Impedance Buffer-Based Reactance Cancellation Method for CLC-S Compensated Wireless Power Transfer

Hongliang Pang, Fei Xu, Wei Liu, Chi K. Tse, K. T. Chau

Research output: Journal article publicationJournal articleAcademic researchpeer-review

2 Citations (Scopus)


Due to the inevitable variation of component parameters, interference of ferromagnetic foreign body, active regulation of operation frequency, and rectification effect caused virtual capacitance or inductance, zero-phase-angle (ZPA) operation and zero-voltage switching (ZVS) could hardly be maintained without extra control strategies, especially for high-order compensation WPT system. Accordingly, this article proposes and implements an impedance buffer-based reactance cancellation method for a capacitor-inductor-capacitor-series (<italic>CLC-S</italic>) compensated wireless power transfer system with robust ZVS. The proposed reactance cancellation method adopts a synchronous impedance buffer series connected with the <italic>CLC</italic> compensation network to realize full-range ZPA operation. It can also be regulated to ZVS switching conditions under a large tolerance of the abovementioned issues. In addition, the proposed concept holds the characteristic of communication-free, feedback-free, simple control, and no strict constraints imposed by parameters in high-order compensation. Theoretical analysis, simulated, and experimental results are given to verify the feasibility of the proposed reactance cancellation method.
Original languageEnglish
Pages (from-to)6894 - 6906
Number of pages13
JournalIEEE Transactions on Industrial Electronics
Issue number7
Publication statusPublished - 26 Sept 2023


  • Capacitance
  • Capacitors
  • High-order CLC transformation
  • Impedance
  • Inductance
  • reactance cancellation
  • Switches
  • Voltage
  • wireless power transfer (WPT)
  • Zero voltage switching
  • zero-voltage switching (ZVS)

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Electrical and Electronic Engineering


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