| Title |
2D Analysis Approach Method of a Small BLDC Motor Having Permanent Magnet Overhang Structure |
| Authors |
Hoe-Chun Kim ; Tae-Uk Jung |
| DOI |
http://dx.doi.org/10.5207/JIEIE.2012.26.7.039 |
| Keywords |
BLDC (Brushless DC) Motor ; FEA (Finite Element Analysis) ; Overhang Coefficient |
| Abstract |
This paper deals with the characteristic analysis of small power brushless DC (BLDC) motor considering the rotor magnet overhang flux. In the driving characteristics analysis using 2D FEA (Finite Element Analysis), the rotor magnet overhang effect can’t be considered and it should be neglected. To consider rotor magnet overhang effect, 3D FEA should be required. But 3D FEA requires very long calculation time even though the high specification computer is used. In this paper, the 3D electromagnetic model of BLDC motor is approximated as the 2D electromagnetic model considering overhang effect. In this paper, the concept of overhang coefficient is applied, and the coefficient according to load torque variance is deduced. |