Open AccessDiagnosis and detection of dynamic eccentricity fault for permanent magnet transverse flux generator
Author(s) -
Pourmoosa Ali. A.,
Ghods Mehrage,
Faiz Jawad,
VaezZadeh Sadegh
Publication year - 2021
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/elp2.12033
Subject(s) - permeance , eccentricity (behavior) , stator , counter electromotive force , magnet , permanent magnet synchronous generator , control theory (sociology) , rotor (electric) , amplitude , finite element method , transverse plane , engineering , fault (geology) , flux (metallurgy) , generator (circuit theory) , structural engineering , mechanics , physics , computer science , mechanical engineering , materials science , current (fluid) , electrical engineering , power (physics) , geology , optics , law , artificial intelligence , membrane , genetics , biology , control (management) , political science , metallurgy , permeation , seismology , quantum mechanics
The authors analyse no‐load and full‐load performance of a permanent magnet transverse flux generators (PMTFGs) in fully aligned condition as well as under different types of mechanical faults including static eccentricity (SE), dynamic eccentricity (DE), inclined rotor (IR) and run‐out (RO) faults. An analytical model is developed to calculate the air‐gap permeance. This permeance is used to estimate the flux density and back‐electromotive force in the healthy and faulty machine. Performance of the machine is predicted using the proposed analytical model and verified by comparing it with the results obtained using three‐dimensional time stepping finite element method. Finally, the spectra of stator current in the PMTFG under SE, DE, IR and OR faults are determined through which the amplitude of side‐band components with a specific frequency pattern is extracted. It can detect the eccentricity fault precisely, recognise its type and determines its severity.