상세정보
학술지
Circuit Model Based Analysis of a Wireless Energy Transfer System Via Coupled Magnetic Resonances
- 발행일
- 201012
- 출처
- IEEE Transactions on Industrial Electronics, v.58 no.7, pp.2906-2914
- ISSN
- 0278-0046
- 출판사
- IEEE
- 협약과제
- 10ZE1100, ETRI 연구역량 강화를 위한 R&D체계 구축 및 Seed형 기술개발을 위한 창의형 연구 사업, 현창희
- 초록
- A simple equivalent-circuit model is developed for a wireless energy-transfer system via coupled magnetic resonances, and a practical design method is also provided. Node equations for the resonance system are built with the method, expanding on the equations for a transformer, and the optimum distances of the coils in the system are derived analytically for optimum coupling coefficients for high transfer efficiency. In order to calculate the frequency characteristics for a lossy system, the equivalent model is established at an electric-design automation tool. The model parameters of the actual system are extracted, and the modeling results are compared with measurements. Through the developed model, it is seen that the system can transfer power over a midrange of a few meters and that impedance matching is important to achieve high efficiency. © 2006 IEEE.
- KSP 제안 키워드
- Coupled magnetic resonances, Coupling Coefficient, Design method, Energy transfer system, Equivalent model, Frequency characteristics, Magnetic resonance(MR), Model parameter, Model-based analysis, Practical design, Transfer efficiency