Demagnetization faults analysis in a BLDC motor for diagnostic purposes

Author

Athanasopoulos, D.K. ; Karagkounis, P.D. ; Kappatou, Joya C. ; Tsotoulidis, Savvas

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. of Patras, Patras, Greece

fYear

2014

fDate

2-5 Sept. 2014

Firstpage

1862

Lastpage

1868

Abstract

This paper investigates a surface inset-permanent magnet brushless DC motor with fractional-slot winding configuration driven by a three-phase inverter under different types of defected magnets. The comparative study on demagnetization faults is carried out using FEM analysis. The number of damaged magnets, their relative position in the rotor surface and their demagnetization level are studied for diagnostic purposes. The harmonic components of the stator current and torque spectrums are considered as diagnostic means of the demagnetization faults. The influence of different types of demagnetization faults on the electromagnetic behavior of the BLDC motor is also investigated exploiting FEM analysis.

Keywords

brushless DC motors; fault diagnosis; finite element analysis; permanent magnet motors; rotors; stators; FEM analysis; brushless DC motor; demagnetization faults analysis; electromagnetic behavior; fault diagnostic; fractional-slot winding configuration; harmonic components; rotor surface; stator current; surface inset-permanent magnet BLDC motor; three-phase inverter; torque spectrums; Demagnetization; Harmonic analysis; Magnetic domains; Magnetic flux; Permanent magnet motors; Rotors; Stators; BLDC motor; Demagnetization Fault; FEM analysis; Fault diagnosis;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Machines (ICEM), 2014 International Conference on

Conference_Location

Berlin

Type

conf

DOI

10.1109/ICELMACH.2014.6960437

Filename

6960437