Title :
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
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;
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
DOI :
10.1109/ICIT.2010.5472614
