| Title |
Optimal Design for Reducing Cogging Torque Using Auxiliary Poles of Permanent Magnet Synchronous Motors for Vehicle Actuator |
| Authors |
박광우(Kwang-Woo Park) ; 정태욱(Tae-Uk Jung) |
| DOI |
https://doi.org/10.5370/KIEE.2025.74.3.440 |
| Keywords |
Permanent magnet synchronous motor; cogging torque; auxiliary pole; SPMSM; Optimal design |
| Abstract |
SPMSM is used as an actuator that drives each system of automobiles according to the trend of automobile electrical equipment.
When designing an automobile, it is required to reduce the vibration and noise of the SPMSM according to the miniaturization of an actuator and the need for motor control and quietness to reduce fuel efficiency. Cogging torque has a great influence on the noise and vibration generation of the motor, so it should be reduced as much as possible during design. Several studies have been conducted to reduce the cogging torque of SPMSM, but a comparative analysis of a method of minimizing cogging torque by designing a stator shape having an auxiliary pole is not widely known. Therefore, in this paper, a method that can effectively reduce the cogging torque of SPMSM using auxiliary poles was designed through finite element analysis, electrical characteristics were analyzed through finite element analysis for basic models without auxiliary poles and models with auxiliary poles. For the optimal design of motors with auxiliary poles, the main design factors of stators and rotors were derived to obtain the optimal design shape that meets the design goals using the reaction surface method. |