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논문 기본 정보

자료유형
학술저널
저자정보
Lee, Gunbok (Department of Electrical Engineering, Graduate School of Engineering Mastership, Pohang University of Science and Technology) Park, Wee Sang (Department of Electrical Engineering, Graduate School of Engineering Mastership, Pohang University of Science and Technology)
저널정보
한국인터넷방송통신학회 Journal of advanced smart convergence Journal of advanced smart convergence 제1권 제2호
발행연도
2012.1
수록면
16 - 19 (4page)

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A modified 4-coil magnetic resonance wireless power transfer (MRWPT) system is proposed. Four coils based on 2-coil system with additional two matching coils were used in this topology. When Tx-Rx distance is changed, the input impedance is changed. However, it can be adjusted by coil parameters of matching coils to maintain impedance matching for maximum efficiency. The equivalent circuit of MRWPT system was analyzed for both transmission function and optimum coupling coefficient of the matching coils. By using four spiral resonant coils, these design considerations was experimentally verified. The measured data agreed well with the calculated data and the transmission function of the proposed system was more efficient than that of conventional 2-coil system.

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