| Title |
Optimization Design of Stator Notch Shape for Surface Mounted Permanent Magnet type BLDC Motor |
| Authors |
소용대(Yong-Dae So) ; 김미정(Mi-Jeong Kim) ; 김재혁(Jae-Hyeok Kim) ; 강동우(Dong-Woo Kang) |
| DOI |
https://doi.org/10.5370/KIEEP.2020.69.4.214 |
| Keywords |
Cogging torque; brushless motors; design optimization; response surface methodology; torque ripple |
| Abstract |
In the case of motors (home appliances and automobiles) frequently used near people, low vibration and low noise characteristics are important. To improve this, it is necessary to minimize cogging torque that causes vibration and noise of the motor. In this paper, we analyze the cogging torque equation to analyze the factors that affect the generation of cogging torque, and explain the correlation between the stator notch shape and the factor that reduces the cogging torque using a magnetic-equivalent circuit. In order to maximize the reduction of cogging torque according to the notch shape of the stator and minimize the deterioration of the output characteristics, the size, angle, and number of the notch shape are set as parameters. The set variable derives the optimum point of the three variables using RSM (Response of Surface Method). Each derived variable is compared with the test measurement value of cogging torque through 2-D FEM (2 Dimension Finite Element Method) results and prototype production to verify the cogging torque reduction effect of the designed notch shape. |