Global Sliding-Mode Suspension Control of Bearingless Switched Reluctance Motor under Eccentric Faults to Increase Reliability of Motor

Pulivarthi Nageswara Rao, Ramesh Devarapalli, Fausto Pedro García Márquez and Hasmat Malik
Additional contact information
Pulivarthi Nageswara Rao: Department of Electrical Electronics and Communication Engineering, GITAM (Deemed to be University), Visakhapatnam 530045, India
Ramesh Devarapalli: Department of Electrical Engineering, IIT (ISM), Dhanbad 826004, India
Fausto Pedro García Márquez: Ingenium Research Group, University of Castilla-La Mancha, 13071 Ciudad Real, Spain
Hasmat Malik: BEARS, University Town, NUS Campus, Singapore 138602, Singapore

Energies, 2020, vol. 13, issue 20, 1-38

Abstract: 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.

Keywords: bearingless; displacements; global sliding-mode control; robust; suspension (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

Downloads: (external link)
https://www.mdpi.com/1996-1073/13/20/5485/pdf (application/pdf)
https://www.mdpi.com/1996-1073/13/20/5485/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:13:y:2020:i:20:p:5485-:d:431753

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().