Class E/EF Inductive Power Transfer to Achieve Stable Output under Variable Low Coupling

doi:10.1109/APEC48143.2025.10977139

	Class E/EF Inductive Power Transfer to Achieve Stable Output under Variable Low Coupling
	Yifan Zhao 1; Mowei Lu 1; Heyuan Li2 ; Zhenbin Zhang 3; Minfan Fu2 ; Stefan M. Goetz 1
	2025-03-20
会议录名称	2025 IEEE APPLIED POWER ELECTRONICS CONFERENCE AND EXPOSITION (APEC)
ISSN	1048-2334
页码	3206-3211
发表状态	已发表
DOI	10.1109/APEC48143.2025.10977139
摘要	This paper develops an inductive power transfer (IPT) system with stable output power based on a Class E/EF inverter. Load-independent design of Class E/EF inverter has recently attracted widespread interest. However, applying this design to IPT systems has proven challenging when the coupling coefficient is weak. To solve this issue, this paper uses an expanded impedance model and substitutes the secondary side’s perfect resonance with a detuned design. Therefore, the system can maintain stable output even under a low coupling coefficient. A 400 kHz experimental prototype validates these findings. The experimental results indicate that the output power fluctuation remains within 15% as the coupling coefficient varies from 0.04 to 0.07. The peak power efficiency achieving 91%.
会议录编者/会议主办者	IEEE Industry Applications Society (IAS) ; IEEE Power Electronics Society (PELS) ; Power Sources Manufacturers Association (PSMA)
关键词	Class E Class E/EF inverter Coupling coefficient Extended impedance method Impedance method Inductive power transfer systems Inductive powertransfer (IPT) Low coupling Output power Stable output
会议名称	14th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2025
会议地点	Atlanta, GA, USA
会议日期	16-20 March 2025
URL	查看原文
收录类别	EI
语种	英语
出版者	Institute of Electrical and Electronics Engineers Inc.
EI入藏号	20252018417771
EISSN	2470-6647
原始文献类型	Conference article (CA)
来源库	IEEE
文献类型	会议论文
条目标识符	https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/523879
专题	信息科学与技术学院信息科学与技术学院_PI研究组_傅旻帆组信息科学与技术学院_博士生
作者单位	1.Department of Engineering, University of Cambridge, Cambridge, United Kingdom 2.School of Information Science and Technology, ShanghaiTech University, Shanghai, China 3.School of Electrical Engineering, Shandong University, Jinan, China
推荐引用方式 GB/T 7714	Yifan Zhao,Mowei Lu,Heyuan Li,et al. Class E/EF Inductive Power Transfer to Achieve Stable Output under Variable Low Coupling[C]//IEEE Industry Applications Society (IAS), IEEE Power Electronics Society (PELS), Power Sources Manufacturers Association (PSMA):Institute of Electrical and Electronics Engineers Inc.,2025:3206-3211.