Comparative study of inner and outer rotor bearingless synchronous reluctance motors

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In this study, the authors presented a systematic design procedure of outer rotor bearingless synchronous reluctance motor (SynRM). The proposed motor is compared with an already prototyped inner rotor bearingless SynRM at different
operation points. It has been shown that a properly designed outer rotor SynRM can produce higher levitation forces than the inner rotor counterpart. The inner rotor motor produces higher torque and eccentric forces than the outer rotor motor.
Original languageEnglish
Pages (from-to)4375-4379
Number of pages5
Journal The Journal of Engineering
Issue number17
Publication statusPublished - 22 Jan 2019
MoE publication typeA1 Journal article-refereed
EventIET International Conference on Power Electronics, Machines and Drives - Liverpool, United Kingdom
Duration: 17 Apr 201819 Apr 2018
Conference number: 9


  • Design
  • Torque-ripple
  • Inner rotor motor
  • Magnetic levitation
  • Operation points
  • Outer rotor SynRM
  • Outer rotor bearingless synchronous reluctance motor
  • Reluctance motors
  • Rotors
  • Systematic design procedure
  • Torque

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  • Projects

    Sensorless and bearingless reluctance motor drive

    Hinkkanen, M., Mukherjee, V., Saarakkala, S. & Sokolov, M.


    Project: Academy of Finland: Other research funding

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