| Title |
Electromagnetic Design for Efficiency Improvement of a Small Vehicle Actuator BLDC Motor Considering Winding Process Simplification |
| Authors |
Sung-Min Kim ; Tae-Uk Jung |
| DOI |
http://doi.org/10.5207/JIEIE.2025.39.6.493 |
| Keywords |
Actuator; Asymmetric air-gap; BLDC motor; Coil bobbin insertion structure; Efficiency |
| Abstract |
This paper presents a design method for small BLDC motors used in vehicle actuators. To simplify the winding process and reduce manufacturing costs, a stator structure without tooth shoe was adopted, enabling coil bobbin insertion. However, this causes efficiency loss due to insufficient magnetic flux. To address this, stator tooth tip shape and asymmetric air-gap structures were selected as design variables, and an optimized model was derived using finite element analysis (FEA) and response surface methodology (RSM). The optimized model improved efficiency by 1.61% and torque by 0.37% compared to base model. Therefore, the proposed design method is suitable for small motors and other motors with complex winding processes. |