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A Wireless Power Transmission System Based on Hybrid Self-switching of Coupled Inductors

Liu, Hemiao; Chen, Hao; Wang, Xing; Gorbounov, Yassen; Orabi, Mohamed; Gaafar, M.A.; Wheeler, Patrick; Rafajdus, Pavol


Hemiao Liu

Hao Chen

Xing Wang

Yassen Gorbounov

Mohamed Orabi

M.A. Gaafar

Pavol Rafajdus


This paper proposes a wireless power transfer (WPT)
system based on hybrid self-switching of coupled inductor (WPT-
HSCI) that not only realizes constant current (CC)/constant
voltage (CV) output but also effectively copes with a variety of
abnormal working conditions in the charging process by switching
on the secondary side. First, the LCC-LCC/S self-switching
composite topology is presented, and the CC/CV switching is
achieved by utilizing a coupled inductor with a center tap based
on the LCC compensation topology. The working principle of the
CC/CV topology and the parameter calculation flow are analyzed
in detail. Subsequently, the impedance, output characteristics, and
switching characteristics of the CC/CV topology are simulated and
analyzed. Additionally, the topology's stability under abnormal
working conditions, such as the missing adjacency, load short-
circuit, and load open-circuit, is analyzed. Finally, an experimental
platform is constructed with the objective of verifying the
feasibility and effectiveness of the proposed scheme. The
experimental results demonstrate that the WPT-HSCI charging
system exhibits excellent CC and CV output characteristics
without the need for additional inductor capacitance. It also
demonstrates high efficiency in output, with a maximum current
of 6.7A and a maximum voltage of 24V, which fully meets the
requirements of constant-current and constant-voltage wireless

Journal Article Type Article
Acceptance Date May 22, 2024
Deposit Date May 31, 2024
Journal IEEE Transactions on Power Electronics
Print ISSN 0885-8993
Electronic ISSN 1941-0107
Publisher Institute of Electrical and Electronics Engineers
Peer Reviewed Peer Reviewed
Public URL