Title :
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
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;
Conference_Titel :
Electrical Machines (ICEM), 2014 International Conference on
Conference_Location :
Berlin
DOI :
10.1109/ICELMACH.2014.6960437
