Title :
Fault detection by means of Hilbert Huang Transform of the stator current in a PMSM with demagnetization
Author :
Rosero, J. ; Garcia, A. ; Cusido, J. ; Romeral, L. ; Ortega, J.A.
Author_Institution :
Univ. Politecnica de Catalunya, Terrassa
Abstract :
This paper presents a study of the permanent magnet synchronous motor (PMSM) running under demagnetization. The simulation has been carried out by means of two dimensional (2-D) finite element analysis (FEA), and simulations results were compared with experimental results. The demagnetization fault is analyzed by means of decomposition of stator currents obtained at different speeds. The Hilbert Huang transform (HHT) is used as processing tool. This transformation represents time-dependent series in a two-dimensional (2-D) time-frequency domain by extracting instantaneous frequency components within the signal through an Empirical Mode Decomposition (EMD) process.
Keywords :
Hilbert transforms; demagnetisation; fault diagnosis; finite element analysis; permanent magnet motors; synchronous motors; time-frequency analysis; Hilbert Huang transform; PMSM; demagnetization; empirical mode decomposition process; fault detection; finite element analysis; permanent magnet synchronous motor; stator current; time-frequency domain analysis; Analytical models; Demagnetization; Fault detection; Finite element methods; Magnetic analysis; Permanent magnet motors; Signal processing; Stators; Time frequency analysis; Two dimensional displays; Drive; FEA; Hilbert Huang transform; PMSM; current; demagnetization; empirical mode decomposition; fault; simulation;
Conference_Titel :
Intelligent Signal Processing, 2007. WISP 2007. IEEE International Symposium on
Conference_Location :
Alcala de Henares
Print_ISBN :
978-1-4244-0830-6
Electronic_ISBN :
978-1-4244-0830-6
DOI :
10.1109/WISP.2007.4447631
