Modelling and Model-Based Control of A Bearingless 100 kW Electric Motor for High-Speed Applications

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review


  • Subhadyuti Sahoo
  • Rafał P. Jastrzebski
  • Daria Kepsu
  • Kai Zenger
  • Pekko Jaatinen
  • Olli Pyrhonen

Research units

  • Lappeenranta University of Technology


This paper presents model-based control (MBC) analyses of a bearingless interior permanent magnet motor (IPMM). The motor is capable of producing 100 kW power for use in high-speed applications in industries. The maximum speed of the motor is 22000 rpm. Motor’s initial parameters are obtained through Finite Element Method (FEM) analyses. State-space models, controller and observer matrices are built based on the optimal, operating points obtained from FEM analyses. Thereafter, the rotor’s magnetic levitation characteristics are analyzed through digital control strategies. Performances of the controlled system are recorded and subsequently discussed.


Original languageEnglish
Title of host publicationProceedings of the 2018 20th European Conference on Power Electronics and Applications (EPE'18 ECCE Europe)
Publication statusPublished - Sep 2018
MoE publication typeA4 Article in a conference publication
EventEuropean Conference on Power Electronics and Applications - Riga, Latvia
Duration: 17 Sep 201821 Sep 2018
Conference number: 20

Publication series

NameEuropean Conference on Power Electronics and Applications
ISSN (Print)2325-0313


ConferenceEuropean Conference on Power Electronics and Applications
Abbreviated titleEPE-ECCE Europe

    Research areas

  • permanent magnet motor, magnetic bearings, modelling, optimal control, digital control, industrial application

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