A capacitor-clamped SS compensated topology with inherent overcurrent suppression for inductive power transfer
Author(s)
Yang, Yuzhi
Wu, Jiayang
Zhou, Jiayu
Tan, Siew-Chong
Hui, Shu Yuen Ron
Type
Journal Article
Abstract
The series–series (SS) compensated topology is popular due to its simple configuration and load-independent output characteristic. However, it is susceptible to overcurrent caused by large coupling variations, output open-circuit faults, and start-up transients. To address these challenges, a capacitor-clamped SS compensation topology that requires no active control or current detection is proposed. By integrating diodes in parallel with split primary compensation capacitors, the proposed topology achieves inherent overcurrent suppression during fault conditions while maintaining the original SS system’s operational features such as load-independent constant current output under normal conditions. In addition, this topology can automatically recover to the normal state after an overcurrent incident. The working modes of the proposed topology are presented and analyzed in the time domain, followed by design procedures considering soft switching requirements. A prototype is constructed to verify the feasibility of the proposed topology. Experimental results demonstrate effective overcurrent suppression during severe misalignment, output open-circuit faults, and start-up stage.
Date Issued
2026-09-01
Date Acceptance
2026-02-26
Citation
IEEE Transactions on Industrial Electronics, 2026, 73 (9), pp.12980-12992
ISSN
0278-0046
Publisher
Institute of Electrical and Electronics Engineers (IEEE)
Start Page
12980
End Page
12992
Journal / Book Title
IEEE Transactions on Industrial Electronics
Volume
73
Issue
9
Copyright Statement
Copyright © 2026 IEEE. This is the author’s accepted manuscript made available under a CC-BY licence in accordance with Imperial’s Research Publications Open Access policy (www.imperial.ac.uk/oa-policy)
License URL
Publication Status
Published
Date Publish Online
2026-04-10