期刊
IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS
卷 27, 期 11, 页码 959-961出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LMWC.2017.2750023
关键词
Critical coupling; impedance matching; inductive coupling; power transfer efficiency (PTE); wireless power transfer (WPT)
资金
- Electronics and Telecommunications Research Institute Grant - Korean Government through the Advanced Development of Fusion-Platform and Local Parts Maker Support Project for Context-aware Smart Vehicle [17ZD1200]
- Institute for Information & Communication Technology Planning & Evaluation (IITP), Republic of Korea [17ZD1200] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
In this letter, we compare two operating frequency tuning methods-the zero phase angle (ZPA) and the minimum reflection coefficient magnitude (MRCM) frequency tuning methods-to enhance the power transfer efficiency and output power in the wireless power transfer (WPT) system. For the MRCM frequency tuning method which has been introduced recently, the WPT system can be analyzed by considering the system as a matching network connected to a generator and a load. Through experiments, in the over-coupled region, the MRCM frequency tuning method has higher output power and efficiency than the ZPA frequency tuning method. Above all, the MRCM frequency tuning method does not need the information on the coupling coefficient as well as the primary and secondary resonators.
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