Post-Fault Operation of Bearingless Multisector SPM Machines by Space Vector Control

Giacomo Sala, Giorgio Valente, David Gerada, Pericle Zanchetta, Chris Gerada

Research output: Journal PublicationArticlepeer-review

18 Citations (Scopus)


In this article, a novel post fault control algorithm based on the space vector method is presented and applied to a bearingless multisector permanent magnet synchronous machine with a triple three-phase winding. First, the expressions of the current space vectors, as a function of the electromagnetic suspension force and motoring torque, are introduced. Then, the open-circuit fault is described and a new post-fault algorithm is introduced. The introduced post-fault algorithm, based on the minimization of the stator copper losses, is compared at simulation level with an existing one, where the above-mentioned loss minimization was not considered. The simulation results show a remarkable improvement in the performance when the novel post-fault algorithm is employed. Finally, the developed control algorithm is experimentally validated on a prototype of a bearingless multisector permanent magnet synchronous machine.

Original languageEnglish
Article number8792118
Pages (from-to)4168-4177
Number of pages10
JournalIEEE Transactions on Power Electronics
Issue number4
Publication statusPublished - Apr 2020


  • Bearingless machines (BM)
  • fault tolerant control
  • force control
  • machine vector control
  • magnetic levitation
  • multiphase machines
  • open-circuit faults
  • permanent magnet machines

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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