상세정보
학술지
Optimal Coupling to Achieve Maximum Output Power in a WPT System
- 발행일
- 201606
- 출처
- IEEE Transactions on Power Electronics, v.31 no.6, pp.3994-3998
- ISSN
- 0885-8993
- 출판사
- IEEE
- 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.
- KSP 제안 키워드
- Coupling Coefficient, System energy efficiency, WPT System, Wireless Power Transfer Systems(WPTS's), critical coupling, maximum output power, optimal coupling