Title :
Back EMF characteristics analysis of brushless DC motor having polarly magnetized ring magnet according to the magnet dimension
Author :
Jung, In-Soung ; Rhyu, Se-Hyun ; Lim, Seung-Bin
Author_Institution :
Intell. Mechatron. Res. Center, Korea Electron. Technol. Inst., Seongnam, South Korea
Abstract :
This paper compares the characteristics of a ferrite bonded ring magnets having polar magnetization with those of radially magnetized magnet. The magnetization yoke is investigated to determine the magnetization status of the ring magnet. The surface flux densities of the polarly magnetized ring magnets and those of the radially magnetized ring magnets are analyzed. And the electromotive force (EMF) values of brushless DC motors with the magnets are investigated according to the pole number and thickness of the magnets.
Keywords :
brushless DC motors; electric potential; ferrites; magnetisation; magnets; back EMF characteristics analysis; brushless DC motor; electromotive force; ferrite bonded ring magnet; magnetization yoke; polar magnetization; polarly magnetized ring magnet; radially magnetized magnet; Magnetic cores; Magnetic flux; Magnetization; Perpendicular magnetic anisotropy; Saturation magnetization;
Conference_Titel :
Electrical Machines and Systems (ICEMS), 2010 International Conference on
Conference_Location :
Incheon
Print_ISBN :
978-1-4244-7720-3
