Effects of partial rotor demagnetization on permanent magnet synchronous machines

Author

Ruschetti, Cristian ; Bossio, Guillermo ; De Angelo, Cristian ; Verucchi, Carlos

Author_Institution

Grupo de Electron. Aplic. (GEA), UNRC, Cordoba, Argentina

fYear

2010

fDate

14-17 March 2010

Firstpage

1233

Lastpage

1238

Abstract

The effects of magnet faults on the rotor of permanent magnet synchronous machines are analyzed in the present work. In particular, demagnetization effects are analyzed using the finite element method. Two different stator winding configurations are considered in the analysis, series and parallel connected windings. From this analysis, a fault detection strategy based on the information contained in winding-current spectrum is proposed. A fault severity factor is also proposed to quantify residual magnetism losses (demagnetization) on a single magnet. This factor is practically independent from the motor load conditions. Experimental results are presented to validate the proposal.

Keywords

demagnetisation; fault diagnosis; finite element analysis; permanent magnet machines; rotors; synchronous machines; fault detection strategy; fault severity factor; finite element method; magnet faults; partial rotor demagnetization; permanent magnet synchronous machines; residual magnetism losses; stator winding; winding current spectrum; Demagnetization; Fault detection; Finite element methods; Information analysis; Magnetic analysis; Magnetic losses; Permanent magnet machines; Proposals; Stator windings; Synchronous motors;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Technology (ICIT), 2010 IEEE International Conference on

Conference_Location

Vi a del Mar

Print_ISBN

978-1-4244-5695-6

Electronic_ISBN

978-1-4244-5696-3

Type

conf

DOI

10.1109/ICIT.2010.5472614

Filename

5472614