Skip to main content

Research Repository

Advanced Search

Open-circuit fault tolerant study of bearingless multi-sector permanent magnet machines

Valente, G.; Papini, L.; Formentini, A.; Gerada, C.; Zanchetta, P.


G. Valente

L. Papini

A. Formentini


This paper presents a fault tolerant study of a multiphase sectored permanent magnet synchronous machine involving a tripel three-phase winding. The machine electromagnetic model is written in a general way so that it can be extended and applied to all machines with a similar winding structure. An expression of the d - q axis reference currents of each three-phase winding as a function of the x - y force components and torque is provided taking into account the Joule losses minimization. Then, the case of open-circuit of one winding sector is considered, the model of the faulty machine derived and an expression of the new reference currents needed to generate radial suspension force and motoring torque is written.
Finally, the theoretical analysis are validated through finite elements simulations and the levitation performance of the machine considered are evaluated in the Matlab-Simulink environment in the case of one sector fault per time.


Valente, G., Papini, L., Formentini, A., Gerada, C., & Zanchetta, P. (2018). Open-circuit fault tolerant study of bearingless multi-sector permanent magnet machines. doi:10.23919/IPEC.2018.8507470

Conference Name 2018 International Power Electronics Conference (IPEC-Niigata 2018-ECCE Asia)
Start Date May 20, 2018
End Date May 24, 2018
Acceptance Date Jan 10, 2018
Online Publication Date Oct 25, 2018
Publication Date Oct 25, 2018
Deposit Date Jan 4, 2019
Publicly Available Date Jan 14, 2019
ISBN 9784886864055
Public URL
Additional Information © 2018 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.


You might also like

Downloadable Citations