2-8 2026 [춘계학술대회]
| 제목 | 브레이크용 모터의 코깅 토크 저감을 위한 회전자 개선 설계 연구 |
|---|---|
| 분야 | 모빌리티 동력 및 구동시스템 |
| 언어 | Korean |
| 저자 | 박승우(Mandobrose) |
| Key Words | SPM(표면부착형 전동기), Cogging Torque(코깅 토크), Overhang Structure(오버행 구조), NVH(소음 진동), Demagnetization(감자현상). |
| 초록 |
Cogging torque is one of the primary sources of vibration and noise in permanent magnet motors. In particular, for brake motors, it directly degrades control responsiveness and position control precision, ultimately deteriorating overall system performance. Meanwhile, the demand for miniaturization and higher power output of motors continues to grow in response to increasing performance requirements across industries. However, surface permanent magnet motors are subject to structural and mechanical constraints due to the adoption of a can structure designed to prevent the scattering of permanent magnets attached to the rotor surface, which places inherent limitations on further miniaturization. Reducing the air gap length is a potential approach to improving output performance; however, a trade-off exists in which a shorter air gap increases the variation in magnetic energy with respect to rotor position, thereby worsening cogging torque characteristics. Therefore, a design that simultaneously satisfies both output performance and cogging torque requirements is needed. In this study, an overhang structure that maximizes the utilization of air gap flux within a constrained outer dimension is applied to a brake SPM motor. The proposed structure, aimed at simultaneously achieving output enhancement and cogging torque reduction, is investigated through finite element analysis and prototype fabrication. |
| 원문(PDF) | 다운로드 |