AUTHOR : Sang-Ho Lee, Ji-Young Lee, Jung-Pyo Hong, Jin-Hur, Ha-Gyeong Sung
ORGANIZATION :
JOURNAL : ICEMS(International Conference on Electrical Machines and Syst)
YEAR : 2004
VOL : CD
ISSUE :
PAGE : ~
In recent years there have been significant developments in soft magnetic composite(SMC) core materials. Powder metallurgy offers advantages including high material utilization, precise material control, and the ability to produce relatively complex shapes to excellent accuracy. However, the use of these materials in the construction of magnetic circuits in alternating current applications is limited by the relatively high eddy current losses occurring in the solid material. The core loss estimation can be the most importance in designing electrical motors made of SMC material.This paper deals with the core loss calculation of a BLDC motor nadel of SMC material. Since the teeth of motor partially have overhang in axial direction, 3-dimensional equivalent magnetic circuit network(3D EMCN) is used as an analytical method of get flux density of each element. The total core loss is calcualted with the magnetic flux density and core loss curves of the SMC material. The calculated result is compared with core loss of the motor without overhang in stator teeth. This study can be useful to effectively estimate iron loss including both hysteresis and eddy current loss in electrical machines made of SMC materials at steady state.