상세정보
학술지
Method for Estimating Optimum Free Resonant Frequencies in Overcoupled WPT System
- 발행일
- 201704
- 출처
- International Journal of Antennas and Propagation, v.2017, pp.1-6
- ISSN
- 1687-5869
- 출판사
- Hindawi Publishing
- 협약과제
- 16ZC3300, 상황인지 스마트카 퓨전 플랫폼 개발 및 지역 부품업체 지원사업, 박미룡
- 초록
- In our previous work, we proposed the method to maximize the output power even in the overcoupled state of the wireless power transfer (WPT) system by controlling free resonant frequencies and derived closed-form expression for optimum free resonant frequencies of the primary and secondary resonators. In this paper, we propose the mutual coupling approach to derive the optimum free resonant frequencies and show the measured power transfer efficiency (PTE) using the transmission efficiency as well as the system energy efficiency. The results of the proposed approach exactly coincide with those of the previous work, and the fabricated prototype achieves the transmission efficiency of about 80% by tuning the free resonant frequencies to the optimum values in the overcoupled state.
- KSP 제안 키워드
- Closed-form expressions, Mutual coupling, Output power, Power Transfer Efficiency, Resonant frequency(Fr), System energy efficiency, Wireless Power Transfer (WPT) system, transmission efficiency
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