Open AccessDemagnetisation fault detection in PMSM using zero sequence current components
Author(s) -
Ding Shichuan,
Hang Jun,
Li Hao,
Wang Qunjing
Publication year - 2017
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
ISSN - 1350-911X
DOI - 10.1049/el.2016.2600
Subject(s) - sequence (biology) , current (fluid) , zero (linguistics) , fault (geology) , computer science , symmetrical components , fault detection and isolation , engineering , electrical engineering , artificial intelligence , geology , voltage , seismology , chemistry , actuator , linguistics , biochemistry , philosophy , transformer
A demagnetisation fault detection method for a delta‐connected permanent magnet synchronous machine (PMSM) based on zero sequence current components (ZSCC) is proposed. The model of the delta‐connected PMSM with the demagnetisation fault is first established. Then the expression of the ZSCC is presented for the delta‐connected PMSM, and an equivalent fault severity index which can quantify the demagnetisation degree is obtained, being not limited by the partial or uniform demagnetisation. Finally, the simulation results show that the potential of the proposed fault severity index for the demagnetisation fault detection.