| Title |
Design and Analysis of an SPM Machine for EPS Applications to Reduce Torque Ripple |
| Authors |
장관희(Gwan-Hui Jang) ; 최길수(Gilsu Choi) ; 김세환(Sehwan Kim) |
| DOI |
https://doi.org/10.5370/KIEE.2024.73.7.1155 |
| Keywords |
Torque ripple; Cogging torque; Electric Power Steering; Surface-mounted permanent magnet synchronous motor; Design optimization |
| Abstract |
Minimizing the torque ripple of the electric machines used in electric power steering (EPS) systems is essential to improve the drivability of vehicles. This study introduces mathematical expressions to reduce torque ripple. It also describes an efficient design process to meet multiple design objectives and constraints. A surrogate model-based optimization algorithm with adaptive sampling is applied to perform the optimal design of a fractional-slot surface-mounted permanent magnet synchronous machine (SPMSM). The results show that the optimized design achieves significant improvements in torque density, efficiency, and cost-effectiveness while meeting both torque ripple and cogging torque constraints. |