Global Sliding-Mode Suspension Control of Bearingless Switched Reluctance Motor under Eccentric Faults to Increase Reliability of Motor
Bearingless motor development is a substitute for magnetic bearing motors owing to several benefits, such as nominal repairs, compactness, lower cost, and no need for high-power amplifiers. Compared to conventional motors, rotor levitation and its steady control is an additional duty in bearingless...
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MDPI AG
2020-10-01
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Series: | Energies |
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Online Access: | https://www.mdpi.com/1996-1073/13/20/5485 |
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author | Pulivarthi Nageswara Rao Ramesh Devarapalli Fausto Pedro García Márquez Hasmat Malik |
author_facet | Pulivarthi Nageswara Rao Ramesh Devarapalli Fausto Pedro García Márquez Hasmat Malik |
author_sort | Pulivarthi Nageswara Rao |
collection | DOAJ |
description | Bearingless motor development is a substitute for magnetic bearing motors owing to several benefits, such as nominal repairs, compactness, lower cost, and no need for high-power amplifiers. Compared to conventional motors, rotor levitation and its steady control is an additional duty in bearingless switched reluctance motors when starting. For high-speed applications, the use of simple proportional integral derivative and fuzzy control schemes are not in effect in suspension control of the rotor owing to inherent parameter variations and external suspension loads. In this paper, a new robust global sliding-mode controller is suggested to control rotor displacements and their positions to ensure fewer eccentric rotor displacements when a bearingless switched reluctance motor is subjected to different parameter variations and loads. Extra exponential fast-decaying nonlinear functions and rotor-tracking error functions have been used in the modeling of the global sliding-mode switching surface. Simulation studies have been conducted under different testing conditions. From the results, it is shown that rotor displacements and suspension forces in X and Y directions are robust and stable. Owing to the proposed control action of the suspension phase currents, the rotor always comes back rapidly to the center position under any uncertainty. |
first_indexed | 2024-03-10T15:28:35Z |
format | Article |
id | doaj.art-6c479ac205fb45c6bd5b56be97783cc6 |
institution | Directory Open Access Journal |
issn | 1996-1073 |
language | English |
last_indexed | 2024-03-10T15:28:35Z |
publishDate | 2020-10-01 |
publisher | MDPI AG |
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series | Energies |
spelling | doaj.art-6c479ac205fb45c6bd5b56be97783cc62023-11-20T17:48:12ZengMDPI AGEnergies1996-10732020-10-011320548510.3390/en13205485Global Sliding-Mode Suspension Control of Bearingless Switched Reluctance Motor under Eccentric Faults to Increase Reliability of MotorPulivarthi Nageswara Rao0Ramesh Devarapalli1Fausto Pedro García Márquez2Hasmat Malik3Department of Electrical Electronics and Communication Engineering, GITAM (Deemed to be University), Visakhapatnam 530045, IndiaDepartment of Electrical Engineering, IIT (ISM), Dhanbad 826004, IndiaIngenium Research Group, University of Castilla-La Mancha, 13071 Ciudad Real, SpainBEARS, University Town, NUS Campus, Singapore 138602, SingaporeBearingless motor development is a substitute for magnetic bearing motors owing to several benefits, such as nominal repairs, compactness, lower cost, and no need for high-power amplifiers. Compared to conventional motors, rotor levitation and its steady control is an additional duty in bearingless switched reluctance motors when starting. For high-speed applications, the use of simple proportional integral derivative and fuzzy control schemes are not in effect in suspension control of the rotor owing to inherent parameter variations and external suspension loads. In this paper, a new robust global sliding-mode controller is suggested to control rotor displacements and their positions to ensure fewer eccentric rotor displacements when a bearingless switched reluctance motor is subjected to different parameter variations and loads. Extra exponential fast-decaying nonlinear functions and rotor-tracking error functions have been used in the modeling of the global sliding-mode switching surface. Simulation studies have been conducted under different testing conditions. From the results, it is shown that rotor displacements and suspension forces in X and Y directions are robust and stable. Owing to the proposed control action of the suspension phase currents, the rotor always comes back rapidly to the center position under any uncertainty.https://www.mdpi.com/1996-1073/13/20/5485bearinglessdisplacementsglobal sliding-mode controlrobustsuspension |
spellingShingle | Pulivarthi Nageswara Rao Ramesh Devarapalli Fausto Pedro García Márquez Hasmat Malik Global Sliding-Mode Suspension Control of Bearingless Switched Reluctance Motor under Eccentric Faults to Increase Reliability of Motor Energies bearingless displacements global sliding-mode control robust suspension |
title | Global Sliding-Mode Suspension Control of Bearingless Switched Reluctance Motor under Eccentric Faults to Increase Reliability of Motor |
title_full | Global Sliding-Mode Suspension Control of Bearingless Switched Reluctance Motor under Eccentric Faults to Increase Reliability of Motor |
title_fullStr | Global Sliding-Mode Suspension Control of Bearingless Switched Reluctance Motor under Eccentric Faults to Increase Reliability of Motor |
title_full_unstemmed | Global Sliding-Mode Suspension Control of Bearingless Switched Reluctance Motor under Eccentric Faults to Increase Reliability of Motor |
title_short | Global Sliding-Mode Suspension Control of Bearingless Switched Reluctance Motor under Eccentric Faults to Increase Reliability of Motor |
title_sort | global sliding mode suspension control of bearingless switched reluctance motor under eccentric faults to increase reliability of motor |
topic | bearingless displacements global sliding-mode control robust suspension |
url | https://www.mdpi.com/1996-1073/13/20/5485 |
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