Transient model of mixed pole machines with eccentric reluctance rotor

A. L. Mohamadein, R. A. Hamdy, Ayman S. Abdel-Khalik

Research output: Contribution to journalArticle

3 Citations (Scopus)


This paper presents the modeling of Mixed Pole Machine (MPM) operating with eccentric rotors. The operation of a MPM machine with eccentric rotor positions creates asymmetrical air gap flux distribution that results in unbalanced magnetic pull. The winding function theory is used to calculate machine winding inductances as a function of rotor radial displacement. The effect of dynamic air-gap eccentricity on the inductances of salient rotor type has been discussed. Coupled magnetic circuits approach has been used to simulate the machine behavior under healthy and eccentric rotor conditions. Also, the paper presents the contribution of these inductances to the radial force production and how to use this machine in magnetic bearing applications.

Original languageEnglish
Pages (from-to)455-466
Number of pages12
JournalAEJ - Alexandria Engineering Journal
Issue number4
Publication statusPublished - 1 Jul 2004


  • Magnetic bearings
  • Mixed pole machine
  • Radial force
  • Winding function

ASJC Scopus subject areas

  • Engineering(all)

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