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구분 SCI
연도 ~ 키워드


학술대회 Design of a Transmitting Coil for Effective Charging Area Expansion Using a Stepped Helical Coil
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김상원, 문정익, 김성민, 조인귀, 손수호
International Conference on Information and Communication Technology Convergence (ICTC) 2018, pp.1528-1530
18HR3600, [전문연구실] 전파 모니터링 전문연구실, 손수호
In this paper, a novel stepped helical coil is proposed with uniform magnetic field generation for effective wireless charging region expansion. The stepped helical coil uses two or more helical coils, and the desired magnetic field can be formed by controlling the number of turns and the diameter of each coil. In addition, this structure is insensitive to the influence of the ground plane and is easy to manufacture due to its simple architecture. The proposed stepped helical coil was tested for its performance by constructing a magnetic resonance 100 W class wireless charging system at a frequency of 140 kHz. The measurement results show that the charging area of 380.1 cm 2 (71.6%), which maintains 60% efficiency, is about 4 times larger than that of the conventional single helical coil structure.
KSP 제안 키워드
Helical coils, Magnetic field(MF), Magnetic resonance(MR), Number of turns, Uniform magnetic field, Wireless Charging System, charging area, ground planes(GP), measurement results, transmitting coil