchen researchonthespeedslidingmodeobservationmethodofabearinglessinductionmotor AT wenshaobu researchonthespeedslidingmodeobservationmethodofabearinglessinductionmotor AT yankeqiao researchonthespeedslidingmodeobservationmethodofabearinglessinductionmotor |
_version_ |
1724280425419898880 |