코깅 토크 저감을 위한 외전형 모터 최적설계

This paper deals with design precess about an outer rotor type surface mounted permanent magnet synchronous motor (SPMSM) used in continuous variable valve timing (CVVT) system in internal combustion engine automobiles. Outer rotor type SPMSM generate large torque and adequate at high rotation speed. For initial design, space harmonic analysis (SHA) is used. In order to minimize cogging torque, optimization was conducted through response surface methodology (RSM). In the end of paper, a finite element analysis (FEA) is performed to verify the performance of the optimum model.