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학술지 Optimal Coupling to Achieve Maximum Output Power in a WPT System
Cited 83 time in scopus Download 2 time Share share facebook twitter linkedin kakaostory
저자
서동욱, 이재호, 이형수
발행일
201606
출처
IEEE Transactions on Power Electronics, v.31 no.6, pp.3994-3998
ISSN
0885-8993
출판사
IEEE
DOI
https://dx.doi.org/10.1109/TPEL.2015.2504625
협약과제
15MC2500, 만성질환 관리를 위한 인체삽입형 생리기능 자동감시 시스템 기술 개발, 이형수
초록
In the wireless power transfer systems, a coupling coefficient is one of the measures of performance. In particular, the coupling coefficient at critical coupling does not ensure maximum system energy efficiency but guarantee maximum output power to the load. As the coupling coefficient goes beyond the critical-coupled state, output power begins to decline. In this letter, we propose a method to maximize output power even in an overcoupled state as in the critical-coupled state by adjusting the capacitance of the resonator. Our proposal is verified by comparing the calculations and simulations with measurements, and they are in good agreement.
키워드
Contactless power, critical coupling, inductive power transfer, system energy efficiency, wireless power
KSP 제안 키워드
Coupling Coefficient, System energy efficiency, WPT System, Wireless Power Transfer Systems(WPTS's), critical coupling, inductive power transfer, maximum output power, optimal coupling