Open AccessRotor fault diagnosis in permanent magnet synchronous machine using the midpoint voltage of windings
Author(s) -
Bossio José,
Ruschetti Cristian,
Bossio Guillermo,
Verucchi Carlos,
De Angelo Cristian
Publication year - 2020
Publication title -
iet electric power applications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.815
H-Index - 97
eISSN - 1751-8679
pISSN - 1751-8660
DOI - 10.1049/iet-epa.2019.0428
Subject(s) - electromagnetic coil , midpoint , magnet , rotor (electric) , voltage , control theory (sociology) , fault (geology) , computer science , electrical engineering , engineering , physics , mathematics , geology , geometry , artificial intelligence , control (management) , seismology
A new strategy is proposed here for the diagnosis of asymmetric demagnetisation in permanent magnet synchronous machines. The strategy is based on the measuring of the voltage at the midpoint of the windings within a phase. Unlike the phase voltage, for a fault situation, the midpoint voltage shows sidebands around the fundamental component, which allows detecting and quantifying the demagnetisation phenomenon. A low‐cost implementation for the automatic detection of faults is also proposed in the present study and experimental results are presented to validate the strategy.