Diagnosis Technique Using a Detection Coil in BLDC Motors With Interturn Faults

Author

Kyung-Tae Kim ; Seung-Tae Lee ; Jin Hur

Author_Institution

Sch. of Electr. Eng., Univ. of Ulsan, Ulsan, South Korea

Volume

50

Issue

2

fYear

2014

fDate

Feb. 2014

Firstpage

885

Lastpage

888

Abstract

Interturn faults (ITFs) cause significant changes in the electrical and magnetic characteristics of motors. In particular, ITFs can be the cause of serious distortions in the magnetic field of an air gap. Therefore, we develop a system matrix with an ITF for FEM simulation, which considers the nonlinearity of the ITF. Using the analysis of the magnetic characteristics of the detection coil from the FEM results, a circuit that employs the proposed diagnosis algorithm is shown to detect the phase and the location of a fault.

Keywords

brushless DC motors; coils; fault location; finite element analysis; stators; BLDC motors; FEM simulation; ITF; air gap; detection coil; diagnosis technique; fault location; interturn faults; magnetic field distortions; motor electrical characteristics; motor magnetic characteristics; phase detection; Circuit faults; Coils; Equations; Finite element analysis; Magnetic circuits; Stator windings; Windings; Diagnosis algorithm for a turn fault; diagnosis for turn faults; interturn fault (ITF); search coil; stator turn fault;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2013.2282152

Filename

6749252