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논문 기본 정보

자료유형
학술저널
저자정보
Dongwook Kim (Yeungnam University) Seungyoung Ahn (Korea Advanced Institute of Science and Technology)
저널정보
한국전자파학회JEES Journal of Electromagnetic Engineering And Science Journal of Electromagnetic Engineering And Science Vol.22 No.4
발행연도
2022.7
수록면
488 - 495 (8page)

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초록· 키워드

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A microrobot that could continuously receive both electrical energy and propulsion force from a wireless power transfer system would offer tremendous benefits. However, wireless powering systems produce a time-varying magnetic field that can be harmful if the generated magnetic field needed for microrobot movement is large. To limit exposure, power transfer efficiency must be enhanced. This paper derived and analyzed the magnetic force applied to a microrobot from a wireless power transfer system. Unlike previously introduced Lorentz force-based microrobot propulsion, the proposed method is independent of a wireless power transfer system’s frequency. Therefore, this frequency can be determined considering maximum power transfer efficiency. The theoretical analysis and simulation by numerical analysis were compared, and results were verified though actual fabrication and measurement. Analyses of the transmitting and receiving coils were conducted. The optimum force, with less than 9% discrepancy, was determined while achieving a 3.6% improvement in power transfer efficiency.

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Abstract
I. INTRODUCTION
II. DERIVATION OF MAGNETIC FORCE APPLIED TO MAGNETIC MATERIAL
III. POWER TRANSFER EFFICIENCY ANALYSIS BASED ON Q-FACTORS AND COUPLING COEFFICIENT
IV. DETERMINING POWERING FREQUENCY
V. EXPERIMENTAL VALIDATION
VI. CONCLUSION
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