Title :
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
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;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2013.2282152
