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초록
This research investigates the characteristics of the cogging torque in brush less DC motors due to the interaction between unevenly magnetized permanent magnet (PM) and teeth shape. The excitation frequencies of cogging torque are the harmonics of the least common multiple of the poles and slots in the brush less DC moton with the ideally magnetized PM. However, uneven magnetization of PM additionally generates the harmonics of slot number whose magnitudes are affected not only by the uneven magnetization of PM but also by the teeth shape. Effective reduction of cogging torque can be accomplished by investigating the interaction between unevenly magnetized PM and teeth shape.
키워드
Brushless DC motor; Cogging torque; Teeth chamfering; Uneven magnetization; Cogging torque; Excitation frequency; Least common multiple; Slot numbers; Teeth chamfering; Uneven magnetization; Brushes; DC motors; Magnetic devices; Magnetic recording; Magnetization; Permanent magnets; Torque; Brushless DC motors
- 제목
- Cogging torque of brushless DC motors due to the interaction between unevenly magnetized permanent magnet and teeth chamfering
- 저자
- Sung, S.J.; Park, S.J.; Jang, G.H.
- 발행일
- 2010-11
- 유형
- Conference Paper
- 저널명
- Digest of the Asia-Pacific Magnetic Recording Conference 2010, APMRC 2010