Title :
Finite element analysis of an anisotropic ferrite bonded magnet for BLDC motor design
Author :
Hong-Soon Chang ; Soo-Hyun Baek
Author_Institution :
Dept. of Electr. Eng., Dongguk Univ.
Abstract :
In many cases, ferrite bonded magnets used in inner-rotor type small brushless DC (BLDC) motors do not have rotor core, and the magnetization directions of permanent magnets do not have only parallel or radial direction. In this paper, the magnetization directions of a ferrite bonded magnet are analyzed by finite element analysis for magnetization procedure. The characteristics of an inner-rotor type BLDC motor are analyzed by using the analyzed magnetization model. In the analysis, the overhang effect of the magnet is calculated by using 3-D FEM. The validity of the analysis method is verified by comparing the analyzed results with measured ones
Keywords :
brushless DC motors; ferrite devices; finite element analysis; machine theory; magnetisation; permanent magnet motors; permanent magnets; small electric machines; 3D FEM; anisotropic ferrite bonded magnets; bonded magnet; finite element analysis; inner-rotor type small brushless DC motors; magnetization directions; overhang effect; Anisotropic magnetoresistance; Bonding; Brushless DC motors; DC motors; Ferrites; Finite element methods; Magnetic analysis; Magnetic anisotropy; Magnetization; Perpendicular magnetic anisotropy;
Conference_Titel :
Electrical Machines and Systems, 2001. ICEMS 2001. Proceedings of the Fifth International Conference on
Conference_Location :
Shenyang
Print_ISBN :
7-5062-5115-9
DOI :
10.1109/ICEMS.2001.971888
