Journal of Institute of Convergence Technology (융복합기술연구소 논문집)

Institute of Convergence Technology (한국교통대학교 융복합기술연구소)
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Magnetic Force Characteristic Analysis of Active Linear Magnetic Gear

능동 선형 자석 기어의 자기력 특성 해석

  • Sangheon Lee (Department of Mechanical & Robotics Engineering, Andong National University ) ;
  • Kwangsuk Jung (Department of Mechanical Engineering, Korea National University of Transportation )
  • 이상헌 (국립안동대학교 기계로봇공학과) ;
  • 정광석 (국립한국교통대학교 기계자동차항공공학부 기계공학전공)
  • Received : 2024.10.07
  • Accepted : 2024.11.18
  • Published : 2024.11.30
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Abstract

In order to amplify magnetic force in a linear magnetic gear, the high-speed magnet must move more than the low-speed magnet by the amplification ratio. Due to limitations in overall size, this topology has limited applications. In this study, we introduce an active magnetic gear that implements a moving magnetic field instead of the mechanical movement of the magnet by replacing the high-speed side magnet with a linear coil. In the proposed system, a harmonic modulator is added to increase the number of poles of the low-speed magnet, thereby suppressing the decrease in magnetic field strength due to size limitations of the low-speed magnet. The possibility of replacing the existing system was confirmed through harmonic magnetic analysis in the air gap, and the magnetic force change characteristics according to the added modulator variable were simulated.

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Acknowledgement

2024년 국립한국교통대학교 지원을 받아 수행하였음.

References

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